{"id":657,"date":"2026-02-15T19:22:20","date_gmt":"2026-02-15T19:22:20","guid":{"rendered":"https:\/\/gxmicrosilica.com\/?page_id=657"},"modified":"2026-02-21T20:41:20","modified_gmt":"2026-02-21T20:41:20","slug":"microsilica","status":"publish","type":"page","link":"https:\/\/gxmicrosilica.com\/index.php\/microsilica\/","title":{"rendered":"Microsilica"},"content":{"rendered":"\t\t
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Our Products<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Microsilica<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Also known as silica fume<\/strong>, is a fine powder consisting of amorphous silicon dioxide (SiO2) that is a by-product of silicon and ferrosilicon alloy production. It is widely used as a mineral admixture in concrete, where its sub-micron, spherical particles fill voids, enhance packing density, and react with calcium hydroxide to form additional calcium silicate hydrate (CSH) phases. This pozzolanic reaction significantly increases concrete’s strength, durability, and resistance to chemical attack.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Composition and Function in Concrete:<\/h2><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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\n Composition: <\/h3>\n \t\t \t

● Primary Constituent:<\/b> Silicon Dioxide (SiO2).
\n●; Content:;<\/b> Typically ranges from 85% to 98% by mass.
\n● ;Physical Characteristics:;<\/b> The particles are spherical 6and\nextremely fine, with an average diameter of about 0.15\nmicrometers (150 nm), making them about 100 times smaller\nthan average cement particles. This gives it a very high specific\nsurface area, which contributes to its high reactivity.<\/p>\n

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\n Function: <\/h3>\n \t\t \t

\nMicrosilica improves concrete performance through two main\nmechanisms:<\/b>
\n● Pozzolanic Reaction: As a powerful pozzolanic material,\nMicrosilica reacts chemically with calcium hydroxide, a by-\nproduct of cement hydration.\nThis reaction forms additional Calcium Silicate Hydrate (C-S-H)\ngel, significantly enhancing the concrete's strength and density.
\n● Filler Effect (Micro-Filler): Due to its microscopic size, Microsilica\nfills tiny voids between cement particles and the aggregate\ninterface, resulting in a denser, more compact, and less porous\ncement paste. This action also improves the bond by eliminating\nthe weak Interfacial Transition Zone (ITZ).<\/p>\n

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Applications and Benefits<\/span> <\/h2>

\n\t\t\t\t\t\tMicrosilica is critical for producing High-Performance Concrete (HPC), and has various industrial uses.\n\t\t\t\t\t<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\n\t\t\t\t\tConstruction & Cementitious Materials\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\n\t\t\t\t\tSpecialized Industrial Uses\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Construction & Cementitious Materials Application & Benefits:<\/h2>\t\t\t\t
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\u25cf High-Performance Concrete (HPC): Very low permeability to water and chloride intrusion 18, extremely high electrical resistivity (mitigating corrosion), and superior resistance to chemical attack.
\u25cf High-Strength Concrete: Achieves compressive strengths up to 20,000 psi (140 MPa), high modulus of elasticity, and high early strengths for fast-track construction.
\u25cf Shotcrete: Reduces rebound loss, increases bonding strength, and realizes material cost savings.
\u25cf Cementitious Repair: Used as a component in pre-packaged bagged products for concrete, mortar, or grout repair.
\u25cf Wallboard: Used in commercial gypsum and concrete wallboard products for increased performance and durability.<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"Gemini_Generated_Image_cuzp0gcuzp0gcuzp\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Specialized Industrial Uses: Application & Benefits:<\/h2>\t\t\t\t
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\u25cf Oil & Gas Well Grouting:<\/strong> Improves flow characteristics, dramatically decreases permeability (controlling gas migration), and contributes to lightweight grout systems.
\u25cf Refractory & Ceramics:<\/strong> Improves particle packing, enhances strength at high temperatures, and reduces permeability to avoid penetration by gas, slag, and metal.
\u25cf Fiber Cement:<\/strong> Increases bonding strength, decreases permeability to water intrusion, and increases compressive strength.
\u25cf Elastomers\/Polymers:<\/strong> Used as a highly effective reinforcing filler in rubber or plastic.
\u25cf Agriculture:<\/strong> Used in the defluorination process for dicalcium phosphate production (used in animal feed).<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\"4\"<\/figure><\/div>
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Packing<\/h2><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t
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\u25cf Densified & packed in jumbo bags each of 1000 \u2013 1500 kg.<\/p>\n

\u25cf Bulk in silo trucks.<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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```html\n\n\n\n \n \n Test Results (ASTM C 1240)<\/title>\n\n <style>\n table{\n width:100%;\n border-collapse:collapse;\n }\n\n th,td{\n padding:8px;\n border:1px solid #d0d0d0; \/* light grey borders *\/\n text-align:left;\n vertical-align:top;\n }\n\n \/* Desktop zebra rows *\/\n tbody tr:nth-child(odd){ background:#f2f2f2; } \/* light grey *\/\n tbody tr:nth-child(even){ background:#ffffff; } \/* white *\/\n\n \/* Mobile Responsive *\/\n @media (max-width:768px){\n table,thead,tbody,th,td,tr{\n display:block;\n width:100%;\n }\n\n thead{ display:none; }\n\n tr{\n margin-bottom:15px;\n border:1px solid #d0d0d0; \/* light grey border *\/\n padding:8px;\n }\n\n td{\n border:none;\n border-bottom:1px solid #d0d0d0; \/* light grey *\/\n padding:6px 0;\n }\n\n td:last-child{ border-bottom:none; }\n\n td::before{\n font-weight:bold;\n display:block;\n margin-bottom:3px;\n }\n\n td:nth-of-type(1)::before{ content:\"Items\"; }\n td:nth-of-type(2)::before{ content:\"Unit\"; }\n td:nth-of-type(3)::before{ content:\"Test Results\"; }\n td:nth-of-type(4)::before{ content:\"Explain\"; }\n }\n <\/style>\n<\/head>\n\n<body>\n\n<h2>Test Results<\/h2>\n\n<table>\n <thead>\n <tr>\n <th>Items<\/th>\n <th>Unit<\/th>\n <th>Test Results<\/th>\n <th>Explain<\/th>\n <\/tr>\n <\/thead>\n\n <tbody>\n <tr>\n <td>SiO2<\/td>\n <td>%<\/td>\n <td>98.34<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>H2O (Moisture)<\/td>\n <td>%<\/td>\n <td>0.30<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>Loss on Ignition (L.O.I)<\/td>\n <td>%<\/td>\n <td>0.50<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>Accelerated Pozzolanic Strength Activity Index (7 days)<\/td>\n <td>%<\/td>\n <td>125<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>Specific Surface Area<\/td>\n <td>m2\/g<\/td>\n <td>2.2<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>Percent Retained On 45\u03bcm<\/td>\n <td>%<\/td>\n <td>3<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>Bulk Density<\/td>\n <td>kg\/m3<\/td>\n <td>320<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>PH Value<\/td>\n <td><\/td>\n <td>8.2<\/td>\n <td>ASTM 1240-15<\/td>\n <\/tr>\n <tr>\n <td>Conclusion<\/td>\n <td><\/td>\n <td colspan=\"2\">Complies with the requirements of ASTM C 1240 standard<\/td>\n <\/tr>\n <\/tbody>\n<\/table>\n\n<\/body>\n<\/html>\n```\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7dc8c3a0 elementor-widget elementor-widget-text-editor\" data-id=\"7dc8c3a0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"spec-wrap\"><h2 class=\"spec-title\">1- COA SSF-97U \/ Standard: ASTM C 1240<\/h2><h3>\u00a0<\/h3><h3 class=\"spec-title\">Chemical Component<\/h3><div class=\"table-wrap\"><table class=\"spec-table wide\"><thead><tr><th>Items<\/th><th>Unit<\/th><th>Test Results<\/th><th>Explain<\/th><\/tr><\/thead><tbody><tr><td>SiO\u2082<\/td><td>%<\/td><td>98.34<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>H\u2082O (Moisture)<\/td><td>%<\/td><td>0.30<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Loss on Ignition (L.O.I)<\/td><td>%<\/td><td>0.50<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Accelerated Pozzolanic Strength Activity Index (7 days)<\/td><td>%<\/td><td>125<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Specific Surface Area<\/td><td>m\u00b2\/g<\/td><td>2.2<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Percent Retained On 45\u03bcm<\/td><td>%<\/td><td>3<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Bulk Density<\/td><td>kg\/m\u00b3<\/td><td>320<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>PH Value<\/td><td>–<\/td><td>8.2<\/td><td>ASTM 1240-15<\/td><\/tr><\/tbody><\/table><\/div><div class=\"conclusion\"><strong>Conclusion:<\/strong><br \/>Complies with the requirements of ASTM C 1240 standard.<\/div><\/div><p><style>\n .spec-wrap{<br \/> font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;<br \/> }<br \/> .spec-title{<br \/> margin: 14px 0 10px;<br \/> font-size: 18px;<br \/> font-weight: 800;<br \/> }<br \/> .conclusion{<br \/> margin-top: 10px;<br \/> padding: 12px 14px;<br \/> border: 1px solid #ddd;<br \/> background: #fff;<br \/> border-radius: 8px;<br \/> font-size: 14px;<br \/> line-height: 1.4;<br \/> }<\/p>\n<p> \/* Wrapper: keeps wide table usable on smaller screens via horizontal scroll *\/<br \/> .table-wrap{<br \/> width:100%;<br \/> overflow-x:auto;<br \/> -webkit-overflow-scrolling: touch;<br \/> }<\/p>\n<p> .spec-table{<br \/> width:100%;<br \/> border-collapse:collapse;<br \/> font-size:14px;<br \/> }<\/p>\n<p> \/* Wide-screen feel *\/<br \/> .spec-table.wide{<br \/> min-width: 900px;<br \/> }<\/p>\n<p> .spec-table th, .spec-table td{<br \/> border:1px solid #ddd;<br \/> padding:10px 12px;<br \/> vertical-align:top;<br \/> }<\/p>\n<p> .spec-table thead th{<br \/> font-weight:800;<br \/> text-align:left;<br \/> white-space:nowrap;<br \/> }<\/p>\n<p> \/* Zebra striping *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> \/* Optional column sizing *\/<br \/> .spec-table td:nth-child(1), .spec-table th:nth-child(1){ width:40%; }<br \/> .spec-table td:nth-child(2), .spec-table th:nth-child(2){ width:12%; }<br \/> .spec-table td:nth-child(3), .spec-table th:nth-child(3){ width:18%; }<br \/> .spec-table td:nth-child(4), .spec-table th:nth-child(4){ width:30%; }<\/p>\n<p> \/* Mobile responsive stacked rows *\/<br \/> @media (max-width: 680px){<br \/> .spec-table.wide{ min-width: 0; }<br \/> .spec-table thead{ display:none; }<\/p>\n<p> .spec-table, .spec-table tbody, .spec-table tr, .spec-table td{<br \/> display:block;<br \/> width:100%;<br \/> }<\/p>\n<p> .spec-table tr{<br \/> border:1px solid #ddd;<br \/> margin-bottom:12px;<br \/> }<\/p>\n<p> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> .spec-table td{<br \/> border:none;<br \/> border-bottom:1px solid #eee;<br \/> position:relative;<br \/> padding:10px 12px 10px 48%;<br \/> box-sizing:border-box;<br \/> }<br \/> .spec-table td:last-child{ border-bottom:none; }<\/p>\n<p> .spec-table td::before{<br \/> position:absolute;<br \/> left:12px;<br \/> top:10px;<br \/> width:42%;<br \/> white-space:nowrap;<br \/> font-weight:800;<br \/> content:\"\";<br \/> }<\/p>\n<p> .spec-table td:nth-of-type(1)::before{ content:\"Items\"; }<br \/> .spec-table td:nth-of-type(2)::before{ content:\"Unit\"; }<br \/> .spec-table td:nth-of-type(3)::before{ content:\"Test Results\"; }<br \/> .spec-table td:nth-of-type(4)::before{ content:\"Explain\"; }<br \/> }<br \/><\/style><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d7730b3 elementor-widget elementor-widget-text-editor\" data-id=\"6d7730b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"spec-wrap\"><h2 class=\"spec-title\">2- Grade: 92D<\/h2><h3>\u00a0<\/h3><h3 class=\"spec-title\">Chemical Component<\/h3><div class=\"table-wrap\"><table class=\"spec-table wide\"><thead><tr><th>Item<\/th><th>Unit<\/th><th>Specification<\/th><th>Typical Value<\/th><\/tr><\/thead><tbody><tr><td>SiO\u2082<\/td><td>%<\/td><td>92 min<\/td><td>93.6<\/td><\/tr><tr><td>Cl<\/td><td>%<\/td><td>0.1 max<\/td><td>0.010<\/td><\/tr><tr><td>Al\u2082O\u2083<\/td><td>%<\/td><td>1.0 max<\/td><td>0.41<\/td><\/tr><tr><td>Fe\u2082O\u2083<\/td><td>%<\/td><td>1.0 max<\/td><td>0.32<\/td><\/tr><tr><td>K\u2082O<\/td><td>%<\/td><td>1.0 max<\/td><td>0.68<\/td><\/tr><tr><td>MgO<\/td><td>%<\/td><td>1.0 max<\/td><td>0.41<\/td><\/tr><tr><td>C<\/td><td>%<\/td><td>3.0 max<\/td><td>1.86<\/td><\/tr><tr><td>H\u2082O<\/td><td>%<\/td><td>3.0 max<\/td><td>0.96<\/td><\/tr><\/tbody><\/table><\/div><h3 class=\"spec-title\">Physical Data<\/h3><div class=\"table-wrap\"><table class=\"spec-table wide\"><thead><tr><th>Item<\/th><th>Unit<\/th><th>Specification<\/th><th>Typical Value<\/th><\/tr><\/thead><tbody><tr><td>Loss on Ignition<\/td><td>%<\/td><td>6 max<\/td><td>2.4<\/td><\/tr><tr><td>Coarse particles > 45\u00b5m<\/td><td>%<\/td><td>10.0 max<\/td><td>2.8<\/td><\/tr><tr><td>PH- Value<\/td><td>–<\/td><td>6\u20138<\/td><td>7<\/td><\/tr><tr><td>Bulk Density<\/td><td>kg\/m\u00b3<\/td><td>500\u2013700<\/td><td>680<\/td><\/tr><\/tbody><\/table><\/div><\/div><p><style>\n .spec-wrap{<br \/> font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;<br \/> }<br \/> .spec-title{<br \/> margin: 14px 0 10px;<br \/> font-size: 18px;<br \/> font-weight: 800;<br \/> }<\/p>\n<p> \/* Wrapper: keeps wide table usable on smaller screens via horizontal scroll *\/<br \/> .table-wrap{<br \/> width:100%;<br \/> overflow-x:auto;<br \/> -webkit-overflow-scrolling: touch;<br \/> }<\/p>\n<p> .spec-table{<br \/> width:100%;<br \/> border-collapse:collapse;<br \/> font-size:14px;<br \/> }<\/p>\n<p> \/* Wide-screen feel *\/<br \/> .spec-table.wide{<br \/> min-width: 900px;<br \/> }<\/p>\n<p> .spec-table th, .spec-table td{<br \/> border:1px solid #ddd;<br \/> padding:10px 12px;<br \/> vertical-align:top;<br \/> }<\/p>\n<p> .spec-table thead th{<br \/> font-weight:800;<br \/> text-align:left;<br \/> white-space:nowrap;<br \/> }<\/p>\n<p> \/* Zebra striping *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> \/* Optional column sizing *\/<br \/> .spec-table td:nth-child(1), .spec-table th:nth-child(1){ width:32%; }<br \/> .spec-table td:nth-child(2), .spec-table th:nth-child(2){ width:12%; }<br \/> .spec-table td:nth-child(3), .spec-table th:nth-child(3){ width:28%; }<br \/> .spec-table td:nth-child(4), .spec-table th:nth-child(4){ width:28%; }<\/p>\n<p> \/* Mobile responsive stacked rows *\/<br \/> @media (max-width: 680px){<br \/> .spec-table.wide{ min-width: 0; }<br \/> .spec-table thead{ display:none; }<\/p>\n<p> .spec-table, .spec-table tbody, .spec-table tr, .spec-table td{<br \/> display:block;<br \/> width:100%;<br \/> }<\/p>\n<p> .spec-table tr{<br \/> border:1px solid #ddd;<br \/> margin-bottom:12px;<br \/> }<\/p>\n<p> \/* keep zebra on \u201ccards\u201d *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> .spec-table td{<br \/> border:none;<br \/> border-bottom:1px solid #eee;<br \/> position:relative;<br \/> padding:10px 12px 10px 48%;<br \/> box-sizing:border-box;<br \/> }<br \/> .spec-table td:last-child{ border-bottom:none; }<\/p>\n<p> .spec-table td::before{<br \/> position:absolute;<br \/> left:12px;<br \/> top:10px;<br \/> width:42%;<br \/> white-space:nowrap;<br \/> font-weight:800;<br \/> content:\"\";<br \/> }<\/p>\n<p> .spec-table td:nth-of-type(1)::before{ content:\"Item\"; }<br \/> .spec-table td:nth-of-type(2)::before{ content:\"Unit\"; }<br \/> .spec-table td:nth-of-type(3)::before{ content:\"Specification\"; }<br \/> .spec-table td:nth-of-type(4)::before{ content:\"Typical Value\"; }<br \/> }<br \/><\/style><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-745e0768 elementor-widget elementor-widget-text-editor\" data-id=\"745e0768\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"spec-wrap\"><h2 class=\"spec-title\">3- COA SSF-95U \/ Standard: ASTM C 1240<\/h2><h3>\u00a0<\/h3><h3 class=\"spec-title\">Chemical Component<\/h3><div class=\"table-wrap\"><table class=\"spec-table wide\"><thead><tr><th>Items<\/th><th>Unit<\/th><th>Test Results<\/th><th>Explain<\/th><\/tr><\/thead><tbody><tr><td>SiO\u2082<\/td><td>%<\/td><td>96.65<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>H\u2082O (Moisture)<\/td><td>%<\/td><td>0.20<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Loss on Ignition (L.O.I)<\/td><td>%<\/td><td>0.97<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Fe\u2082O\u2083<\/td><td>%<\/td><td>0.058<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>CaO<\/td><td>%<\/td><td>0.72<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>MgO<\/td><td>%<\/td><td>0.35<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>K\u2082O<\/td><td>%<\/td><td>0.38<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>Na\u2082O<\/td><td>%<\/td><td>0.33<\/td><td>ASTM 1240-15<\/td><\/tr><tr><td>TiO\u2082<\/td><td>%<\/td><td>0.008<\/td><td>ASTM 1240-15<\/td><\/tr><\/tbody><\/table><\/div><div class=\"conclusion\"><strong>Conclusion:<\/strong><br \/>Complies with the requirements of ASTM C 1240 standard.<\/div><\/div><p><style>\n .spec-wrap{<br \/> font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;<br \/> }<br \/> .spec-title{<br \/> margin: 14px 0 10px;<br \/> font-size: 18px;<br \/> font-weight: 800;<br \/> }<br \/> .conclusion{<br \/> margin-top: 10px;<br \/> padding: 12px 14px;<br \/> border: 1px solid #ddd;<br \/> background: #fff;<br \/> border-radius: 8px;<br \/> font-size: 14px;<br \/> line-height: 1.4;<br \/> }<\/p>\n<p> \/* Wrapper: keeps wide table usable on smaller screens via horizontal scroll *\/<br \/> .table-wrap{<br \/> width:100%;<br \/> overflow-x:auto;<br \/> -webkit-overflow-scrolling: touch;<br \/> }<\/p>\n<p> .spec-table{<br \/> width:100%;<br \/> border-collapse:collapse;<br \/> font-size:14px;<br \/> }<\/p>\n<p> \/* Wide-screen feel *\/<br \/> .spec-table.wide{<br \/> min-width: 900px;<br \/> }<\/p>\n<p> .spec-table th, .spec-table td{<br \/> border:1px solid #ddd;<br \/> padding:10px 12px;<br \/> vertical-align:top;<br \/> }<\/p>\n<p> .spec-table thead th{<br \/> font-weight:800;<br \/> text-align:left;<br \/> white-space:nowrap;<br \/> }<\/p>\n<p> \/* Zebra striping *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> \/* Optional column sizing *\/<br \/> .spec-table td:nth-child(1), .spec-table th:nth-child(1){ width:34%; }<br \/> .spec-table td:nth-child(2), .spec-table th:nth-child(2){ width:12%; }<br \/> .spec-table td:nth-child(3), .spec-table th:nth-child(3){ width:18%; }<br \/> .spec-table td:nth-child(4), .spec-table th:nth-child(4){ width:36%; }<\/p>\n<p> \/* Mobile responsive stacked rows *\/<br \/> @media (max-width: 680px){<br \/> .spec-table.wide{ min-width: 0; }<br \/> .spec-table thead{ display:none; }<\/p>\n<p> .spec-table, .spec-table tbody, .spec-table tr, .spec-table td{<br \/> display:block;<br \/> width:100%;<br \/> }<\/p>\n<p> .spec-table tr{<br \/> border:1px solid #ddd;<br \/> margin-bottom:12px;<br \/> }<\/p>\n<p> \/* keep zebra on \u201ccards\u201d *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> .spec-table td{<br \/> border:none;<br \/> border-bottom:1px solid #eee;<br \/> position:relative;<br \/> padding:10px 12px 10px 48%;<br \/> box-sizing:border-box;<br \/> }<br \/> .spec-table td:last-child{ border-bottom:none; }<\/p>\n<p> .spec-table td::before{<br \/> position:absolute;<br \/> left:12px;<br \/> top:10px;<br \/> width:42%;<br \/> white-space:nowrap;<br \/> font-weight:800;<br \/> content:\"\";<br \/> }<\/p>\n<p> .spec-table td:nth-of-type(1)::before{ content:\"Items\"; }<br \/> .spec-table td:nth-of-type(2)::before{ content:\"Unit\"; }<br \/> .spec-table td:nth-of-type(3)::before{ content:\"Test Results\"; }<br \/> .spec-table td:nth-of-type(4)::before{ content:\"Explain\"; }<br \/> }<br \/><\/style><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-500b14be elementor-widget elementor-widget-text-editor\" data-id=\"500b14be\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"spec-wrap\"><h2>4- Silica Fume Grade 85<\/h2><h3>\u00a0<\/h3><h3 class=\"spec-title\">Chemical Component<\/h3><div class=\"table-wrap\"><table class=\"spec-table wide\"><thead><tr><th>Item<\/th><th>Unit<\/th><th>Specification<\/th><th>Typical Value<\/th><\/tr><\/thead><tbody><tr><td>SiO\u2082<\/td><td>%<\/td><td>85 min<\/td><td>88.6<\/td><\/tr><tr><td>Chrome<\/td><td>%<\/td><td>1.0 max<\/td><td>0.21<\/td><\/tr><tr><td>Al\u2082O\u2083<\/td><td>%<\/td><td>1.0 max<\/td><td>0.53<\/td><\/tr><tr><td>Fe\u2082O\u2083<\/td><td>%<\/td><td>1.0 max<\/td><td>0.35<\/td><\/tr><tr><td>K\u2082O<\/td><td>%<\/td><td>1.0 max<\/td><td>0.81<\/td><\/tr><tr><td>MgO<\/td><td>%<\/td><td>1.0 max<\/td><td>0.43<\/td><\/tr><tr><td>C<\/td><td>%<\/td><td>3.0 max<\/td><td>1.8<\/td><\/tr><tr><td>H\u2082O<\/td><td>%<\/td><td>3.0 max<\/td><td>0.93<\/td><\/tr><\/tbody><\/table><\/div><h3 class=\"spec-title\">Physical Data<\/h3><div class=\"table-wrap\"><table class=\"spec-table wide\"><thead><tr><th>Item<\/th><th>Unit<\/th><th>Specification<\/th><th>Typical Value<\/th><\/tr><\/thead><tbody><tr><td>Loss on Ignition<\/td><td>%<\/td><td>6 max<\/td><td>2.3<\/td><\/tr><tr><td>Coarse particles > 45\u00b5m<\/td><td>%<\/td><td>10.0 max<\/td><td>2.5<\/td><\/tr><tr><td>PH- Value<\/td><td>–<\/td><td>6\u20138<\/td><td>7<\/td><\/tr><tr><td>Bulk Density<\/td><td>kg\/m\u00b3<\/td><td>500\u2013700<\/td><td>680<\/td><\/tr><\/tbody><\/table><\/div><\/div><p><style>\n .spec-wrap{<br \/> font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;<br \/> }<br \/> .spec-title{<br \/> margin: 14px 0 10px;<br \/> font-size: 18px;<br \/> font-weight: 800;<br \/> }<\/p>\n<p> \/* Wrapper: keeps wide table usable on smaller screens via horizontal scroll *\/<br \/> .table-wrap{<br \/> width:100%;<br \/> overflow-x:auto;<br \/> -webkit-overflow-scrolling: touch;<br \/> }<\/p>\n<p> .spec-table{<br \/> width:100%;<br \/> border-collapse:collapse;<br \/> font-size:14px;<br \/> }<\/p>\n<p> \/* Wide-screen feel *\/<br \/> .spec-table.wide{<br \/> min-width: 900px;<br \/> }<\/p>\n<p> .spec-table th, .spec-table td{<br \/> border:1px solid #ddd;<br \/> padding:10px 12px;<br \/> vertical-align:top;<br \/> }<\/p>\n<p> .spec-table thead th{<br \/> font-weight:800;<br \/> text-align:left;<br \/> white-space:nowrap;<br \/> }<\/p>\n<p> \/* Zebra striping *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> \/* Optional column sizing *\/<br \/> .spec-table td:nth-child(1), .spec-table th:nth-child(1){ width:32%; }<br \/> .spec-table td:nth-child(2), .spec-table th:nth-child(2){ width:12%; }<br \/> .spec-table td:nth-child(3), .spec-table th:nth-child(3){ width:28%; }<br \/> .spec-table td:nth-child(4), .spec-table th:nth-child(4){ width:28%; }<\/p>\n<p> \/* Mobile responsive stacked rows *\/<br \/> @media (max-width: 680px){<br \/> .spec-table.wide{ min-width: 0; }<br \/> .spec-table thead{ display:none; }<\/p>\n<p> .spec-table, .spec-table tbody, .spec-table tr, .spec-table td{<br \/> display:block;<br \/> width:100%;<br \/> }<\/p>\n<p> .spec-table tr{<br \/> border:1px solid #ddd;<br \/> margin-bottom:12px;<br \/> }<\/p>\n<p> \/* keep zebra on \u201ccards\u201d *\/<br \/> .spec-table tbody tr:nth-child(odd){ background:#ffffff; }<br \/> .spec-table tbody tr:nth-child(even){ background:#E7E6E6; }<\/p>\n<p> .spec-table td{<br \/> border:none;<br \/> border-bottom:1px solid #eee;<br \/> position:relative;<br \/> padding:10px 12px 10px 48%;<br \/> box-sizing:border-box;<br \/> }<br \/> .spec-table td:last-child{ border-bottom:none; }<\/p>\n<p> .spec-table td::before{<br \/> position:absolute;<br \/> left:12px;<br \/> top:10px;<br \/> width:42%;<br \/> white-space:nowrap;<br \/> font-weight:800;<br \/> content:\"\";<br \/> }<\/p>\n<p> .spec-table td:nth-of-type(1)::before{ content:\"Item\"; }<br \/> .spec-table td:nth-of-type(2)::before{ content:\"Unit\"; }<br \/> .spec-table td:nth-of-type(3)::before{ content:\"Specification\"; }<br \/> .spec-table td:nth-of-type(4)::before{ content:\"Typical Value\"; }<br \/> }<br \/><\/style><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c273a1a e-flex e-con-boxed e-con e-parent\" data-id=\"c273a1a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-20f2b68a elementor-widget elementor-widget-elementskit-heading\" data-id=\"20f2b68a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-heading.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" ><div class=\"ekit-heading elementskit-section-title-wraper text_center ekit_heading_tablet- ekit_heading_mobile-\"><h2 class=\"ekit-heading--title elementskit-section-title \">How is Micro Silica Produced?<\/h2><div class=\"ekit_heading_separetor_wraper ekit_heading_elementskit-border-divider elementskit-style-long\"><div class=\"elementskit-border-divider elementskit-style-long\"><\/div><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c13f04a elementor-widget elementor-widget-image\" data-id=\"c13f04a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"PRODUCTON PROCESS\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTExLCJ1cmwiOiJodHRwczpcL1wvZ3htaWNyb3NpbGljYS5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzAyXC9QUk9EVUNUT04tUFJPQ0VTUy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"610\" src=\"https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS-1024x610.png\" class=\"attachment-large size-large wp-image-111\" alt=\"\" srcset=\"https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS-1024x610.png 1024w, https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS-300x179.png 300w, https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS-768x457.png 768w, https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS-1536x915.png 1536w, https:\/\/gxmicrosilica.com\/wp-content\/uploads\/2026\/02\/PRODUCTON-PROCESS.png 1780w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4ceebc86 e-con-full e-grid e-con e-child\" data-id=\"4ceebc86\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-36b38b35 ekit-equal-height-disable elementor-widget elementor-widget-elementskit-icon-box\" data-id=\"36b38b35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-icon-box.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" > <!-- link opening -->\n <!-- end link opening -->\n\n <div class=\"elementskit-infobox text-left text-left icon-top-align elementor-animation- \">\n <div class=\"elementskit-box-header elementor-animation-\">\n <div class=\"elementskit-info-box-icon \">\n \n <\/div>\n <\/div>\n <div class=\"box-body\">\n <h3 class=\"elementskit-info-box-title\">\n 01 <\/h3>\n \t\t \t<p>Microsilica is a mineral composed of ultrafine, amorphous glassy\nspheres of Silicon Dioxide (SiO2), which is a byproduct of\nproducing Silicon metal or Ferrosilicon alloys. The individual\nparticles are extremely small, approximately 1\/100th the size of an\naverage cement grain.<\/p>\n <\/div>\n \n \n <\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-599c50dd ekit-equal-height-disable elementor-widget elementor-widget-elementskit-icon-box\" data-id=\"599c50dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-icon-box.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" > <!-- link opening -->\n <!-- end link opening -->\n\n <div class=\"elementskit-infobox text-left text-left icon-top-align elementor-animation- \">\n <div class=\"elementskit-box-header elementor-animation-\">\n <div class=\"elementskit-info-box-icon \">\n \n <\/div>\n <\/div>\n <div class=\"box-body\">\n <h3 class=\"elementskit-info-box-title\">\n 02 <\/h3>\n \t\t \t<p>Silicon metal and alloys are produced in electric furnaces. The\nraw materials are quartz, coal, and woodchips. The Microsilica is\nformed when SiO2 gas, given off as the quartz reduces, mixes\nwith oxygen in the upper parts of the furnace. <\/p>\n <\/div>\n \n \n <\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-48e82f2f ekit-equal-height-disable elementor-widget elementor-widget-elementskit-icon-box\" data-id=\"48e82f2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-icon-box.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" > <!-- link opening -->\n <!-- end link opening -->\n\n <div class=\"elementskit-infobox text-left text-left icon-top-align elementor-animation- \">\n <div class=\"elementskit-box-header elementor-animation-\">\n <div class=\"elementskit-info-box-icon \">\n \n <\/div>\n <\/div>\n <div class=\"box-body\">\n <h3 class=\"elementskit-info-box-title\">\n 03 <\/h3>\n \t\t \t<p>Here, the SiO2 is oxidized to SiO2, condensing into the pure\nspherical particles of Microsilica that form the major part of the\nsmoke or fume from the furnace.\n<\/p>\n <\/div>\n \n \n <\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6387f3b ekit-equal-height-disable elementor-widget elementor-widget-elementskit-icon-box\" data-id=\"6387f3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-icon-box.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" > <!-- link opening -->\n <!-- end link opening -->\n\n <div class=\"elementskit-infobox text-left text-left icon-top-align elementor-animation- \">\n <div class=\"elementskit-box-header elementor-animation-\">\n <div class=\"elementskit-info-box-icon \">\n \n <\/div>\n <\/div>\n <div class=\"box-body\">\n <h3 class=\"elementskit-info-box-title\">\n 04 <\/h3>\n \t\t \t<p>The fumes from the furnace are drawn through cooling pipes,\nthrough a pre-collector and cyclone, to remove coarse particles\nthat may have been carried over from the furnace-and then\nblown into specially designed baghouse filters where they are\ncollected.\n<\/p>\n <\/div>\n \n \n <\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3879370c ekit-equal-height-disable elementor-widget elementor-widget-elementskit-icon-box\" data-id=\"3879370c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"elementskit-icon-box.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" > <!-- link opening -->\n <!-- end link opening -->\n\n <div class=\"elementskit-infobox text-left text-left icon-top-align elementor-animation- \">\n <div class=\"elementskit-box-header elementor-animation-\">\n <div class=\"elementskit-info-box-icon \">\n \n <\/div>\n <\/div>\n <div class=\"box-body\">\n <h3 class=\"elementskit-info-box-title\">\n 05 <\/h3>\n \t\t \t<p>The quality of the raw materials and the operation of the furnaces determine the purity of the Microsilica. Although the\nmaterial is collected as a very fine powder with a bulk density in\nthe region of 200kg\/m3, it can be processed to densify it, making\nthe B\/D around 250-700kg\/m3.<\/p>\n <\/div>\n \n \n <\/div>\n <\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Our Products Microsilica Also known as silica fume, is a fine powder consisting of amorphous silicon dioxide (SiO2) that is […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_eb_attr":"","site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-657","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/pages\/657","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/comments?post=657"}],"version-history":[{"count":64,"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/pages\/657\/revisions"}],"predecessor-version":[{"id":1322,"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/pages\/657\/revisions\/1322"}],"wp:attachment":[{"href":"https:\/\/gxmicrosilica.com\/index.php\/wp-json\/wp\/v2\/media?parent=657"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}