Effect and influence of microsilica on grout

{"news_id":8776,"is_preview":0,"news_info":{"id":8776,"company_id":176,"user_id":411,"author":"","website_id":781,"pub_date":"2024-03-27 15:55:45","urla":"effect-and-influence-of-microsilica-on-grout","description":"As a mineral admixture added to the grout, ACC microsilica not only plays the role of ultra-fine filling material, but also plays the role of crystal nucleus\u2026","image_url":"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0218\/6970\/65d1727935846\/_MG_7263--1---1-.webp","image_alt":"application of microsilica","title":"Effect and influence of microsilica on grout","content":"<h1><span style=\"color: #444444;\"><strong>Effect and influence of microsilica on grout<\/strong><\/span><\/h1>\n<p>&nbsp;<\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><strong><a href=\"https:\/\/www.allcarbon.com.cn\/microsilica-products\" data-page_id=\"0\" data-page_name=\"\" data-page_type=\"\"><span style=\"color: #2dc26b; text-decoration: underline;\">ACC microsilica<\/span><\/a><\/strong><\/span> is one of the important products of our company, with a range of excellent physical and chemical properties, providing a comprehensive gain in the performance of grout. Its small particles and large specific surface area make it have excellent permeability and filling properties, which can fully fill small voids and improve the density and uniformity of the material. At the same time, high purity SiO2 and high pozzolanic activity ensure the stability and uniformity of the grout in the early hydration process, accelerate the hydration reaction of cement, and improve the durability and strength of the grout.<\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #444444;\"> As a mineral admixture added to the grout, ACC microsilica not only plays the role of ultra-fine filling material, but also plays the role of crystal nucleus in the early hydration process, which has many good effects on the performance of grout material and provides a reliable guarantee for engineering construction.<\/span><\/p>\n<table style=\"line-height: 1.6;\">\n<tbody>\n<tr>\n<td width=\"109\">\n<p><span style=\"color: #444444;\">Products<\/span><\/p>\n<\/td>\n<td width=\"436\">\n<p><span style=\"color: #444444;\">Specifications<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"109\">\n<p><span style=\"color: #2dc26b;\"><a style=\"color: #2dc26b;\" href=\"https:\/\/www.allcarbon.com.cn\/microsilica-products\"><strong>G85D<\/strong><\/a><\/span><\/p>\n<\/td>\n<td width=\"436\">\n<p><span style=\"color: #444444;\">SiO\u2082&gt;85%, Bulk density: Around 500-700kg\/m&sup3;<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"109\">\n<p><span style=\"color: #2dc26b;\"><a style=\"color: #2dc26b;\" href=\"https:\/\/www.allcarbon.com.cn\/microsilica-products\"><strong>G92D<\/strong><\/a><\/span><\/p>\n<\/td>\n<td width=\"436\">\n<p><span style=\"color: #444444;\">SiO\u2082&gt;92%, Bulk density: Around 500-700kg\/m&sup3;<\/span><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td width=\"109\">\n<p><span style=\"color: #2dc26b;\"><a style=\"color: #2dc26b;\" href=\"https:\/\/www.allcarbon.com.cn\/microsilica-products\"><strong>G95D<\/strong><\/a><\/span><\/p>\n<\/td>\n<td width=\"436\">\n<p><span style=\"color: #444444;\">SiO\u2082&gt;94%, Bulk density: Around 500-700kg\/m&sup3;<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"line-height: 1.6;\"><img src=\"https:\/\/oss.matchpages.cn\/matchpages\/common\/2024\/0218\/6970\/65d1727935846\/_MG_7263--1---1-.webp\" alt=\"acc microsilica \" width=\"550\" data-resolution=\"800*450\" \/><\/p>\n<h2 style=\"line-height: 1.6;\"><span style=\"color: #000000;\"><strong>The main role of <\/strong><strong>microsilica <\/strong><strong>in the grout<\/strong><\/span><\/h2>\n<p style=\"line-height: 1.6;\"><span style=\"color: #444444;\">Microsilica in the grout on the application of the seven major roles and considerations.<\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #169179;\">1, Accelerate the hydration of the cementitious material system:<\/span> <\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #7e8c8d;\">With microsilica&nbsp;to replace the same weight of cement, the system 3d and 7d exothermic hydration greatly increased. Need to control the early hydration of exothermic grout project in the selection of materials should pay special attention to this point.<\/span><\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #169179;\">2, Improve the strength of grout:<\/span> <\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #7e8c8d;\">When the microsilica and water reducing agent in line with the use of grout, can make the water-cement ratio of grout is very low, between the cement particles are filled with micro-silica powder dense, grout compressive strength increased. Some studies have proved that the amount of microsilica is too high, the grout late strength has a tendency to decline. Microsilica &nbsp;grout early strength is good, commonly used in emergency repair works\/high-level, playing the degree of mining, wear-resistant, anti-corrosion and other special projects, waterworks on the use of microsilica&nbsp;high-strength grout to improve the strength of the impact of abrasion.<\/span><\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #169179;\">3, Increase densification:&nbsp;<\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #7e8c8d;\">Particle&nbsp;size of microsilica&nbsp;is&nbsp;very small, can be filled in the pore space between the cement particles. Particle density accumulation, can reduce water secretion, reduce the average pore size of the capillary, and reduce the amount of water. Silica powder dosage of 5% to 10%, you can get a good mixing effect.<\/span><\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #169179;\">4, Improve the grout segregation and water secretion performance:<\/span> <\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #7e8c8d;\">After pouring concrete, often produce water from the grout in the separation out of the phenomenon, that is, the formation of a water film in the surface layer, also known as floating slurry, so that the upper layer of grout distribution is not uniform, affecting the quality of construction. The more the amount of microsilica is mixed in, the more difficult it is to segregate and water secretion of the grout material. When the substitution rate reaches 15%, even if the slump of the grout reaches 15\uff5e20cm, it hardly produces segregation and water secretion. <\/span><\/p>\n<p style=\"line-height: 1.6;\"><span style=\"color: #7e8c8d;\">When the substitution rate of 20% to 30%, the grout directly into the tap water should not produce segregation. Because of the micro-silica powder on the grout segregation and water secretion performance improvement, so that mixed with micro-silica powder grout can be used for harbour, tunnel and other underwater projects.<\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #169179;\">5, Improve the impermeability and chemical corrosion resistance of grout:<\/span> <\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #7e8c8d;\">Due to the incorporation of microsilica to improve the grout compactness, greatly reducing the grout void, effectively preventing the invasion of acid ions and corrosion, improve the impermeability of microsilica&nbsp;grout, chemical corrosion resistance, and corrosion resistance of steel has also been improved.<\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #169179;\">6, The grout frost resistance:<\/span> <\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #7e8c8d;\">A&nbsp;large number of studies at home and abroad show that, in the case of equal replacement, the dosage of less than 15% of the microsilica &nbsp;grout, its frost resistance is basically the same, and sometimes improve (such as the dosage of 5% to 10%), but the dosage of more than 20% will significantly reduce the antifreeze of the microsilica grout.<\/span><\/p>\n<h3 style=\"line-height: 1.6;\"><span style=\"color: #444444;\"><span style=\"color: #169179;\">7, Reaction with alkali-aggregate:<\/span> <\/span><\/h3>\n<p style=\"line-height: 1.6;\"><span style=\"color: #7e8c8d;\">Domestic and foreign practice has proved that concrete silica fume heap inhibit concrete alkali - aggregate reaction is favourable. In the calculation of the total alkali grout, microsilica&nbsp;into the effective alkali content in accordance with its total alkali content of 50%&nbsp;of the calculation.<\/span><\/p>\n<p style=\"line-height: 1.6;\">&nbsp;<\/p>\n<p style=\"line-height: 1.6;\">&nbsp;<\/p>","discuss":0,"seo_title":"Effect and influence of microsilica on grout | ACC","seo_keyword":"microsilica,silica fuma,fuma silica","seo_describe":"Microsilica in the grout on the application of the seven major roles and considerations.","track_code":"","viewer":"","source_copy_id":0,"sort":40,"status":0,"data_time":"2024-03-27 15:56:29","create_time":"2024-03-27 15:43:00","update_time":"2025-04-02 09:56:43","type_items":[{"id":2204,"website_id":781,"name":"Microsilica","urla":""}],"tag_items":[]}}

<h1><span style="color: #444444;"><strong>Effect and influence of microsilica on grout</strong></span></h1>
<p> </p>
<p style="line-height: 1.6;"><span style="color: #444444;"><strong><a href="https://www.allcarbon.com.cn/microsilica-products" data-page_id="0" data-page_name="" data-page_type=""><span style="color: #2dc26b; text-decoration: underline;">ACC microsilica</span></a></strong></span> is one of the important products of our company, with a range of excellent physical and chemical properties, providing a comprehensive gain in the performance of grout. Its small particles and large specific surface area make it have excellent permeability and filling properties, which can fully fill small voids and improve the density and uniformity of the material. At the same time, high purity SiO2 and high pozzolanic activity ensure the stability and uniformity of the grout in the early hydration process, accelerate the hydration reaction of cement, and improve the durability and strength of the grout.</p>
<p style="line-height: 1.6;"><span style="color: #444444;"> As a mineral admixture added to the grout, ACC microsilica not only plays the role of ultra-fine filling material, but also plays the role of crystal nucleus in the early hydration process, which has many good effects on the performance of grout material and provides a reliable guarantee for engineering construction.</span></p>
<table style="line-height: 1.6;">
<tbody>
<tr>
<td width="109">
<p><span style="color: #444444;">Products</span></p>
</td>
<td width="436">
<p><span style="color: #444444;">Specifications</span></p>
</td>
</tr>
<tr>
<td width="109">
<p><span style="color: #2dc26b;"><a style="color: #2dc26b;" href="https://www.allcarbon.com.cn/microsilica-products"><strong>G85D</strong></a></span></p>
</td>
<td width="436">
<p><span style="color: #444444;">SiO₂>85%, Bulk density: Around 500-700kg/m³</span></p>
</td>
</tr>
<tr>
<td width="109">
<p><span style="color: #2dc26b;"><a style="color: #2dc26b;" href="https://www.allcarbon.com.cn/microsilica-products"><strong>G92D</strong></a></span></p>
</td>
<td width="436">
<p><span style="color: #444444;">SiO₂>92%, Bulk density: Around 500-700kg/m³</span></p>
</td>
</tr>
<tr>
<td width="109">
<p><span style="color: #2dc26b;"><a style="color: #2dc26b;" href="https://www.allcarbon.com.cn/microsilica-products"><strong>G95D</strong></a></span></p>
</td>
<td width="436">
<p><span style="color: #444444;">SiO₂>94%, Bulk density: Around 500-700kg/m³</span></p>
</td>
</tr>
</tbody>
</table>
<p style="line-height: 1.6;"><img src="https://oss.matchpages.cn/matchpages/common/2024/0218/6970/65d1727935846/_MG_7263--1---1-.webp" alt="acc microsilica " width="550" data-resolution="800*450" /></p>
<h2 style="line-height: 1.6;"><span style="color: #000000;"><strong>The main role of </strong><strong>microsilica </strong><strong>in the grout</strong></span></h2>
<p style="line-height: 1.6;"><span style="color: #444444;">Microsilica in the grout on the application of the seven major roles and considerations.</span></p>
<h3 style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #169179;">1, Accelerate the hydration of the cementitious material system:</span> </span></h3>
<p style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #7e8c8d;">With microsilica to replace the same weight of cement, the system 3d and 7d exothermic hydration greatly increased. Need to control the early hydration of exothermic grout project in the selection of materials should pay special attention to this point.</span></span></p>
<h3 style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #169179;">2, Improve the strength of grout:</span> </span></h3>
<p style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #7e8c8d;">When the microsilica and water reducing agent in line with the use of grout, can make the water-cement ratio of grout is very low, between the cement particles are filled with micro-silica powder dense, grout compressive strength increased. Some studies have proved that the amount of microsilica is too high, the grout late strength has a tendency to decline. Microsilica  grout early strength is good, commonly used in emergency repair works/high-level, playing the degree of mining, wear-resistant, anti-corrosion and other special projects, waterworks on the use of microsilica high-strength grout to improve the strength of the impact of abrasion.</span></span></p>
<h3 style="line-height: 1.6;"><span style="color: #169179;">3, Increase densification: </span></h3>
<p style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #7e8c8d;">Particle size of microsilica is very small, can be filled in the pore space between the cement particles. Particle density accumulation, can reduce water secretion, reduce the average pore size of the capillary, and reduce the amount of water. Silica powder dosage of 5% to 10%, you can get a good mixing effect.</span></span></p>
<h3 style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #169179;">4, Improve the grout segregation and water secretion performance:</span> </span></h3>
<p style="line-height: 1.6;"><span style="color: #7e8c8d;">After pouring concrete, often produce water from the grout in the separation out of the phenomenon, that is, the formation of a water film in the surface layer, also known as floating slurry, so that the upper layer of grout distribution is not uniform, affecting the quality of construction. The more the amount of microsilica is mixed in, the more difficult it is to segregate and water secretion of the grout material. When the substitution rate reaches 15%, even if the slump of the grout reaches 15～20cm, it hardly produces segregation and water secretion. </span></p>
<p style="line-height: 1.6;"><span style="color: #7e8c8d;">When the substitution rate of 20% to 30%, the grout directly into the tap water should not produce segregation. Because of the micro-silica powder on the grout segregation and water secretion performance improvement, so that mixed with micro-silica powder grout can be used for harbour, tunnel and other underwater projects.</span></p>
<h3 style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #169179;">5, Improve the impermeability and chemical corrosion resistance of grout:</span> </span></h3>
<p style="line-height: 1.6;"><span style="color: #7e8c8d;">Due to the incorporation of microsilica to improve the grout compactness, greatly reducing the grout void, effectively preventing the invasion of acid ions and corrosion, improve the impermeability of microsilica grout, chemical corrosion resistance, and corrosion resistance of steel has also been improved.</span></p>
<h3 style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #169179;">6, The grout frost resistance:</span> </span></h3>
<p style="line-height: 1.6;"><span style="color: #7e8c8d;">A large number of studies at home and abroad show that, in the case of equal replacement, the dosage of less than 15% of the microsilica  grout, its frost resistance is basically the same, and sometimes improve (such as the dosage of 5% to 10%), but the dosage of more than 20% will significantly reduce the antifreeze of the microsilica grout.</span></p>
<h3 style="line-height: 1.6;"><span style="color: #444444;"><span style="color: #169179;">7, Reaction with alkali-aggregate:</span> </span></h3>
<p style="line-height: 1.6;"><span style="color: #7e8c8d;">Domestic and foreign practice has proved that concrete silica fume heap inhibit concrete alkali - aggregate reaction is favourable. In the calculation of the total alkali grout, microsilica into the effective alkali content in accordance with its total alkali content of 50% of the calculation.</span></p>
<p style="line-height: 1.6;"> </p>
<p style="line-height: 1.6;"> </p>