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Micro-expansion concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses micro-expansion concrete and a preparation method thereof. The micro-expansion concrete comprises the following raw materialin parts by weight: 850-930 parts of gravel, 790-910 parts of sand, 280-360 parts of cement, 85-135 parts of admixture, 25-35 parts of ettringite expanding agent, 6-12 parts of pumping agent, 31-44 parts of inhibitor and 150-210 parts of drinking water. The inhibitor is prepared by compounding chitosan, a capsule wall material and a pH regulator. The preparation method comprises the following steps: adding the gravel, the sand and the cement into a stirrer, stirring for 5 minutes, adding the admixture and the ettringite expanding agent, stirring for 5 minutes, adding the pumping agent and thedrinking water, stirring for 10 minutes, adding the inhibitor, and stirring for 4 minutes to obtain the micro-expansion concrete. The micro-expansion concrete can be applied to mass concrete pouring,and has the advantages that secondary generation of ettringite is reduced, and mass concrete cracking is reduced.
本申请涉及混凝土领域，具体公开了一种微膨胀混凝土及其制备方法。一种微膨胀混凝土，包含以下重量份的原料：碎石：850～930，砂：790～910，水泥：280～360，掺合料：85～135，钙矾石系膨胀剂：25～35，泵送剂：6～12，抑制剂：31～44，饮用水：150～210，所述抑制剂由壳聚糖、囊壁材料和pH调节剂复配而成；其制备方法为：将碎石、砂和水泥加入搅拌机内，搅拌5min后加入掺合料和钙矾石系膨胀剂，搅拌5min后加入泵送剂和饮用水，搅拌10min后加入抑制剂，搅拌4min制得微膨胀混凝土。本申请的微膨胀混凝土可用于大体积混凝土浇筑，其具有减少钙矾石的二次生成，减少大体积混凝土开裂的优点。
Micro-expansion concrete and preparation method thereof
The invention relates to the field of concrete, and particularly discloses micro-expansion concrete and a preparation method thereof. The micro-expansion concrete comprises the following raw materialin parts by weight: 850-930 parts of gravel, 790-910 parts of sand, 280-360 parts of cement, 85-135 parts of admixture, 25-35 parts of ettringite expanding agent, 6-12 parts of pumping agent, 31-44 parts of inhibitor and 150-210 parts of drinking water. The inhibitor is prepared by compounding chitosan, a capsule wall material and a pH regulator. The preparation method comprises the following steps: adding the gravel, the sand and the cement into a stirrer, stirring for 5 minutes, adding the admixture and the ettringite expanding agent, stirring for 5 minutes, adding the pumping agent and thedrinking water, stirring for 10 minutes, adding the inhibitor, and stirring for 4 minutes to obtain the micro-expansion concrete. The micro-expansion concrete can be applied to mass concrete pouring,and has the advantages that secondary generation of ettringite is reduced, and mass concrete cracking is reduced.
本申请涉及混凝土领域，具体公开了一种微膨胀混凝土及其制备方法。一种微膨胀混凝土，包含以下重量份的原料：碎石：850～930，砂：790～910，水泥：280～360，掺合料：85～135，钙矾石系膨胀剂：25～35，泵送剂：6～12，抑制剂：31～44，饮用水：150～210，所述抑制剂由壳聚糖、囊壁材料和pH调节剂复配而成；其制备方法为：将碎石、砂和水泥加入搅拌机内，搅拌5min后加入掺合料和钙矾石系膨胀剂，搅拌5min后加入泵送剂和饮用水，搅拌10min后加入抑制剂，搅拌4min制得微膨胀混凝土。本申请的微膨胀混凝土可用于大体积混凝土浇筑，其具有减少钙矾石的二次生成，减少大体积混凝土开裂的优点。
Micro-expansion concrete and preparation method thereof
一种微膨胀混凝土及其制备方法
HAN PEIYI (author) / LIU JUNPING (author) / TANG JUNDONG (author) / LI YUANMIN (author) / LIU YANQUN (author)
2020-11-24
Patent
Electronic Resource
Chinese
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