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A platform for research: civil engineering, architecture and urbanism
Shrinkage-compensating concrete and preparation method thereof
The invention relates to the field of building materials, and particularly discloses shrinkage-compensating concrete and a preparation method thereof. The shrinkage-compensating concrete expanding agent is prepared from the following raw materials: cement, fly ash, mineral powder, an alunite expanding agent, coarse aggregate, fine aggregate, an additive, a nonionic surfactant, nano SiO2, zeolite and polypropylene fibers. The preparation method comprises the following steps: S1, aggregate pretreatment; s2, preparing shrinkage-compensating concrete: preparing a polyvinyl alcohol fiber compound, adding nano SiO2 for surface adhesion, and cooling to room temperature for curing to obtain a component a; and mixing the component a with the alunite expanding agent, then adding the rest of other raw materials, and carrying out operations such as pouring and curing on the mixture according to building requirements, so as to obtain the shrinkage-compensating concrete. The concrete prepared by the invention has the characteristics of high strength, good anti-shrinkage effect and lasting crack resistance.
本申请涉及建筑材料领域，具体公开了一种补偿收缩混凝土及其制备方法。补偿收缩混凝土膨胀剂的原料包括：水泥，粉煤灰，矿粉，明矾石膨胀剂，粗骨料、细骨料、外加剂、非离子表面活性剂、纳米SiO2、沸石、聚丙烯纤维；制备方法包括以下步骤：S1、骨料预处理；S2、制备补偿收缩混凝土：制备为聚乙烯醇纤维复合物，再加入纳米SiO2进行表面粘附，待其冷却至室温固化后，即得a组分；将上述a组分与明矾石膨胀剂进行混合后加入剩余其他原料，将混合料按建筑需求进行浇筑、养护等操作，即得补偿收缩混凝土。本申请制得的混凝土具有强度高、抗收缩效果好、持久抗裂的特点。
Shrinkage-compensating concrete and preparation method thereof
The invention relates to the field of building materials, and particularly discloses shrinkage-compensating concrete and a preparation method thereof. The shrinkage-compensating concrete expanding agent is prepared from the following raw materials: cement, fly ash, mineral powder, an alunite expanding agent, coarse aggregate, fine aggregate, an additive, a nonionic surfactant, nano SiO2, zeolite and polypropylene fibers. The preparation method comprises the following steps: S1, aggregate pretreatment; s2, preparing shrinkage-compensating concrete: preparing a polyvinyl alcohol fiber compound, adding nano SiO2 for surface adhesion, and cooling to room temperature for curing to obtain a component a; and mixing the component a with the alunite expanding agent, then adding the rest of other raw materials, and carrying out operations such as pouring and curing on the mixture according to building requirements, so as to obtain the shrinkage-compensating concrete. The concrete prepared by the invention has the characteristics of high strength, good anti-shrinkage effect and lasting crack resistance.
本申请涉及建筑材料领域，具体公开了一种补偿收缩混凝土及其制备方法。补偿收缩混凝土膨胀剂的原料包括：水泥，粉煤灰，矿粉，明矾石膨胀剂，粗骨料、细骨料、外加剂、非离子表面活性剂、纳米SiO2、沸石、聚丙烯纤维；制备方法包括以下步骤：S1、骨料预处理；S2、制备补偿收缩混凝土：制备为聚乙烯醇纤维复合物，再加入纳米SiO2进行表面粘附，待其冷却至室温固化后，即得a组分；将上述a组分与明矾石膨胀剂进行混合后加入剩余其他原料，将混合料按建筑需求进行浇筑、养护等操作，即得补偿收缩混凝土。本申请制得的混凝土具有强度高、抗收缩效果好、持久抗裂的特点。
Shrinkage-compensating concrete and preparation method thereof
一种补偿收缩混凝土及其制备方法
WANG MIN (author) / ZHANG KAIFENG (author) / LUO ZUOQIU (author) / LIU XINGYU (author) / YAO YUAN (author) / TONG XIAOGEN (author) / HU YUBO (author) / ZHU WANGKE (author) / ZHANG XIANG (author)
2023-09-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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