A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-strength gypsum-based self-leveling mortar and preparation method thereof
The invention discloses high-strength gypsum-based self-leveling mortar which comprises building gypsum, water, cement, silica fume, fly ash, sand aggregate, a water-retaining agent, a retarder, a water reducing agent, a defoaming agent and rubber powder, and the sand aggregate is ore sand and/or stone powder. The invention also discloses a preparation method of the high-strength gypsum-based self-leveling mortar. According to the high-strength gypsum-based self-leveling mortar provided by the invention, the coal ash or the silica fume is subjected to alkaline excitation on the basis of compounding a small amount of cement in the building gypsum, and the coal ash and/or the silica fume are/is adopted, so that the hydration heat release of the cement can be reduced, and the compactness of a hardened body is enhanced; the fluidity, cohesiveness and water-retaining property of the mortar are improved by using the glass sphere form of the fly ash and the co-doped sand aggregate, and finally the chemical admixture with good compatibility is supplemented for modification treatment, so that the physical and mechanical properties of the cementing material are effectively improved, resources are reasonably utilized on the premise that the gypsum-based self-leveling mortar has relatively high strength, and the gypsum-based self-leveling mortar is suitable for industrial production. The cost of the gypsum-based self-leveling mortar is reduced.
本发明公开了一种高强型石膏基自流平砂浆，包括建筑石膏，水，水泥，硅灰，粉煤灰，砂集料，保水剂，缓凝剂，减水剂，消泡剂和胶粉，砂集料为矿砂和/或石粉。本发明还公开了该高强型石膏基自流平砂浆的制备方法。本发明所提供的高强型石膏基自流平砂浆，通过在建筑石膏中复合少量水泥的基础上对粉煤灰或硅灰进行碱性激发，以及采用粉煤灰和/或硅灰能够减小水泥水化放热量，增强硬化体密实性；再利用粉煤灰的玻璃球体形态以及复掺砂集料改善浆体的流动性、粘聚性与保水性，最后辅以相容性良好的化学外加剂进行改性处理，有效改善胶结材物理力学性能，使得该石膏基自流平砂浆在具有较高强度的前提下合理利用资源，降低石膏基自流平砂浆的成本。
High-strength gypsum-based self-leveling mortar and preparation method thereof
The invention discloses high-strength gypsum-based self-leveling mortar which comprises building gypsum, water, cement, silica fume, fly ash, sand aggregate, a water-retaining agent, a retarder, a water reducing agent, a defoaming agent and rubber powder, and the sand aggregate is ore sand and/or stone powder. The invention also discloses a preparation method of the high-strength gypsum-based self-leveling mortar. According to the high-strength gypsum-based self-leveling mortar provided by the invention, the coal ash or the silica fume is subjected to alkaline excitation on the basis of compounding a small amount of cement in the building gypsum, and the coal ash and/or the silica fume are/is adopted, so that the hydration heat release of the cement can be reduced, and the compactness of a hardened body is enhanced; the fluidity, cohesiveness and water-retaining property of the mortar are improved by using the glass sphere form of the fly ash and the co-doped sand aggregate, and finally the chemical admixture with good compatibility is supplemented for modification treatment, so that the physical and mechanical properties of the cementing material are effectively improved, resources are reasonably utilized on the premise that the gypsum-based self-leveling mortar has relatively high strength, and the gypsum-based self-leveling mortar is suitable for industrial production. The cost of the gypsum-based self-leveling mortar is reduced.
本发明公开了一种高强型石膏基自流平砂浆，包括建筑石膏，水，水泥，硅灰，粉煤灰，砂集料，保水剂，缓凝剂，减水剂，消泡剂和胶粉，砂集料为矿砂和/或石粉。本发明还公开了该高强型石膏基自流平砂浆的制备方法。本发明所提供的高强型石膏基自流平砂浆，通过在建筑石膏中复合少量水泥的基础上对粉煤灰或硅灰进行碱性激发，以及采用粉煤灰和/或硅灰能够减小水泥水化放热量，增强硬化体密实性；再利用粉煤灰的玻璃球体形态以及复掺砂集料改善浆体的流动性、粘聚性与保水性，最后辅以相容性良好的化学外加剂进行改性处理，有效改善胶结材物理力学性能，使得该石膏基自流平砂浆在具有较高强度的前提下合理利用资源，降低石膏基自流平砂浆的成本。
High-strength gypsum-based self-leveling mortar and preparation method thereof
一种高强型石膏基自流平砂浆及其制备方法
PENG JIAHUI (author) / ZHAO MIN (author) / QU JINDONG (author) / LIU XIANFENG (author) / FAN PUYUE (author)
2022-08-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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