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A platform for research: civil engineering, architecture and urbanism
Formula and preparation method of steam-curing-free self-compacting concrete for prefabricated parts
The invention provides a formula and a preparation method of steam-curing-free self-compacting concrete for prefabricated parts. The formula comprises the following raw materials: 170 to 180 parts of water, 270 to 300 parts of cement, 800 to 820 parts of sand, 950 to 970 parts of stone, 60 to 70 parts of fly ash, 80 to 90 parts of slag powder, 6.4 parts of a water reducing agent and 40 to 45 parts of a strength promoting and shrinkage reducing agent. The strength-promoting shrinkage-reducing agent is adopted to replace an early strength agent, and a synergistic effect is generated by reasonably adjusting the component proportion, so that the prepared concrete is relatively high in early strength, the requirement of steam-curing-free rapid demolding is met, and meanwhile, the fluidity of the concrete is adjusted to achieve a vibration-free self-compacting effect.
本发明提供了一种预制构件用免蒸养自密实混凝土配方及其配置方法。本发明原料包括包括以下原料：水170‑180份，水泥270‑300份，砂800‑820份，石料950‑970份，粉煤灰60‑70份，矿渣粉80‑90份，减水剂6.4份以及促强减缩剂40‑45份。采用促强减缩剂替代早强剂，通过合理调节其成分配比产生协同作用,使得制备得到的混凝土的早期强度较高,从而满足免蒸养快速脱模的要求同时调节混凝土的流动性达到免振捣自密实的效果。
Formula and preparation method of steam-curing-free self-compacting concrete for prefabricated parts
The invention provides a formula and a preparation method of steam-curing-free self-compacting concrete for prefabricated parts. The formula comprises the following raw materials: 170 to 180 parts of water, 270 to 300 parts of cement, 800 to 820 parts of sand, 950 to 970 parts of stone, 60 to 70 parts of fly ash, 80 to 90 parts of slag powder, 6.4 parts of a water reducing agent and 40 to 45 parts of a strength promoting and shrinkage reducing agent. The strength-promoting shrinkage-reducing agent is adopted to replace an early strength agent, and a synergistic effect is generated by reasonably adjusting the component proportion, so that the prepared concrete is relatively high in early strength, the requirement of steam-curing-free rapid demolding is met, and meanwhile, the fluidity of the concrete is adjusted to achieve a vibration-free self-compacting effect.
本发明提供了一种预制构件用免蒸养自密实混凝土配方及其配置方法。本发明原料包括包括以下原料：水170‑180份，水泥270‑300份，砂800‑820份，石料950‑970份，粉煤灰60‑70份，矿渣粉80‑90份，减水剂6.4份以及促强减缩剂40‑45份。采用促强减缩剂替代早强剂，通过合理调节其成分配比产生协同作用,使得制备得到的混凝土的早期强度较高,从而满足免蒸养快速脱模的要求同时调节混凝土的流动性达到免振捣自密实的效果。
Formula and preparation method of steam-curing-free self-compacting concrete for prefabricated parts
一种预制构件用免蒸养自密实混凝土配方及其配置方法
ZHU QINGHONG (author)
2022-01-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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