A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to early-strength and low-shrinkage concrete containing waste stone powder and a preparation method thereof. The concrete comprises the waste stone powder, cement, water, river sand, gravels and a water reducing agent. The mass ratio of the waste stone powder to the cement is 25-60%; the mass ratio of the waste stone powder to the river sand is 20-40%; and the mass ratio (w/c) of water to ash in the concrete is 0.25-0.65. The waste stone powder, the cement, the water, the river sand and the gravels are poured into a stirrer to be stirred, and the water reducing agent is doped in the stirring process until the mixture is uniformly stirred, so as to obtain the early-strength and low-shrinkage concrete containing the waste stone powder. Compared with the prior art, the cost is reduced, the mechanical property and the volume stability of the concrete are improved, and meanwhile the problems of occupied area stacking of waste stone powder and environmental pollution are solved.
本发明涉及一种含废弃石粉的早强、低收缩混凝土及其制备方法，该混凝土包括废弃石粉、水泥、水、河砂、碎石和减水剂；所述的废弃石粉与水泥的质量之比为25‑60％；所述的废弃石粉与河砂的质量之比为20‑40％；混凝土中的水灰质量比(w/c)为0.25‑0.65。将废弃石粉、水泥、水、河砂和碎石倒入搅拌机中拌和，搅拌过程中掺入减水剂至搅拌均匀即可得到含废弃石粉的早强、低收缩混凝土。与现有技术相比，本发明降低成本、提升混凝土的力学性能和体积稳定性，同时解决废弃石粉占地堆放及污染环境难题。
The invention relates to early-strength and low-shrinkage concrete containing waste stone powder and a preparation method thereof. The concrete comprises the waste stone powder, cement, water, river sand, gravels and a water reducing agent. The mass ratio of the waste stone powder to the cement is 25-60%; the mass ratio of the waste stone powder to the river sand is 20-40%; and the mass ratio (w/c) of water to ash in the concrete is 0.25-0.65. The waste stone powder, the cement, the water, the river sand and the gravels are poured into a stirrer to be stirred, and the water reducing agent is doped in the stirring process until the mixture is uniformly stirred, so as to obtain the early-strength and low-shrinkage concrete containing the waste stone powder. Compared with the prior art, the cost is reduced, the mechanical property and the volume stability of the concrete are improved, and meanwhile the problems of occupied area stacking of waste stone powder and environmental pollution are solved.
本发明涉及一种含废弃石粉的早强、低收缩混凝土及其制备方法，该混凝土包括废弃石粉、水泥、水、河砂、碎石和减水剂；所述的废弃石粉与水泥的质量之比为25‑60％；所述的废弃石粉与河砂的质量之比为20‑40％；混凝土中的水灰质量比(w/c)为0.25‑0.65。将废弃石粉、水泥、水、河砂和碎石倒入搅拌机中拌和，搅拌过程中掺入减水剂至搅拌均匀即可得到含废弃石粉的早强、低收缩混凝土。与现有技术相比，本发明降低成本、提升混凝土的力学性能和体积稳定性，同时解决废弃石粉占地堆放及污染环境难题。
Early-strength and low-shrinkage concrete containing waste stone powder and preparation method thereof
一种含废弃石粉的早强、低收缩混凝土及其制备方法
2021-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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