A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Quick-hardening early-strength concrete convenient to construct and preparation method thereof
The invention relates to the field of building materials, and particularly discloses quick-hardening early-strength concrete convenient to construct and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 17.0 to 19.0 parts of cement, 31.93 to 49.25 parts of gravel, 25 to 29 parts of sand, 1.3 to 2.0 parts of fly ash, 1.3 to 2.0 parts of silica fume, 5.0 to 6.7 parts of a quick hardening early strength agent, 0.05 to 0.07 part of boric acid, 0.6 to 1.3 parts of an additive and 6.5 to 8.0 parts of water, wherein the rapid hardening early strength agent comprises amorphous calcium aluminate and calcium sulfate; and the additive comprises a polycarboxylic acid water reducing mother solution, a polycarboxylic acid slump retaining mother solution, a retarder, cellulose ether, an air entraining agent, a defoaming agent and water. The compressive strength of the concrete reaches 30 MPa or above within 4 hours, and meanwhile after one hour, the concrete can be applied to construction. By using the concrete provided by the invention, pavement repair can be completed within the shortest time, and the construction quality meets the traffic requirement.
本申请涉及建筑材料领域，具体公开了一种便于施工的快硬早强混凝土及其制备方法。混凝土由包含以下重量份的原料制成：水泥17.0‑19.0份、碎石31.93‑49.25份、砂25‑29份、粉煤灰1.3‑2.0份、硅灰1.3‑2.0份、快硬早强剂5.0‑6.7份、硼酸0.05‑0.07份、外加剂0.6‑1.3份和水6.5‑8.0份；快硬早强剂包括非晶质铝酸钙和硫酸钙；外加剂包括聚羧酸减水母液、聚羧酸保坍母液、缓凝剂、纤维素醚、引气剂、消泡剂和水。本申请的制得混凝土，抗压强度在4h达到30MPa以上，同时能满足混凝土1h的施工性。使用本申请的混凝土，能在最短时间内完成路面修补且施工质量达到通车要求。
Quick-hardening early-strength concrete convenient to construct and preparation method thereof
The invention relates to the field of building materials, and particularly discloses quick-hardening early-strength concrete convenient to construct and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 17.0 to 19.0 parts of cement, 31.93 to 49.25 parts of gravel, 25 to 29 parts of sand, 1.3 to 2.0 parts of fly ash, 1.3 to 2.0 parts of silica fume, 5.0 to 6.7 parts of a quick hardening early strength agent, 0.05 to 0.07 part of boric acid, 0.6 to 1.3 parts of an additive and 6.5 to 8.0 parts of water, wherein the rapid hardening early strength agent comprises amorphous calcium aluminate and calcium sulfate; and the additive comprises a polycarboxylic acid water reducing mother solution, a polycarboxylic acid slump retaining mother solution, a retarder, cellulose ether, an air entraining agent, a defoaming agent and water. The compressive strength of the concrete reaches 30 MPa or above within 4 hours, and meanwhile after one hour, the concrete can be applied to construction. By using the concrete provided by the invention, pavement repair can be completed within the shortest time, and the construction quality meets the traffic requirement.
本申请涉及建筑材料领域，具体公开了一种便于施工的快硬早强混凝土及其制备方法。混凝土由包含以下重量份的原料制成：水泥17.0‑19.0份、碎石31.93‑49.25份、砂25‑29份、粉煤灰1.3‑2.0份、硅灰1.3‑2.0份、快硬早强剂5.0‑6.7份、硼酸0.05‑0.07份、外加剂0.6‑1.3份和水6.5‑8.0份；快硬早强剂包括非晶质铝酸钙和硫酸钙；外加剂包括聚羧酸减水母液、聚羧酸保坍母液、缓凝剂、纤维素醚、引气剂、消泡剂和水。本申请的制得混凝土，抗压强度在4h达到30MPa以上，同时能满足混凝土1h的施工性。使用本申请的混凝土，能在最短时间内完成路面修补且施工质量达到通车要求。
Quick-hardening early-strength concrete convenient to construct and preparation method thereof
一种便于施工的快硬早强混凝土及其制备方法
LUO JIAN (author) / FAN XIAOLING (author) / HE XIN (author) / XIONG CHUNYANG (author)
2021-09-17
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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