Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Quick-setting dry hard concrete, preparation method and application thereof
The invention provides quick-setting dry hard concrete, a preparation method and application thereof. The quick-setting dry hard concrete is prepared from the following raw materials in parts by weight: 21 to 23 parts of P.II type 42.5 R Portland cement, 34 to 35 parts of river sand, 36 to 38 parts of gravel, 0.02 to 0.03 part of an early strength agent, 0.04 to 0.05 part of a retarder and 0.20 to 0.50 part of an air-entraining type water reducing agent. According to the invention, the quick-setting dry hard concrete is short in final setting time in a low-temperature environment and high in early strength increasing speed, and also has good construction performance; and the raw materials are easy to purchase, the cost is low, the production method is simple and convenient, the breaking strength reaches the design target of 100% in a short time, and the method is easy to popularize and use.
本发明提供一种快凝干硬性混凝土及其制备方法和应用。所述快凝干硬性混凝土包括以下重量份的原料：P·Ⅱ型42.5R硅酸盐水泥21‑23份、河沙34‑35份、碎石36‑38份、早强剂0.02‑0.03份、缓凝剂0.04‑0.05份、引气型减水剂0.20‑0.50份。本发明的快凝干硬性混凝土在低温环境下终凝时间短，早期强度增长速度快，同时还具有良好的施工性能；本发明原料易于采购且成本较低，生产方法简便，短时间内抗折强度达到100％设计目标，易于推广使用。
Quick-setting dry hard concrete, preparation method and application thereof
The invention provides quick-setting dry hard concrete, a preparation method and application thereof. The quick-setting dry hard concrete is prepared from the following raw materials in parts by weight: 21 to 23 parts of P.II type 42.5 R Portland cement, 34 to 35 parts of river sand, 36 to 38 parts of gravel, 0.02 to 0.03 part of an early strength agent, 0.04 to 0.05 part of a retarder and 0.20 to 0.50 part of an air-entraining type water reducing agent. According to the invention, the quick-setting dry hard concrete is short in final setting time in a low-temperature environment and high in early strength increasing speed, and also has good construction performance; and the raw materials are easy to purchase, the cost is low, the production method is simple and convenient, the breaking strength reaches the design target of 100% in a short time, and the method is easy to popularize and use.
本发明提供一种快凝干硬性混凝土及其制备方法和应用。所述快凝干硬性混凝土包括以下重量份的原料：P·Ⅱ型42.5R硅酸盐水泥21‑23份、河沙34‑35份、碎石36‑38份、早强剂0.02‑0.03份、缓凝剂0.04‑0.05份、引气型减水剂0.20‑0.50份。本发明的快凝干硬性混凝土在低温环境下终凝时间短，早期强度增长速度快，同时还具有良好的施工性能；本发明原料易于采购且成本较低，生产方法简便，短时间内抗折强度达到100％设计目标，易于推广使用。
Quick-setting dry hard concrete, preparation method and application thereof
一种快凝干硬性混凝土及其制备方法和应用
ZHANG JICHUN (Autor:in) / YU YUEJIN (Autor:in) / ZHANG YUN (Autor:in) / WU XINPING (Autor:in) / FAN GUANGXIN (Autor:in)
02.11.2021
Patent
Elektronische Ressource
Chinesisch
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