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A platform for research: civil engineering, architecture and urbanism
Concrete for high-strength PC component and preparation method of concrete
The invention belongs to the technical field of concrete building materials, and particularly relates to concrete for a high-strength PC component and a preparation method of the concrete. The concrete is prepared from the following raw materials in parts by weight: 250-360 parts of cement, 50-100 parts of coal ash, 500-650 parts of quartz sand, 900-1100 parts of gravel, 60-90 parts of mineral powder, 150-180 parts of water, 9-15 parts of steel fibers, 6-9 parts of a retarding water reducing agent, 3-8 parts of a composite expanding agent and 2-5 parts of a synergist. The retarding water reducing agent comprises the following components in parts by weight: 30-50 parts of an ether polycarboxylic acid water reducing agent, 10-20 parts of aromatic polyamide fiber, 9-15 parts of lignosulfonate, 3-8 parts of a retarder, 0.5-1.5 parts of an initiator and 20-35 parts of water. By compounding the retarding water reducing agent with concrete, the setting time of the concrete is effectively delayed, the strength is improved, and the comprehensive durability of the concrete is favorably improved.
本发明属于混凝土建筑材料技术领域，具体涉及一种用于高强度PC构件的混凝土及其配制方法。本发明混凝土的原料包括以下重量份数的组分：水泥250‑360份、粉煤灰50‑100份、石英砂500‑650份、碎石900‑1100份、矿粉60‑90份、水150‑180份、钢纤维9‑15份、缓凝减水剂6‑9份、复合膨胀剂3‑8份、增效剂2‑5份，其中，缓凝减水剂包括如下重量份数的组分：醚类聚羧酸减水剂30‑50份、芳香聚酰胺纤维10‑20份、木质素磺酸盐9‑15份、缓凝剂3‑8份、引发剂0.5‑1.5份、水20‑35份。本发明通过缓凝减水剂的复配，有效延缓混凝土凝结时间，增加强度，有助于提高混凝土的综合耐久性。
Concrete for high-strength PC component and preparation method of concrete
The invention belongs to the technical field of concrete building materials, and particularly relates to concrete for a high-strength PC component and a preparation method of the concrete. The concrete is prepared from the following raw materials in parts by weight: 250-360 parts of cement, 50-100 parts of coal ash, 500-650 parts of quartz sand, 900-1100 parts of gravel, 60-90 parts of mineral powder, 150-180 parts of water, 9-15 parts of steel fibers, 6-9 parts of a retarding water reducing agent, 3-8 parts of a composite expanding agent and 2-5 parts of a synergist. The retarding water reducing agent comprises the following components in parts by weight: 30-50 parts of an ether polycarboxylic acid water reducing agent, 10-20 parts of aromatic polyamide fiber, 9-15 parts of lignosulfonate, 3-8 parts of a retarder, 0.5-1.5 parts of an initiator and 20-35 parts of water. By compounding the retarding water reducing agent with concrete, the setting time of the concrete is effectively delayed, the strength is improved, and the comprehensive durability of the concrete is favorably improved.
本发明属于混凝土建筑材料技术领域，具体涉及一种用于高强度PC构件的混凝土及其配制方法。本发明混凝土的原料包括以下重量份数的组分：水泥250‑360份、粉煤灰50‑100份、石英砂500‑650份、碎石900‑1100份、矿粉60‑90份、水150‑180份、钢纤维9‑15份、缓凝减水剂6‑9份、复合膨胀剂3‑8份、增效剂2‑5份，其中，缓凝减水剂包括如下重量份数的组分：醚类聚羧酸减水剂30‑50份、芳香聚酰胺纤维10‑20份、木质素磺酸盐9‑15份、缓凝剂3‑8份、引发剂0.5‑1.5份、水20‑35份。本发明通过缓凝减水剂的复配，有效延缓混凝土凝结时间，增加强度，有助于提高混凝土的综合耐久性。
Concrete for high-strength PC component and preparation method of concrete
一种用于高强度PC构件的混凝土及其配制方法
SHENG LEIJUN (author) / WANG YOULU (author) / HUANG GUOYANG (author) / LIU QUAN (author) / WEI LINGLING (author)
2021-04-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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