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High-performance concrete produced from stone powder and machine-made sand and production method of high-performance concrete
The invention provides high-performance concrete produced from stone powder and machine-made sand and a production method of the high-performance concrete. The high-performance concrete comprises the following raw materials in parts by weight: 10-17 parts of cement; 2 to 4.5 parts of fly ash; 26-38 parts of machine-made sand; 1.6 to 9.7 parts of stone powder; 35-50 parts of gravel; 5-9 parts of water; 0.3 to 0.55 percent of a polycarboxylic acid water reducing agent; the polycarboxylate superplasticizer is prepared from the following raw materials: white sugar, sodium gluconate, sodium methallyl sulfonate, isopentenol polyoxyethylene ether, acrylic acid and an initiator e, wherein the acrylic acid and the isopentenol polyoxyethylene ether are taken according to an acid-ether ratio of 4: 1. The white sugar and the sodium gluconate generate sodium gluconate which is combined with calcium ions in the cement, so that the hydration reaction rate of the cement is slowed down, and the flowability of the concrete is preliminarily improved; acrylic acid and isopentenol polyoxyethylene ether are subjected to a free radical polymerization reaction to generate an acrylic acid-isopentenol copolymer, and the fluidity of the concrete is further improved by utilizing electrostatic repulsion and a steric hindrance effect.
本发明提供一种石粉、机制砂生产的高性能混凝土及生产方法，该高性能混凝土包括以下重量份的原料：水泥10～17；粉煤灰2～4.5；机制砂26～38；石粉1.6～9.7；碎石35～50；水5～9；聚羧酸减水剂0.3～0.55；聚羧酸减水剂的制备原料包括白糖、葡萄糖酸钠、甲基丙烯磺酸钠、异戊烯醇聚氧乙烯醚、丙烯酸和引发剂e，丙烯酸和异戊烯醇聚氧乙烯醚按酸醚比4:1取量。白糖和葡萄糖酸钠生成葡萄糖酸钠酯，与水泥中的钙离子结合，减缓水泥的水化反应速率，初步提高混凝土的流动性；丙烯酸和异戊烯醇聚氧乙烯醚发生自由基聚合反应生成丙烯酸‑异戊烯醇共聚物，利用静电斥力和空间位阻效应，进一步提高混凝土的流动性。
High-performance concrete produced from stone powder and machine-made sand and production method of high-performance concrete
The invention provides high-performance concrete produced from stone powder and machine-made sand and a production method of the high-performance concrete. The high-performance concrete comprises the following raw materials in parts by weight: 10-17 parts of cement; 2 to 4.5 parts of fly ash; 26-38 parts of machine-made sand; 1.6 to 9.7 parts of stone powder; 35-50 parts of gravel; 5-9 parts of water; 0.3 to 0.55 percent of a polycarboxylic acid water reducing agent; the polycarboxylate superplasticizer is prepared from the following raw materials: white sugar, sodium gluconate, sodium methallyl sulfonate, isopentenol polyoxyethylene ether, acrylic acid and an initiator e, wherein the acrylic acid and the isopentenol polyoxyethylene ether are taken according to an acid-ether ratio of 4: 1. The white sugar and the sodium gluconate generate sodium gluconate which is combined with calcium ions in the cement, so that the hydration reaction rate of the cement is slowed down, and the flowability of the concrete is preliminarily improved; acrylic acid and isopentenol polyoxyethylene ether are subjected to a free radical polymerization reaction to generate an acrylic acid-isopentenol copolymer, and the fluidity of the concrete is further improved by utilizing electrostatic repulsion and a steric hindrance effect.
本发明提供一种石粉、机制砂生产的高性能混凝土及生产方法，该高性能混凝土包括以下重量份的原料：水泥10～17；粉煤灰2～4.5；机制砂26～38；石粉1.6～9.7；碎石35～50；水5～9；聚羧酸减水剂0.3～0.55；聚羧酸减水剂的制备原料包括白糖、葡萄糖酸钠、甲基丙烯磺酸钠、异戊烯醇聚氧乙烯醚、丙烯酸和引发剂e，丙烯酸和异戊烯醇聚氧乙烯醚按酸醚比4:1取量。白糖和葡萄糖酸钠生成葡萄糖酸钠酯，与水泥中的钙离子结合，减缓水泥的水化反应速率，初步提高混凝土的流动性；丙烯酸和异戊烯醇聚氧乙烯醚发生自由基聚合反应生成丙烯酸‑异戊烯醇共聚物，利用静电斥力和空间位阻效应，进一步提高混凝土的流动性。
High-performance concrete produced from stone powder and machine-made sand and production method of high-performance concrete
一种石粉、机制砂生产的高性能混凝土及生产方法
LIU GUOTAO (author) / CAI PENGFEI (author) / WU LIANGJIAO (author) / LI WEIHAO (author) / YANG QIN (author)
2023-11-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2023
| European Patent Office | 2021