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Ultra-high performance concrete and preparation method thereof
The invention provides ultra-high performance concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 260 to 280 parts of cement, 120 to 160 parts of modified quartz sand powder, 8 to 15 parts of modified steel fiber, 20 to 26 parts of fly ash, 7 to 12 parts of polycarboxylic acid water reducing agent, 16 to 24 parts of EVA (Ethylene-Vinyl Acetate) emulsion, 4 to 7 parts of alkali-resistant glass fiber and 140 to 180 parts of water. A preparation method of the modified steel fiber comprises the steps that steel fiber is taken and soaked in a potassium hydroxide solution and then dried, the dried steel fiber is added into calcium hydroxide slurry, potassium carbonate is added for a primary stirring reaction, then a mixed solution of nano SiO2 and a coupling agent is added for a secondary stirring reaction, filtering and drying are conducted, and the modified steel fiber is obtained. According to the prepared ultra-high performance concrete, all the raw materials are scientifically proportioned, the ultra-high performance concrete has good toughness, strength and crack resistance, and the service life of the concrete can be effectively prolonged.
本发明提供一种超高性能混凝土及其制备方法，该混凝土包括以下重量份的原料：水泥260‑280份、改性石英砂粉末120‑160份、改性钢纤维8‑15份、粉煤灰20‑26份、聚羧酸减水剂7‑12份、EVA乳液16‑24份、耐碱玻璃纤维4‑7份、水140‑180份。所述改性钢纤维的制备方法为：取钢纤维浸泡在氢氧化钾溶液中然后干燥，将干燥后的钢纤维加入氢氧化钙浆料中，再加入碳酸钾进行一次搅拌反应，然后再加入纳米SiO2和偶联剂的混合溶液进行二次搅拌反应，过滤，干燥，即得到改性钢纤维。本发明制备得到的超高性能混凝土，各个原料科学配比，具有良好的韧性、强度和抗裂性，能够有效提高混凝土的使用寿命。
Ultra-high performance concrete and preparation method thereof
The invention provides ultra-high performance concrete and a preparation method thereof. The concrete is prepared from the following raw materials in parts by weight: 260 to 280 parts of cement, 120 to 160 parts of modified quartz sand powder, 8 to 15 parts of modified steel fiber, 20 to 26 parts of fly ash, 7 to 12 parts of polycarboxylic acid water reducing agent, 16 to 24 parts of EVA (Ethylene-Vinyl Acetate) emulsion, 4 to 7 parts of alkali-resistant glass fiber and 140 to 180 parts of water. A preparation method of the modified steel fiber comprises the steps that steel fiber is taken and soaked in a potassium hydroxide solution and then dried, the dried steel fiber is added into calcium hydroxide slurry, potassium carbonate is added for a primary stirring reaction, then a mixed solution of nano SiO2 and a coupling agent is added for a secondary stirring reaction, filtering and drying are conducted, and the modified steel fiber is obtained. According to the prepared ultra-high performance concrete, all the raw materials are scientifically proportioned, the ultra-high performance concrete has good toughness, strength and crack resistance, and the service life of the concrete can be effectively prolonged.
本发明提供一种超高性能混凝土及其制备方法，该混凝土包括以下重量份的原料：水泥260‑280份、改性石英砂粉末120‑160份、改性钢纤维8‑15份、粉煤灰20‑26份、聚羧酸减水剂7‑12份、EVA乳液16‑24份、耐碱玻璃纤维4‑7份、水140‑180份。所述改性钢纤维的制备方法为：取钢纤维浸泡在氢氧化钾溶液中然后干燥，将干燥后的钢纤维加入氢氧化钙浆料中，再加入碳酸钾进行一次搅拌反应，然后再加入纳米SiO2和偶联剂的混合溶液进行二次搅拌反应，过滤，干燥，即得到改性钢纤维。本发明制备得到的超高性能混凝土，各个原料科学配比，具有良好的韧性、强度和抗裂性，能够有效提高混凝土的使用寿命。
Ultra-high performance concrete and preparation method thereof
一种超高性能混凝土及其制备方法
KANG XIUHAN (author) / HUANG DI (author) / LIN XIANGUI (author) / MENG FAZHI (author)
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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