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Salt-resistant anti-freezing high-durability concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses salt-resistant anti-freezing high-durability concrete and a preparation method thereof.The salt-resistant anti-freezing high-durability concrete is prepared from, by mass, 38-52 parts of fly ash, 70-90 parts of cement, 150-180 parts of sand, 210-300 parts of stone, 2-6 parts of modified nano-silica, 9-15 parts of modified polyacrylonitrile fiber, 3-5 parts of auxiliaries and 105-160 parts of water; the modified nano silicon dioxide and the sand are compounded and filled in the middle of the stone to fill small pores and cracks in the concrete, and the modified polyacrylonitrile fiber has good stability, toughness and crack resistance, can disperse stress, plays a reinforcing effect, avoids structural change caused by stress concentration, and improves the strength of the concrete. According to the present invention, the fly ash is added to balance the expansion-shrinkage stress generated during the freezing-thawing process, the fly ash, the cement and the water co-act to form the cementing material, the raw materials are bonded together, the good strength support is provided, and the obtained concrete has characteristics of good salt resistance, good frost resistance and strong durability.
本发明涉及混凝土技术领域，具体公开了一种抗盐抗冻的高耐久混凝土及其制备方法，按质量份计，包括粉煤灰38‑52份、水泥70‑90份、砂子150‑180份、石子210‑300份、改性纳米二氧化硅2‑6份、改性聚丙烯腈纤维9‑15份、助剂3‑5份，水105‑160份，采用石子作为基本的骨料，改性纳米二氧化硅和砂子复配填充在石子中间，填充混凝土中的小孔隙和裂缝，改性聚丙烯腈纤维具有很好的稳定性、韧性和抗裂性，能够使应力分散，起到了补强效果，避免了由于应力集中而引起的结构变化，平衡了在冻融过程中产生的胀缩应力，粉煤灰、水泥和水共同作用，形成胶凝材料，将各原料粘结起来，提供了很好的强度支撑，得到的混凝土抗盐、抗冻性能好，耐久性强。
Salt-resistant anti-freezing high-durability concrete and preparation method thereof
The invention relates to the technical field of concrete, and particularly discloses salt-resistant anti-freezing high-durability concrete and a preparation method thereof.The salt-resistant anti-freezing high-durability concrete is prepared from, by mass, 38-52 parts of fly ash, 70-90 parts of cement, 150-180 parts of sand, 210-300 parts of stone, 2-6 parts of modified nano-silica, 9-15 parts of modified polyacrylonitrile fiber, 3-5 parts of auxiliaries and 105-160 parts of water; the modified nano silicon dioxide and the sand are compounded and filled in the middle of the stone to fill small pores and cracks in the concrete, and the modified polyacrylonitrile fiber has good stability, toughness and crack resistance, can disperse stress, plays a reinforcing effect, avoids structural change caused by stress concentration, and improves the strength of the concrete. According to the present invention, the fly ash is added to balance the expansion-shrinkage stress generated during the freezing-thawing process, the fly ash, the cement and the water co-act to form the cementing material, the raw materials are bonded together, the good strength support is provided, and the obtained concrete has characteristics of good salt resistance, good frost resistance and strong durability.
本发明涉及混凝土技术领域，具体公开了一种抗盐抗冻的高耐久混凝土及其制备方法，按质量份计，包括粉煤灰38‑52份、水泥70‑90份、砂子150‑180份、石子210‑300份、改性纳米二氧化硅2‑6份、改性聚丙烯腈纤维9‑15份、助剂3‑5份，水105‑160份，采用石子作为基本的骨料，改性纳米二氧化硅和砂子复配填充在石子中间，填充混凝土中的小孔隙和裂缝，改性聚丙烯腈纤维具有很好的稳定性、韧性和抗裂性，能够使应力分散，起到了补强效果，避免了由于应力集中而引起的结构变化，平衡了在冻融过程中产生的胀缩应力，粉煤灰、水泥和水共同作用，形成胶凝材料，将各原料粘结起来，提供了很好的强度支撑，得到的混凝土抗盐、抗冻性能好，耐久性强。
Salt-resistant anti-freezing high-durability concrete and preparation method thereof
一种抗盐抗冻的高耐久混凝土及其制备方法
TANG YUJUAN (author) / FANG ZHENGQING (author) / XU FEI (author) / YAN YURONG (author) / WANG NAN (author)
2024-04-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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