A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete deflocculating agent as well as preparation method and application thereof
The invention provides a concrete anti-flocculating agent as well as a preparation method and application thereof. The concrete anti-flocculating agent is prepared from the following raw materials: 5 to 10 parts of polymer solution containing nano titanium dioxide, 20 to 30 parts of peroxide, 1 to 5 parts of retarding component and 60 to 95 parts of solvent. According to the anti-flocculating agent disclosed by the invention, on one hand, anionic polyacrylamide in a polymer containing nano titanium dioxide is used for adsorption, nano TiO2 reacts with water, oxygen in air, peroxides and other substances under light irradiation, and free radicals with extremely high oxidation capacity are generated near the anionic polyacrylamide, so that polyacrylamide in concrete is rapidly degraded; on the other hand, a proper amount of retarding substance is added and complexed with metal ions such as Al < 3 + > and Fe < 3 + > generated by a flocculating agent polymerization chlorinated metal compound, so that rapid hydration of the cement is prevented, and the flowability and plasticity retaining property of the concrete are improved. When the deflocculating agent is used in concrete, the problems that the concrete with the flocculating agent is high in viscosity, rapid in time loss and the like can be solved.
本发明提供了一种混凝土抗絮凝剂及其制备方法和应用，原料包括：含纳米二氧化钛聚合物溶液5～10份，过氧化物20～30份，缓凝组分1～5份，溶剂60～95份。本发明抗絮凝剂一方面使用含纳米二氧化钛聚合物中阴离子聚丙烯酰胺进行吸附，在光照射下，纳米TiO2与水、空气中氧气、过氧化物等物质反应，在阴离子聚丙烯酰胺附近产生氧化能力极强的自由基，使混凝土中聚丙烯酰胺迅速降解；另一方面加入适量缓凝物质，与絮凝剂聚合氯化金属化合物产生的Al3+、Fe3+等金属离子络合，防止水泥快速水化，提高混凝土流动性和保塑性。将该抗絮凝剂用于混凝土中，可以克服带絮凝剂混凝土粘度大、经时损失快等问题。
Concrete deflocculating agent as well as preparation method and application thereof
The invention provides a concrete anti-flocculating agent as well as a preparation method and application thereof. The concrete anti-flocculating agent is prepared from the following raw materials: 5 to 10 parts of polymer solution containing nano titanium dioxide, 20 to 30 parts of peroxide, 1 to 5 parts of retarding component and 60 to 95 parts of solvent. According to the anti-flocculating agent disclosed by the invention, on one hand, anionic polyacrylamide in a polymer containing nano titanium dioxide is used for adsorption, nano TiO2 reacts with water, oxygen in air, peroxides and other substances under light irradiation, and free radicals with extremely high oxidation capacity are generated near the anionic polyacrylamide, so that polyacrylamide in concrete is rapidly degraded; on the other hand, a proper amount of retarding substance is added and complexed with metal ions such as Al < 3 + > and Fe < 3 + > generated by a flocculating agent polymerization chlorinated metal compound, so that rapid hydration of the cement is prevented, and the flowability and plasticity retaining property of the concrete are improved. When the deflocculating agent is used in concrete, the problems that the concrete with the flocculating agent is high in viscosity, rapid in time loss and the like can be solved.
本发明提供了一种混凝土抗絮凝剂及其制备方法和应用，原料包括：含纳米二氧化钛聚合物溶液5～10份，过氧化物20～30份，缓凝组分1～5份，溶剂60～95份。本发明抗絮凝剂一方面使用含纳米二氧化钛聚合物中阴离子聚丙烯酰胺进行吸附，在光照射下，纳米TiO2与水、空气中氧气、过氧化物等物质反应，在阴离子聚丙烯酰胺附近产生氧化能力极强的自由基，使混凝土中聚丙烯酰胺迅速降解；另一方面加入适量缓凝物质，与絮凝剂聚合氯化金属化合物产生的Al3+、Fe3+等金属离子络合，防止水泥快速水化，提高混凝土流动性和保塑性。将该抗絮凝剂用于混凝土中，可以克服带絮凝剂混凝土粘度大、经时损失快等问题。
Concrete deflocculating agent as well as preparation method and application thereof
一种混凝土抗絮凝剂及其制备方法和应用
CAO WEIHUA (author) / XU GENGYOU (author) / CHEN FENG (author) / QIAN SHANSHAN (author) / SONG NANJING (author) / SI HONGZHEN (author) / YAN CHAO (author) / ZHAO CHANG (author) / JIANG BIAO (author) / WANG CHANGQING (author)
2024-07-26
Patent
Electronic Resource
Chinese
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