Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Special phosphate-based water reducing agent for high-robustness self-compacting concrete and preparation method of special phosphate-based water reducing agent
The invention provides a special phosphate water reducer for high-robustness self-compacting concrete and a preparation method of the special phosphate water reducer. The special phosphate water reducer for the high-robustness self-compacting concrete is obtained through free radical copolymerization of an unsaturated phosphoric acid monomer, an unsaturated carboxylic acid monomer, unsaturated branched polyether and an unsaturated crosslinking monomer. A branched structure polyether side chain is introduced into a molecular side chain, so that the spatial configuration and the stretching degree of the concrete admixture in a concrete multiphase system can be regulated and controlled; carboxylic acid and phosphoric acid groups and hydrolyzable cross-linking monomers are introduced into a molecular main chain, so that the lubricating effect and the hydrophilic state of concrete can be improved, the slump loss resistance of a concrete mixture is improved, and the gradual loss of concrete is reduced; a concrete mixture can have high flowability, high separation resistance, high filling property and high gap passing capacity; the hardened concrete is excellent in mechanical property and durability, and the compressive strength reaches 50 Mpa or above; the mixing amount of the water reducer is small, the cost can be reduced, and the engineering application adaptability is high.
本发明提供了一种高稳健性自密实混凝土专用磷酸基减水剂及其制备方法，该高稳健性自密实混凝土专用磷酸基减水剂通过不饱和磷酸单体、不饱和羧酸单体、不饱和支化聚醚、不饱和交联单体自由基共聚得到；通过在分子侧链中引入支化结构聚醚侧链，能调控混凝土外加剂在混凝土多相体系中的空间构型及舒展程度；通过在分子主链中引入羧酸和磷酸基团以及可水解的交联单体等，能改善混凝土的润滑效果和亲水状态，提高混凝土拌合物的保坍性，减少混凝土的经时损失；可使混凝土拌和物具有高流动性、高抗分离性、高填充性和高间隙通过能力；硬化后的混凝土力学性能和耐久性能优良，抗压强度达到50Mpa以上；减水剂掺量少，可以降低成本，工程应用适应性强。
Special phosphate-based water reducing agent for high-robustness self-compacting concrete and preparation method of special phosphate-based water reducing agent
The invention provides a special phosphate water reducer for high-robustness self-compacting concrete and a preparation method of the special phosphate water reducer. The special phosphate water reducer for the high-robustness self-compacting concrete is obtained through free radical copolymerization of an unsaturated phosphoric acid monomer, an unsaturated carboxylic acid monomer, unsaturated branched polyether and an unsaturated crosslinking monomer. A branched structure polyether side chain is introduced into a molecular side chain, so that the spatial configuration and the stretching degree of the concrete admixture in a concrete multiphase system can be regulated and controlled; carboxylic acid and phosphoric acid groups and hydrolyzable cross-linking monomers are introduced into a molecular main chain, so that the lubricating effect and the hydrophilic state of concrete can be improved, the slump loss resistance of a concrete mixture is improved, and the gradual loss of concrete is reduced; a concrete mixture can have high flowability, high separation resistance, high filling property and high gap passing capacity; the hardened concrete is excellent in mechanical property and durability, and the compressive strength reaches 50 Mpa or above; the mixing amount of the water reducer is small, the cost can be reduced, and the engineering application adaptability is high.
本发明提供了一种高稳健性自密实混凝土专用磷酸基减水剂及其制备方法，该高稳健性自密实混凝土专用磷酸基减水剂通过不饱和磷酸单体、不饱和羧酸单体、不饱和支化聚醚、不饱和交联单体自由基共聚得到；通过在分子侧链中引入支化结构聚醚侧链，能调控混凝土外加剂在混凝土多相体系中的空间构型及舒展程度；通过在分子主链中引入羧酸和磷酸基团以及可水解的交联单体等，能改善混凝土的润滑效果和亲水状态，提高混凝土拌合物的保坍性，减少混凝土的经时损失；可使混凝土拌和物具有高流动性、高抗分离性、高填充性和高间隙通过能力；硬化后的混凝土力学性能和耐久性能优良，抗压强度达到50Mpa以上；减水剂掺量少，可以降低成本，工程应用适应性强。
Special phosphate-based water reducing agent for high-robustness self-compacting concrete and preparation method of special phosphate-based water reducing agent
一种高稳健性自密实混凝土专用磷酸基减水剂及其制备方法
RAN QIANPING (Autor:in) / CHEN WEILE (Autor:in) / SONG SHENYOU (Autor:in) / XIA ZHENGYI (Autor:in) / LIU JIAPING (Autor:in) / LIU JIAN (Autor:in) / SHU XIN (Autor:in) / JIN WENLIANG (Autor:in) / XIA FENGYONG (Autor:in) / XI JUNJIE (Autor:in)
10.03.2023
Patent
Elektronische Ressource
Chinesisch
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