Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-cracking shrinkage-reducing concrete admixture and preparation method thereof
The invention relates to the technical field of building materials, in particular to an anti-crack shrinkage-reducing type concrete admixture and a preparation method thereof. The concrete admixture comprises the following preparation raw materials: an unsaturated polyoxyethylene ether monomer, a catalyst, acrylic acid, a functionalized modified nano graphene oxide solution, an initiator, a chain transfer agent, unsaturated acid, a cross-linking agent, a quaternary ammonium salt cationic monomer and a reducing agent. According to the anti-cracking shrinkage-reducing concrete admixture provided by the invention, a functionalized modified nano graphene oxide solution is introduced into a polycarboxylate-type water reducing agent polymerization system, and copolymerization modification is carried out on nano graphene oxide through the bonding effect between a large number of oxygen-containing functional groups, thus the composite modified concrete admixture with better dispersity and more stable properties is obtained, meanwhile, the effects of filling, connecting and healing micropore cracks are achieved, the interface and binding power are enhanced, and the structural properties of bubbles in concrete are improved, so that the crack resistance and shrinkage reduction properties of concrete are improved.
本发明涉及建筑材料技术领域，特别涉及一种抗裂减缩型混凝土外加剂及其制备方法，其中一种抗裂减缩型混凝土外加剂，包括以下制备原料：不饱和聚氧乙烯醚单体、催化剂、丙烯酸、功能化改性纳米氧化石墨烯溶液、引发剂、链转移剂、不饱和酸、交联剂、季铵盐阳离子单体、还原剂。本发明提供的一种抗裂减缩型混凝土外加剂，在聚羧酸系减水剂聚合体系中引入功能化改性纳米氧化石墨烯溶液，通过大量含氧官能团之间的键合作用，使得其在纳米氧化石墨烯上发生共聚改性，得到分散性更好、性质更稳定的复合改性型混凝土外加剂，同时还起到填充、连接、愈合微孔裂缝作用，增强界面及粘结力，改善混凝土内部气泡结构性质，从而提高混凝土的抗裂减缩性能。
Anti-cracking shrinkage-reducing concrete admixture and preparation method thereof
The invention relates to the technical field of building materials, in particular to an anti-crack shrinkage-reducing type concrete admixture and a preparation method thereof. The concrete admixture comprises the following preparation raw materials: an unsaturated polyoxyethylene ether monomer, a catalyst, acrylic acid, a functionalized modified nano graphene oxide solution, an initiator, a chain transfer agent, unsaturated acid, a cross-linking agent, a quaternary ammonium salt cationic monomer and a reducing agent. According to the anti-cracking shrinkage-reducing concrete admixture provided by the invention, a functionalized modified nano graphene oxide solution is introduced into a polycarboxylate-type water reducing agent polymerization system, and copolymerization modification is carried out on nano graphene oxide through the bonding effect between a large number of oxygen-containing functional groups, thus the composite modified concrete admixture with better dispersity and more stable properties is obtained, meanwhile, the effects of filling, connecting and healing micropore cracks are achieved, the interface and binding power are enhanced, and the structural properties of bubbles in concrete are improved, so that the crack resistance and shrinkage reduction properties of concrete are improved.
本发明涉及建筑材料技术领域，特别涉及一种抗裂减缩型混凝土外加剂及其制备方法，其中一种抗裂减缩型混凝土外加剂，包括以下制备原料：不饱和聚氧乙烯醚单体、催化剂、丙烯酸、功能化改性纳米氧化石墨烯溶液、引发剂、链转移剂、不饱和酸、交联剂、季铵盐阳离子单体、还原剂。本发明提供的一种抗裂减缩型混凝土外加剂，在聚羧酸系减水剂聚合体系中引入功能化改性纳米氧化石墨烯溶液，通过大量含氧官能团之间的键合作用，使得其在纳米氧化石墨烯上发生共聚改性，得到分散性更好、性质更稳定的复合改性型混凝土外加剂，同时还起到填充、连接、愈合微孔裂缝作用，增强界面及粘结力，改善混凝土内部气泡结构性质，从而提高混凝土的抗裂减缩性能。
Anti-cracking shrinkage-reducing concrete admixture and preparation method thereof
一种抗裂减缩型混凝土外加剂及其制备方法
ZHU SHAOHONG (Autor:in) / FANG YUNHUI (Autor:in) / KE YULIANG (Autor:in) / ZHANG XIAOFANG (Autor:in) / ZHONG LINA (Autor:in) / LIN QIN (Autor:in) / LIN YANMEI (Autor:in) / LI GELI (Autor:in) / GUO YUANQIANG (Autor:in)
27.04.2021
Patent
Elektronische Ressource
Chinesisch
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