Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Super plasticizer for pumping prefabricated part concrete and preparation method and application of super plasticizer
The invention provides a super plasticizer for pumping prefabricated part concrete. The super plasticizer is prepared by free radical copolymerization reaction of a monomer a, a monomer b, a monomer c and a modified monomer d, wherein the modified monomer d is prepared by reaction of the monomer d and nano SiO2; and the viscosity-average molecular weight of the super plasticizer is 30000-80000. The invention further provides a preparation method of the super plasticizer, and an application of the super plasticizer in improvement of the early strength of cement-based materials. The super plasticizer is simple in preparation process, convenient to use and low in cost; the super plasticizer for pumping the prefabricated part concrete is synthesized by a high molecular weight polyether monomer, reactive nanosilicon dioxide, a carboxylic monomer and a hydroxyl monomer; the super plasticizer has the functions of reducing water, retaining slump and improving early strength; the early hydration process of cement can be accelerated; the early strength of the cement-based materials is improved; and the super plasticizer has significant slump holding capacity, and can meet the pumping requirements of the prefabricated part concrete.
Super plasticizer for pumping prefabricated part concrete and preparation method and application of super plasticizer
The invention provides a super plasticizer for pumping prefabricated part concrete. The super plasticizer is prepared by free radical copolymerization reaction of a monomer a, a monomer b, a monomer c and a modified monomer d, wherein the modified monomer d is prepared by reaction of the monomer d and nano SiO2; and the viscosity-average molecular weight of the super plasticizer is 30000-80000. The invention further provides a preparation method of the super plasticizer, and an application of the super plasticizer in improvement of the early strength of cement-based materials. The super plasticizer is simple in preparation process, convenient to use and low in cost; the super plasticizer for pumping the prefabricated part concrete is synthesized by a high molecular weight polyether monomer, reactive nanosilicon dioxide, a carboxylic monomer and a hydroxyl monomer; the super plasticizer has the functions of reducing water, retaining slump and improving early strength; the early hydration process of cement can be accelerated; the early strength of the cement-based materials is improved; and the super plasticizer has significant slump holding capacity, and can meet the pumping requirements of the prefabricated part concrete.
Super plasticizer for pumping prefabricated part concrete and preparation method and application of super plasticizer
RAN QIANPING (Autor:in) / LIU JINZHI (Autor:in) / YANG YONG (Autor:in) / SHU XIN (Autor:in) / ZHANG JIAN GANG (Autor:in) / MAO YONGLIN (Autor:in) / LIU JIAPING (Autor:in)
29.04.2015
Patent
Elektronische Ressource
Englisch
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