A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Polycarboxylate superplasticizer suitable for machine-made sand concrete and preparation method thereof
The invention belongs to the field of building material admixtures, and particularly relates to a polycarboxylate superplasticizer suitable for machine-made sand concrete and a preparation method of the polycarboxylate superplasticizer. The polycarboxylic acid water reducing agent is prepared by compounding a C6 polycarboxylic acid water reducing agent mother solution with the solid content of 40%, a dispersing component and a viscosity-reducing and water-retaining component. The preparation method comprises the following steps: (1) carrying out free radical polymerization reaction on a C6 polycarboxylate superplasticizer mother solution with the solid content of 40%; and (2) mixing the prepared polycarboxylic acid mother liquor with a dispersing component, a viscosity-reducing water-retaining component and water, and uniformly stirring to obtain the product. When being applied to the machine-made sand concrete, the polycarboxylate superplasticizer has the advantages of high initial dispersing capacity, good workability and high slump retention capacity, and meanwhile, the mechanical property of the machine-made sand concrete can be improved. The problems of the machine-made sand residual flocculating agent and the compatibility of the machine-made sand residual flocculating agent and the polycarboxylic acid high-performance water reducing agent can be solved, the reaction time is short, and the energy consumption is low.
本发明属于建筑材料外加剂领域，尤其涉及一种适用于机制砂混凝土的聚羧酸减水剂及其制备方法。所述聚羧酸减水剂以固含量为40％的C6聚羧酸减水剂母液、分散组分、降粘保水组分复配而成。制备方法为：(1)固含量为40％的C6聚羧酸减水剂母液通过自由基聚合反应制得；(2)取上述制备的聚羧酸母液与分散组分、降粘保水组分、水混合，搅拌均匀即得产品。本发明的聚羧酸减水剂应用于机制砂混凝土时，具有初始分散能力强、和易性良好、坍落度保持能力强的优点，同时能够提高机制砂混凝土的力学性能。能够解决机制砂残留絮凝剂及其与聚羧酸高性能减水剂相容性出现的问题，且反应时间短、能耗低。
Polycarboxylate superplasticizer suitable for machine-made sand concrete and preparation method thereof
The invention belongs to the field of building material admixtures, and particularly relates to a polycarboxylate superplasticizer suitable for machine-made sand concrete and a preparation method of the polycarboxylate superplasticizer. The polycarboxylic acid water reducing agent is prepared by compounding a C6 polycarboxylic acid water reducing agent mother solution with the solid content of 40%, a dispersing component and a viscosity-reducing and water-retaining component. The preparation method comprises the following steps: (1) carrying out free radical polymerization reaction on a C6 polycarboxylate superplasticizer mother solution with the solid content of 40%; and (2) mixing the prepared polycarboxylic acid mother liquor with a dispersing component, a viscosity-reducing water-retaining component and water, and uniformly stirring to obtain the product. When being applied to the machine-made sand concrete, the polycarboxylate superplasticizer has the advantages of high initial dispersing capacity, good workability and high slump retention capacity, and meanwhile, the mechanical property of the machine-made sand concrete can be improved. The problems of the machine-made sand residual flocculating agent and the compatibility of the machine-made sand residual flocculating agent and the polycarboxylic acid high-performance water reducing agent can be solved, the reaction time is short, and the energy consumption is low.
本发明属于建筑材料外加剂领域，尤其涉及一种适用于机制砂混凝土的聚羧酸减水剂及其制备方法。所述聚羧酸减水剂以固含量为40％的C6聚羧酸减水剂母液、分散组分、降粘保水组分复配而成。制备方法为：(1)固含量为40％的C6聚羧酸减水剂母液通过自由基聚合反应制得；(2)取上述制备的聚羧酸母液与分散组分、降粘保水组分、水混合，搅拌均匀即得产品。本发明的聚羧酸减水剂应用于机制砂混凝土时，具有初始分散能力强、和易性良好、坍落度保持能力强的优点，同时能够提高机制砂混凝土的力学性能。能够解决机制砂残留絮凝剂及其与聚羧酸高性能减水剂相容性出现的问题，且反应时间短、能耗低。
Polycarboxylate superplasticizer suitable for machine-made sand concrete and preparation method thereof
一种适用于机制砂混凝土的聚羧酸减水剂及其制备方法
CHEN XINXIU (author) / DING XIAOCHUAN (author) / CHEN WEIDENG (author) / HUANG CHUNWEN (author) / XUE JUNPENG (author) / HE SONG (author) / WANG XIA (author) / LI BING (author)
2023-08-11
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
| European Patent Office | 2020
| European Patent Office | 2022
| European Patent Office | 2023