Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-adaptability polycarboxylic acid water reducing agent for sprayed concrete and preparation method of high-adaptability polycarboxylic acid water reducing agent
The invention relates to a high-adaptability polycarboxylic acid water reducing agent for sprayed concrete and a preparation method thereof, and the high-adaptability polycarboxylic acid water reducing agent comprises the following raw materials in parts by weight: 180-200 parts of a polyether macromonomer, 13-25 parts of unsaturated acid, 5-10 parts of an acrylamide functional monomer, 1.0-2.5 parts of an oxidant, 0.15-0.6 part of a reducing agent, 0.5-1.5 parts of a chain transfer agent and 200-240 parts of water. The water reducing agent is low in mixing amount in sprayed concrete, high in water reducing rate, good in fluidity and easy to spray; the concrete is short in setting time and high in strength, and springback of sprayed concrete can be effectively reduced; and the sensitivity to the spraying environment temperature and the sand rate change of the sprayed concrete is low, the adaptability is good, and the technical service amount of the sprayed concrete can be effectively reduced.
本发明涉及一种高适应性喷射混凝土用聚羧酸减水剂及其制备方法，以重量份数计，其原材料包括聚醚大单体180～200份，不饱和酸13～25份，丙烯酰胺类功能单体5～10份，氧化剂1.0～2.5份，还原剂0.15～0.6份，链转移剂0.5～1.5份，水200～240份。本发明减水剂在喷射混凝土中掺量低，减水率高，流动性好，易于喷射；混凝土凝结时间快，强度高，能有效降低喷射混凝土回弹；且对喷射环境温度及喷射混凝土砂率变化的敏感性低，适应性好，能有效降低喷射混凝土的技术服务量。
High-adaptability polycarboxylic acid water reducing agent for sprayed concrete and preparation method of high-adaptability polycarboxylic acid water reducing agent
The invention relates to a high-adaptability polycarboxylic acid water reducing agent for sprayed concrete and a preparation method thereof, and the high-adaptability polycarboxylic acid water reducing agent comprises the following raw materials in parts by weight: 180-200 parts of a polyether macromonomer, 13-25 parts of unsaturated acid, 5-10 parts of an acrylamide functional monomer, 1.0-2.5 parts of an oxidant, 0.15-0.6 part of a reducing agent, 0.5-1.5 parts of a chain transfer agent and 200-240 parts of water. The water reducing agent is low in mixing amount in sprayed concrete, high in water reducing rate, good in fluidity and easy to spray; the concrete is short in setting time and high in strength, and springback of sprayed concrete can be effectively reduced; and the sensitivity to the spraying environment temperature and the sand rate change of the sprayed concrete is low, the adaptability is good, and the technical service amount of the sprayed concrete can be effectively reduced.
本发明涉及一种高适应性喷射混凝土用聚羧酸减水剂及其制备方法，以重量份数计，其原材料包括聚醚大单体180～200份，不饱和酸13～25份，丙烯酰胺类功能单体5～10份，氧化剂1.0～2.5份，还原剂0.15～0.6份，链转移剂0.5～1.5份，水200～240份。本发明减水剂在喷射混凝土中掺量低，减水率高，流动性好，易于喷射；混凝土凝结时间快，强度高，能有效降低喷射混凝土回弹；且对喷射环境温度及喷射混凝土砂率变化的敏感性低，适应性好，能有效降低喷射混凝土的技术服务量。
High-adaptability polycarboxylic acid water reducing agent for sprayed concrete and preparation method of high-adaptability polycarboxylic acid water reducing agent
一种高适应性喷射混凝土用聚羧酸减水剂及其制备方法
DENG LEI (Autor:in) / JIANG YU (Autor:in) / ZHANG BO (Autor:in) / CHEN WENHONG (Autor:in) / YANG DIE (Autor:in) / LYU CHANGWEI (Autor:in) / HUANG XIAOWEN (Autor:in)
17.09.2024
Patent
Elektronische Ressource
Chinesisch
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