A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Desert sand concrete special polycarboxylate superplasticizer and preparation method thereof, and desert sand concrete
The invention relates to the technical field of concrete admixtures, in particular to a special polycarboxylic acid water reducing agent for desert sand concrete, a preparation method of the special polycarboxylic acid water reducing agent and the desert sand concrete. The polycarboxylate superplasticizer is formed by polymerizing a modified polyether macromonomer and unsaturated carboxylic acid and/or anhydride through a free radical polymerization reaction. The polycarboxylic acid water reducing agent can adapt to corresponding characteristics of desert sand concrete, is applied to preparation of the desert sand concrete, can reduce the viscosity of desert sand concrete slurry, improve the water reducing rate and improve the strength of the obtained desert sand concrete, and can have a good anti-mud effect and a high water reducing rate under the condition of a relatively low mixing amount of the water reducing agent. According to the invention, the manufacturing cost of the desert sand concrete can be reduced, the defects of large water reducing agent dosage, high concrete manufacturing cost and poor concrete strength caused by poor effect of a traditional polycarboxylic acid water reducing agent when the traditional polycarboxylic acid water reducing agent is applied to preparation of the desert sand concrete are overcome, and the application obstacles when desert sand is introduced into concrete preparation instead of industrial sand are reduced; the problem of shortage of industrial sand in the industry is relieved.
本发明涉及混凝土外加剂技术领域，特别涉及一种沙漠砂混凝土专用聚羧酸减水剂及其制备方法、沙漠砂混凝土。该聚羧酸减水剂由改性聚醚大单体与不饱和羧酸和/或酸酐经自由基聚合反应聚合而成。该聚羧酸减水剂可适应沙漠砂混凝土的相应特性，应用于沙漠砂混凝土制备中，能够降低沙漠砂混凝土浆料粘度，提高减水率，提升获得的沙漠砂混凝土的强度，在较低减水剂掺量下即可具有良好的抗泥效果和高减水率。本发明能降低沙漠砂混凝土制造成本，解决传统聚羧酸减水剂应用于制备沙漠砂混凝土时效果不佳而造成的减水剂掺量大、混凝土制造成本高、混凝土强度不佳的缺陷，减少沙漠砂替代工业砂引入混凝土制备时的应用障碍，缓解行业中工业砂的短缺问题。
Desert sand concrete special polycarboxylate superplasticizer and preparation method thereof, and desert sand concrete
The invention relates to the technical field of concrete admixtures, in particular to a special polycarboxylic acid water reducing agent for desert sand concrete, a preparation method of the special polycarboxylic acid water reducing agent and the desert sand concrete. The polycarboxylate superplasticizer is formed by polymerizing a modified polyether macromonomer and unsaturated carboxylic acid and/or anhydride through a free radical polymerization reaction. The polycarboxylic acid water reducing agent can adapt to corresponding characteristics of desert sand concrete, is applied to preparation of the desert sand concrete, can reduce the viscosity of desert sand concrete slurry, improve the water reducing rate and improve the strength of the obtained desert sand concrete, and can have a good anti-mud effect and a high water reducing rate under the condition of a relatively low mixing amount of the water reducing agent. According to the invention, the manufacturing cost of the desert sand concrete can be reduced, the defects of large water reducing agent dosage, high concrete manufacturing cost and poor concrete strength caused by poor effect of a traditional polycarboxylic acid water reducing agent when the traditional polycarboxylic acid water reducing agent is applied to preparation of the desert sand concrete are overcome, and the application obstacles when desert sand is introduced into concrete preparation instead of industrial sand are reduced; the problem of shortage of industrial sand in the industry is relieved.
本发明涉及混凝土外加剂技术领域，特别涉及一种沙漠砂混凝土专用聚羧酸减水剂及其制备方法、沙漠砂混凝土。该聚羧酸减水剂由改性聚醚大单体与不饱和羧酸和/或酸酐经自由基聚合反应聚合而成。该聚羧酸减水剂可适应沙漠砂混凝土的相应特性，应用于沙漠砂混凝土制备中，能够降低沙漠砂混凝土浆料粘度，提高减水率，提升获得的沙漠砂混凝土的强度，在较低减水剂掺量下即可具有良好的抗泥效果和高减水率。本发明能降低沙漠砂混凝土制造成本，解决传统聚羧酸减水剂应用于制备沙漠砂混凝土时效果不佳而造成的减水剂掺量大、混凝土制造成本高、混凝土强度不佳的缺陷，减少沙漠砂替代工业砂引入混凝土制备时的应用障碍，缓解行业中工业砂的短缺问题。
Desert sand concrete special polycarboxylate superplasticizer and preparation method thereof, and desert sand concrete
一种沙漠砂混凝土专用聚羧酸减水剂及其制备方法、沙漠砂混凝土
SHEN QIANG (author) / LIN YANMEI (author)
2024-11-29
Patent
Electronic Resource
Chinese
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