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A platform for research: civil engineering, architecture and urbanism
Concrete water-retaining agent and preparation method thereof
The invention provides a concrete water-retaining agent and a preparation method thereof. The concrete water-retaining agent is prepared from the following raw materials in parts by weight: 60 to 80 parts of polyacrylamide, 20 to 28 parts of 2-acrylamide-2-methylpropanesulfonic acid high-molecular polymer, 14 to 22 parts of cellulose ether, 18 to 26 parts of castor oil polyoxyethylene ether, 14 to 20 parts of silane coupling agent, 20 to 32 parts of montmorillonite, 25 to 30 parts of diatomite, 12 to 18 parts of sodium hydroxide solution and 18 to 26 parts of water-soluble latex powder. According to the invention, polyacrylamide is compounded with montmorillonite and diatomite to form a uniform and stable protective film with a net structure, and the protective film has a synergistic effect with raw materials such as 2-acrylamide-2-methylpropanesulfonic acid high-molecular polymer and the like to form a stable suspension system, so that an effective water retention effect on concrete is achieved; the loss of free water in the concrete is reduced, the cracking degree of the concrete is effectively reduced, and the montmorillonite and the diatomite can permeate into the concrete to fill gaps of the concrete, so that the compactness of the concrete is improved, the strength of the concrete is effectively improved, and the cracking of the concrete is reduced.
本发明提供一种混凝土保水剂及其制备方法。该混凝土保水剂包括以下重量份的原料：聚丙烯酰胺60～80份、2‑丙烯酰胺‑2‑甲基丙磺酸高分子聚合物20～28份、纤维素醚14～22份、蓖麻油聚氧乙烯醚18～26份、硅烷偶联剂14～20份、蒙脱土20～32份、硅藻土25～30份、氢氧化钠溶液12～18份、水溶性乳胶粉18～26份。本发明通过将聚丙烯酰胺与蒙脱土、硅藻土进行复合，能够形成均一稳定的网状结构保护膜，并且与2‑丙烯酰胺‑2‑甲基丙磺酸高分子聚合物等原料协同作用，能够形成稳定的悬浮体系，从而对混凝土起到有效的保水作用，减少混凝土中自由水的流失，有效降低混凝土的开裂程度，并且蒙脱土和硅藻土能够渗透到混凝土中对混凝土的空隙进行填充，提高混凝土的密实性，有效提高混凝土的强度，从而减少混凝土开裂。
Concrete water-retaining agent and preparation method thereof
The invention provides a concrete water-retaining agent and a preparation method thereof. The concrete water-retaining agent is prepared from the following raw materials in parts by weight: 60 to 80 parts of polyacrylamide, 20 to 28 parts of 2-acrylamide-2-methylpropanesulfonic acid high-molecular polymer, 14 to 22 parts of cellulose ether, 18 to 26 parts of castor oil polyoxyethylene ether, 14 to 20 parts of silane coupling agent, 20 to 32 parts of montmorillonite, 25 to 30 parts of diatomite, 12 to 18 parts of sodium hydroxide solution and 18 to 26 parts of water-soluble latex powder. According to the invention, polyacrylamide is compounded with montmorillonite and diatomite to form a uniform and stable protective film with a net structure, and the protective film has a synergistic effect with raw materials such as 2-acrylamide-2-methylpropanesulfonic acid high-molecular polymer and the like to form a stable suspension system, so that an effective water retention effect on concrete is achieved; the loss of free water in the concrete is reduced, the cracking degree of the concrete is effectively reduced, and the montmorillonite and the diatomite can permeate into the concrete to fill gaps of the concrete, so that the compactness of the concrete is improved, the strength of the concrete is effectively improved, and the cracking of the concrete is reduced.
本发明提供一种混凝土保水剂及其制备方法。该混凝土保水剂包括以下重量份的原料：聚丙烯酰胺60～80份、2‑丙烯酰胺‑2‑甲基丙磺酸高分子聚合物20～28份、纤维素醚14～22份、蓖麻油聚氧乙烯醚18～26份、硅烷偶联剂14～20份、蒙脱土20～32份、硅藻土25～30份、氢氧化钠溶液12～18份、水溶性乳胶粉18～26份。本发明通过将聚丙烯酰胺与蒙脱土、硅藻土进行复合，能够形成均一稳定的网状结构保护膜，并且与2‑丙烯酰胺‑2‑甲基丙磺酸高分子聚合物等原料协同作用，能够形成稳定的悬浮体系，从而对混凝土起到有效的保水作用，减少混凝土中自由水的流失，有效降低混凝土的开裂程度，并且蒙脱土和硅藻土能够渗透到混凝土中对混凝土的空隙进行填充，提高混凝土的密实性，有效提高混凝土的强度，从而减少混凝土开裂。
Concrete water-retaining agent and preparation method thereof
一种混凝土保水剂及其制备方法
ZHOU FEN (author) / MA SHUANGPING (author) / ZHU HUAXIONG (author)
2024-10-22
Patent
Electronic Resource
Chinese
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