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A platform for research: civil engineering, architecture and urbanism
Concrete water-retaining agent and preparation method thereof
The invention relates to the technical field of concrete admixtures, and particularly discloses a concrete water-retaining agent and a preparation method thereof. The concrete water-retaining agent is prepared from the following raw materials: 7 to 11 parts of boehmite, 3 to 5 parts of glutamic acid, 7 to 11 parts of cellulose, 10 to 14 parts of white carbon black, 0.5 to 1.1 parts of silane coupling agent, 4 to 8 parts of maltodextrin and 30 to 50 parts of water. The preparation method comprises the following steps: S1, adding boehmite and cellulose into water, blending, adding glutamic acid, stirring and heating to 70-90 DEG C, reacting for 4 hours, adding white carbon black and isobutyltriethoxysilane while stirring, keeping the constant temperature of 70 DEG C, reacting for 20 minutes, and cooling to room temperature to obtain a mixture A; s2, mixing the mixture A obtained in the step S1, maltodextrin, a polyether modified organic silicon defoaming agent and the rest of water, continuously keeping the temperature at 70-90 DEG C, heating and stirring for 30 minutes, and cooling to room temperature, so as to obtain the water-retaining agent. The concrete water-retaining agent has the advantage of improving the hardness of concrete added with the water-retaining agent.
本申请涉及混凝土外加剂技术领域，具体公开了一种混凝土保水剂及其制备方法。一种混凝土保水剂的原料包括勃姆石7‑11份、谷氨酸3‑5份、纤维素7‑11份、白炭黑10‑14份、硅烷偶联剂0.5‑1.1份、麦芽糊精4‑8份和水30‑50份；其制备方法为：S1：取勃姆石和纤维素加入水中共混后加入谷氨酸，搅拌加热到70‑90℃反应4h，再向其中加入边搅拌边加入白炭黑和异丁基三乙氧基硅烷，保持恒温70℃反应20min，冷却至室温得到混合物A；S2：将S1中得到的混合物A、麦芽糊精、聚醚改性有机硅消泡剂以及剩余的水混合继续保持70‑90℃加热搅拌30min后，冷却至室温制得保水剂。其具有提高添加保水剂的混凝土硬度的优点。
Concrete water-retaining agent and preparation method thereof
The invention relates to the technical field of concrete admixtures, and particularly discloses a concrete water-retaining agent and a preparation method thereof. The concrete water-retaining agent is prepared from the following raw materials: 7 to 11 parts of boehmite, 3 to 5 parts of glutamic acid, 7 to 11 parts of cellulose, 10 to 14 parts of white carbon black, 0.5 to 1.1 parts of silane coupling agent, 4 to 8 parts of maltodextrin and 30 to 50 parts of water. The preparation method comprises the following steps: S1, adding boehmite and cellulose into water, blending, adding glutamic acid, stirring and heating to 70-90 DEG C, reacting for 4 hours, adding white carbon black and isobutyltriethoxysilane while stirring, keeping the constant temperature of 70 DEG C, reacting for 20 minutes, and cooling to room temperature to obtain a mixture A; s2, mixing the mixture A obtained in the step S1, maltodextrin, a polyether modified organic silicon defoaming agent and the rest of water, continuously keeping the temperature at 70-90 DEG C, heating and stirring for 30 minutes, and cooling to room temperature, so as to obtain the water-retaining agent. The concrete water-retaining agent has the advantage of improving the hardness of concrete added with the water-retaining agent.
本申请涉及混凝土外加剂技术领域，具体公开了一种混凝土保水剂及其制备方法。一种混凝土保水剂的原料包括勃姆石7‑11份、谷氨酸3‑5份、纤维素7‑11份、白炭黑10‑14份、硅烷偶联剂0.5‑1.1份、麦芽糊精4‑8份和水30‑50份；其制备方法为：S1：取勃姆石和纤维素加入水中共混后加入谷氨酸，搅拌加热到70‑90℃反应4h，再向其中加入边搅拌边加入白炭黑和异丁基三乙氧基硅烷，保持恒温70℃反应20min，冷却至室温得到混合物A；S2：将S1中得到的混合物A、麦芽糊精、聚醚改性有机硅消泡剂以及剩余的水混合继续保持70‑90℃加热搅拌30min后，冷却至室温制得保水剂。其具有提高添加保水剂的混凝土硬度的优点。
Concrete water-retaining agent and preparation method thereof
一种混凝土保水剂及其制备方法
SHEN CONGRUI (author) / ZHAO YANI (author) / XU YINGJIE (author) / SHAO WEIZHAO (author) / YANG SE-GOO (author)
2023-05-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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