Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Underwater polymer grouting liquid and preparation method thereof
The invention discloses underwater polymer grouting liquid and a preparation method thereof. The underwater polymer grouting liquid comprises the following raw materials in parts by weight: 60-80 parts of cement paste slurry and 20-30 parts of polyurethane slurry. According to the underwater polymer grouting liquid, a mixture of sulfate, formate and nitrate in a mass ratio of 0.8: 1: 0.5 is adopted as an accelerator. Most of traditional accelerators are mainly aluminate and carbonate and are high in alkalinity, and alkali-aggregate reaction is easily caused in the presence of strong alkali. The selected sulfate, formate and nitrate do not contain alkali and have a certain promotion effect on cement hydration, after the sulfate, the nitrate and the formate are compounded for use, the compressive strength of the cement paste within 4 hours reaches 7.93 MPa, the compressive strength of the cement paste within 24 hours reaches 39.56 MPa, the initial setting time of the cement paste is controlled within 150 seconds, the impact of water flow with a certain flow speed can be resisted, so that the grouting liquid can be used in an underwater environment.
本发明公开了一种水下高分子灌浆液及其制备方法，原料按重量份包括水泥膏浆60‑80份、聚氨酯浆液20‑30份。该水下高分子灌浆液，通过速凝剂采用硫酸盐、甲酸盐和硝酸盐以质量比为0.8:1:0.5的混合物，传统的速凝剂大多是以铝酸盐、碳酸盐为主，碱性较高，由于强碱的存在，很容易引起碱集料反应，选取的硫酸盐、甲酸盐和硝酸盐由于不含碱，而且对水泥水化有一定的促进作用，在采用硫酸盐、硝酸盐以及甲酸盐的复配使用后，水泥浆体的4h抗压强度达到7.93MPa，24h的抗压强度达到39.56MPa，并且水泥膏浆的初凝时间控制在150秒内，能够抵御一定流速的水流冲击，让灌浆液在水下环境可以进行使用。
Underwater polymer grouting liquid and preparation method thereof
The invention discloses underwater polymer grouting liquid and a preparation method thereof. The underwater polymer grouting liquid comprises the following raw materials in parts by weight: 60-80 parts of cement paste slurry and 20-30 parts of polyurethane slurry. According to the underwater polymer grouting liquid, a mixture of sulfate, formate and nitrate in a mass ratio of 0.8: 1: 0.5 is adopted as an accelerator. Most of traditional accelerators are mainly aluminate and carbonate and are high in alkalinity, and alkali-aggregate reaction is easily caused in the presence of strong alkali. The selected sulfate, formate and nitrate do not contain alkali and have a certain promotion effect on cement hydration, after the sulfate, the nitrate and the formate are compounded for use, the compressive strength of the cement paste within 4 hours reaches 7.93 MPa, the compressive strength of the cement paste within 24 hours reaches 39.56 MPa, the initial setting time of the cement paste is controlled within 150 seconds, the impact of water flow with a certain flow speed can be resisted, so that the grouting liquid can be used in an underwater environment.
本发明公开了一种水下高分子灌浆液及其制备方法，原料按重量份包括水泥膏浆60‑80份、聚氨酯浆液20‑30份。该水下高分子灌浆液，通过速凝剂采用硫酸盐、甲酸盐和硝酸盐以质量比为0.8:1:0.5的混合物，传统的速凝剂大多是以铝酸盐、碳酸盐为主，碱性较高，由于强碱的存在，很容易引起碱集料反应，选取的硫酸盐、甲酸盐和硝酸盐由于不含碱，而且对水泥水化有一定的促进作用，在采用硫酸盐、硝酸盐以及甲酸盐的复配使用后，水泥浆体的4h抗压强度达到7.93MPa，24h的抗压强度达到39.56MPa，并且水泥膏浆的初凝时间控制在150秒内，能够抵御一定流速的水流冲击，让灌浆液在水下环境可以进行使用。
Underwater polymer grouting liquid and preparation method thereof
一种水下高分子灌浆液及其制备方法
LI XINLAN (Autor:in) / LIN YINGXUE (Autor:in) / PENG LI (Autor:in)
31.08.2021
Patent
Elektronische Ressource
Chinesisch
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