Development of a High-strength Single-component Hydrophobic Grouting Material
The prepolymers were synthesized by polymerization of different polyether polyols and polyisocyanates.A series of one-component hydrophobic chemical slurries was formulated by the prepolymer and less-volatile additives at room temperature.By comparing the compressive strength of cement formed by the reaction of grout injection with water,the influence of different raw materials on the construction technology(irrigation ability,expansion rate,etc.)was investigated.The results showed that the grouting material composed of prepolymer synthesized by pentaerythritol-polyether polyol and polymeric MDI,and diluted with the plasticizer DBP could meet the requirements of high strength and low viscosity.It was suitable for water conservancy,dam,mine,civil and other fields with high waterproof reinforcement requirements.
grouting materialpolyurethaneprepolymerconsolidating body
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NSTL
万方数据
维普
