Preparation and performance study of high strength wind power grouting material
In this paper,proportioning A,B and C of high strength wind power grouting material with compressive strength of 120 MPa,130 MPa and 140 MPa were designed and formulated,and their properties were studied.The research results showed that:The key indicators such as flowability,compressive strength,and vertical expansion rate of proportioning A,B,and C can meet the design requirements.To ensure the good construction performance and micro expansion performance of the grouting material,the dosage of powder water reducing agent should not be less than 0.5%,and the dosage of plastic expansion agent should not be less than 0.024%.The working and mechanical properties of proportioning B at different temperatures were studied,and the results showed that:As the temperature increases,the initial fluidity of the wind power grouting material gradually decreases,and the loss of fluidity of the grouting material gradually increases.The wind power grouting material cured in a 10℃ environment has an impact on the compressive strength of each age group.When cured at 30℃,40℃,and 50℃,the compressive strength of each age group has a certain increase,with low or high temperatures having the greatest impact on the 1-day age group.To ensure the construction performance of the grouting material,the construction environment temperature should not exceed 40℃ and should not be lower than 10℃,otherwise cooling or insulation measures need to be taken.
wind power grouting materialfluiditymechanical propertiesenvironment temperature
万方数据
维普
