Experimental Research On The Weatherability Resistance Of New Material Based On MICP

Nowdays,the landing demand of people is growing with the development of urbanization.Traditional chemical grouting methods and chemical curing agents adversely affect the environment.At present,the use of microbial induced mineralization technology to generate a new green that non-polluting new materials are emerging is the use of microbial metabolic effects of the sand in the environment consolidation.The new material is being studied and developed gradually,and the application of this mineralization.The improvement and foundation treatment of the land desertification and soil erosion may bring enormous environmental and economic benefits in the future.With the change of season,this kind of microbial under different ecological environment induce mineralization of geotextile material weathering challenges.Acid rain,freeze-thaw resistance,resistance to dry and wet performance of the new materials is important material weathering performance content.A series of studies on the weathering performance of the material provide theoretical and experimental basis for the application and popularization of this material in the future.This test includes that permeability coefficient quality loss and changes in water content determine the optimum curing time for such synthetic mineralized geotextiles.Mechanics experiment on the microbial induced mineralization of geotechnical materials acid rain test and resistant to freezing and thawing and resistant to dry and wet and a series of experimental studies were conducted.The results showed that the optimum curing time for bacterial-induced mineralized materials for standard sand as base soil is 7 days.MICP-standard sand samples produced after microbial mineralization have a certain strength,permeability is much greater than the permeability of concrete with a higher moisture content.MICP-Standard sand samples have poor acid rain resistance with acidity increased acidity and the decreased acid resistance of the material.The material is resistant to freezing and poor resistance to dry and wet damage with chloride in the environment improves the frost resistance of the material.The presence of chlorine and sodium sulfate in the environment reduces the wettability of the material.