Influence of Different Industrial Waste Residues on Engineering Properties of High Liquid Limit Soil and Its Microscopic Mechanism

High liquid limit soil has unfavorable engineering geological characteristics, such as strong disintegration, dry shrinkage and easy cracking, uplift when encountering water, which will cause various problems to the engineering. At present, relationship between physical mechanical properties of high characteristics water-soil interaction is still not clear enough. In this study, Zhanjiang Avenue was selected explore influence different ratios three kinds industrial waste residues (blast furnace slag, carbide tailing sand) on soil. Aiming at common adverse phenomena soil, crack, in effects are explored through disintegration crack tests. addition, free expansion rate, pH, unconfined compressive strength, shear strength parameters were studied. The improvement mechanism discussed terms mineral composition microstructure. Based experimental results study considering cost practice, it suggested that modified slag optimal ratio 8%. can provide certain guidance for application achieve effect sustainable development.