Experimental Study on Mechanical Properties of Water Glass-Based Mud Solidified Soil
To solve the problem of sludge solidification and its resource utilization,Ningbo area sludge was taken as the research object,and water glass-based sludge solidification agent was used to prepare solidified soil.The mechanical properties of solidified soil were studied through indoor experiments,solidification mechanism analysis,and on-site experiments.The indoor experiment showed the variation of unconfined compressive strength and compressive modulus with the addition ratio of curing agent,and pointed out that there is an optimal addition ratio of 7%;The analysis of solidification mechanism shows that as the ratio of solidifying agent increases,the particles of solidified soil change from flake or block shaped to block shaped,and the volume of blocks shows an increasing trend.The porosity of solidified soil slightly increases,and the median pore size also slightly increases.The solidified soil changes from cohesive soil to powdery soil;The unconfined compressive strength of the soil sample obtained from on-site testing is about 70%of the indoor test value.The results indicate that the scheme of using water glass-based sludge solidification agent to reinforce silt soil is feasible.
geotechnical engineeringsolidification of sludgeunconfined compressive strengthcompression modulusload tests
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