Optimization of mixture design of solidification admixtures for beach silt and its strength study
In order to improve the resource utilization rate of mudflat sludge,the engineering availability of mudflat sludge can be improved by adding a curing agent prepared by cement,slag,gypsum,etc.according to a certain mix proportion.Explored the solidification effect of curing agents using cement,slag,and gypsum as raw materials.The results indicated that the solidification a-gent with the optimal mechanical performance contains a cement-slag-gypsum ratio of 22.5%-70%-7.5%.In the case of 20%opti-mal solidification agent,the unconfined compressive strength of beach silt after curing for 3 days,7 days and 28 days is 1.51 MPa,2.03 MPa and 3.37 MPa,respectively.Micro-analysis result shows that the hydration products in the solidification agent are com-bined with silt particles to improve the overall compressive strength.Moreover,solidification agent can effectively improve the engi-neering availability of beach silt and take into account the engineering economy at the same time.
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维普
