Experimental study on the strength characteristics of silty residue treated by granulation of slag combined with polycarboxylate superplasticizer
WANG Mingyuan
ZHUANG Junqi
CHEN Gang
SHEN Kunpeng
CAO Zhigang
Abstract：Uses slag,hydrated lime,and polycarboxylate water-reducing agent to solidify and granulate silty clay,achieving high-strength granulation of silty clay.The effects of the dosages of slag and water-reducing agent,as well as the curing time,on the products of the clay particles and the strength characteristics of the particles were analyzed.The experimental study shows that the slag and hydrated lime undergo a hydration reaction,and the products are amorphous gels such as C-S-H and C-A-S-H.These gels play a cementing role on the granulated particles and fill the pores between the particles,thus increasing the strength of the granulated soil particles.At the same time,the addition of an appropriate amount of polycarboxylate water-reducing agent can significantly improve the compactness of the particles.In addition,the solidified clay particles have the characteristic of early strength.The maximum strength can reach 2.0 MPa after 7-day curing.
Keywords：silty muckslagpolycarboxylate superplasticizercuring granulationsubgrade filling
Publication Date：2025-03-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 16-21 )