Characteristics of tunnel slag powder and its influence on adsorption of polycarboxylate superplasticizer
ZHAO Shuang
WU Qingyong
WANG Wei
ZENG Luping
CHEN Junsong
QIAO Min
Abstract：The SEM,XRD,laser particle size analyzer,Zeta,and TOC organic carbon absorber were used,the particle morpholo-gy,particle gradation and mineral composition of tunnel slag powder under construction were tested,and its Zeta potential and su-perplasticizer adsorption performance were researched.The results show that the slag powder particles are irregularly shaped,angu-lar,and the particle size is different.Under the same sand making process,the specific surface area of basalt powder is the largest,and the quartz rock powder is the smallest.The absolute value of Zeta potential of quartz rock powder is the largest,and the basalt powder is the smallest.The adsorption rate of granite powder to superplasticizer is the largest,and the quartz rock pow-der is the smallest.The long side chain adsorption group superplasticizer has the largest adsorption rate in the tunnel slag powder,and the phosphate adsorption superplasticizer has the smallest adsorption rate.
Keywords：tunnel slagstone powdercharacteristicspolycarboxylate superplasticizeradsorption
Publication Date：2023-12-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 34-37,42 )