THE EFFECTS OF ADMIXTURES ON THE PERFORMANCE OF GROUTING MATERIALS FOR SLEEVES
To comprehensively study the effects of early-strength agents,defoamers,and expanders on the flowabili-ty,compressive strength,expansion rate,and 28 day morphology of grouting materials for sleeves,a single control variable method was employed to sequentially investigate the impacts of different additives and their varying dosages on these grouting materials.The results indicate that,except for plastic expanders,other additives negatively affect the flowability while positively influencing the compressive strength.The plastic expander causes vertical expansion during the plastic phase,while UEA compensates for late-stage expansion,along with the effects of both expanders on the 28 day microstructure of the grouting material.This research provides technical references for material devel-opers.
万方数据
维普
