Study on the Influence Factors of Dry Shrinkage of New Ultra-Early Strength Phosphate Repairing Material Mortar
[Purposes]This paper studies the influence factors of dry shrinkage phosphate repair materi-als.[Methods]Through the mortar test,the effects of borax content,water-binder ratio,fly ash content,mortar ratio and aggregate type on the dry shrinkage rate of phosphate repair materials were studied.[Findings]The results showed that the greater the borax content,the greater the ratio of cement to sand,the greater the water-cement ratio,the greater the dry shrinkage of cement sand;the mortar shrinkage value of quartz sand is smaller than that of steel slag,and the addition of appropriate fly ash could reduce the dry shrinkage of phosphate repair materials.[Conclusions]The research results can provide basis and reference for the mix ratio design of phosphate repair materials.
万方数据
维普
