superfine sand meaning in Chinese

超细砂

In the study , a new kind inorganic anchoring material was developed , which consisted of special binder and aggregate , the former is made from clinker , blast furnace slag and compound admixture , and the later is superfine sand . effects of the factors such as clinker / slag , binder / sand , solution / binder and constituent of solution on the strength , set - time and contraction of the matrix made from the anchoring material were studied
上述分析研究得出以下结论：新型无机锚固材料具有早强、快硬、高强特点， 10h .抗压强度可达26 . 5mpa ， 365天强度可达144 . 0mpa ；初凝时间在40min . 3h .之间,且初终凝时间差在15分钟以内；在保湿条件下具有微膨胀性，膨胀率在0 . 5 %以内。