砾石颗粒干比重及饱和面干比重的估算方法——应用于最大干密度校正

ESTIMATION METHOD OF SATURATED SURFACE DRY SPECIFIC GRAVITY AND DRY SPECIFIC GRAVITY OF GRAVAL GRAIN FOR RECTIFYING MAXIMUM DRY DENSITY

砾石颗粒的饱和面干比重 ( Gs3 )、干比重 ( Gs2 )与其本身矿物成分、孔隙比、孔隙特征有着密切关系。文章提出了以砾石颗粒的饱和面干含水量及相应的粒径小于 5mm土粒的比重估算其 Gs3 ,Gs2 的方法 ,旨在简化土的最大干密度的校正工作。以该估算方法估算的 Gs3 或 Gs2 ,校正土的最大干密度 ,所产生的误差之绝对值小于 0 .0 1 g/cm3 ,对实际工程的影响是无关紧要的。

There is a close relation between saturated surface dry specific gravity(Gs 3),dry specific gravity(s 2) of graval grain and its mineral composition, and void ratio, and void feature. method is proposed to estimate Gs 3 or Gs 2 by use of saturated surface dry water content and corresponding specific gravity of particles whose diameter is smaller than 5 mm. The purpose is to simplify rectification of maximum dry density. The error of rectification by the present method is smaller than 0 01 g/cm 3, which is not important for practical projects.