Dynamic properties of microfine cement grouted sands

被引：47

作者：

Pantazopoulos, I. A. ^{[1
]}

Atmatzidis, D. K. ^{[1
]}

机构：

[1] Univ Patras, Dept Civil Engn, Geotech Engn Lab, GR-26500 Patras, Greece

来源：

SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2012年 / 42卷

关键词：

ELEMENT; MODULUS;

D O I：

10.1016/j.soildyn.2012.05.017

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Torsional resonant column and bender element tests were conducted on microfine and ordinary cement grouted sands and the effects of confining pressure, shear strain, grout water-to-cement (W/C) ratio, cement type and gradation on the dynamic properties were evaluated. The shear and initial Young's moduli of the grouted sands increased with increasing confining pressure and decreasing shear strain, while damping ratio had the opposite behavior. The grout W/C ratio had the strongest effect on the values of the dynamic properties of the grouted sands, followed by cement grain size and cement pozzolan content. Depending on grout W/C ratio and confining pressure, the shear and initial Young's moduli values and the damping ratio values of the clean sands were improved by a factor of 4-25 and 2-6, respectively. The effect of testing conditions or material parameters on the Poisson ratio values of the grouted sands was negligible. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：17 / 31

页数：15

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