Effects of Testing Conditions on Intact Rock Strength and Variability

被引：12

作者：

Prakoso W.A. ^{[1
]}

Kulhawy F.H. ^{[2
]}

机构：

[1] Civil Engineering Department, University of Indonesia

[2] School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853-3501, Hollister Hall

来源：

Geotechnical and Geological Engineering | 2011年 / 29卷 / 1期

关键词：

Moisture content; Rock strength correlation; Rock strength properties; Sample diameter; Variability;

D O I：

10.1007/s10706-010-9356-y

中图分类号：

学科分类号：

摘要：

The strength of intact rock is a fundamental and integral part of many aspects of engineering and geologic practice. It is necessary to understand how testing conditions influence this strength and its variability, especially for use in reliability-based design. In this study, the effect of sample diameter and moisture content on the strength and its variability was examined in detail. Correlations are given for assessing the effect of sample diameter on the laboratory uniaxial compressive strength (qu), Brazilian indirect tensile strength (qt-Brazilian), and point load strength (Is), and the associated direct correlations among these tests. Correlations also are given for assessing the effect of sample moisture content on qu, qt-Brazilian, and Is. The statistics of data scatter suggest these correlations can introduce large uncertainties. The effect of sample diameter and moisture content on the coefficients of variation was examined subsequently, and it was found to be relatively minor. © 2010 Springer Science+Business Media B.V.

引用

页码：101 / 111

页数：10

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