SEM INVESTIGATIONS OF FRACTURE SURFACES USING STEREO PAIRS .1. FRACTURE SURFACES OF ROCK AND OF CEMENT PASTE

被引：22

作者：

DIAMOND, S ^{[1
]}

MINDESS, S ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,VANCOUVER V6T 1Z4,BC,CANADA

来源：

CEMENT AND CONCRETE RESEARCH | 1992年 / 22卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0008-8846(92)90137-K

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Stereo pair imaging in a scanning electron microscope was used to document details of the topography of fracture surfaces at various degrees of magnification. The fracture surfaces investigated had been produced by fracture testing of chevron notched beam specimens according to ISRM Method 1. The procedure involved loading in a very stiff machine to the point of initial deviation from linearity, unloading, and reloading repetitively until failure. Specimens were prepared and examined from dolomite and andesite rock used commercially for concrete aggregates, and from cement paste with and without silica fume. Various topographic features of the fracture surfaces are described.

引用

页码：67 / 78

页数：12