EXPERIMENTAL METHOD TO DETERMINE EXTENSION OF FRACTURE-PROCESS ZONE

被引：51
|
作者：
Hu, Xiaozhi [1 ]
Wittmann, Folker H. [1 ]
机构：
[1] ETH Honggerberg, Lab Bldg Mat, Swiss Fed Inst Tech, CH-8093 Zurich, Switzerland
来源：
JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 1990年 / 2卷 / 01期
关键词：
D O I：
10.1061/(ASCE)0899-1561(1990)2:1(15)
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A multicutting technique is introduced, which can be used to determine the extension of the fracture-process zone together with the conventional compliance method. A new compliance curve is established from a damaged specimen during multicutting and compared with the compliance-calibration curve. From the comparison of these two compliance curves the extension of the fracture-process zone can be estimated. Experimental results of wedge-opening loaded specimens with a ligament length of 110 mm show that the length of the fracture-process zone in mortar varies from around 43 mm to 12 mm while the crack is approaching to the boundary. A relation between the length of the fracture-process zone and the shape of the K-r-curve is established.
引用
收藏
页码：15 / 23
页数：9
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