Crack propagation in concrete subjected to flexural-cyclic loading

被引：51

作者：

Toumi, A ^{[1
]}

Bascoul, A ^{[1
]}

Turatsinze, A ^{[1
]}

机构：

[1] Inst Natl Sci Appl, UPS, Lab Mat & Durabil Construct, F-31077 Toulouse, France

来源：

MATERIALS AND STRUCTURES | 1998年 / 31卷 / 211期

关键词：

D O I：

10.1007/BF02480468

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Fatigue tests were carried out on notched micro-concrete beams subjected to three-point bending tests in a saturated atmosphere. The feature of the crack growth was studied by means of the replica technique associated with scanning electron microscopy, in conjunction with the measurement of the crack mouth opening displacement (CMOD). Two domains must be distinguished in which the fatigue can be considered, depending on the upper boundary of the cyclic load. Beyond a given threshold for the upper boundary of the cyclic load, the first cycle induces an actual crack at the tip of the artificial notch. Observations of fatigue crack propagation are presented in that case and compared with previous investigations in static tests. The influence of the load level on the crack growth rate is discussed.

引用

页码：451 / 458

页数：8

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