Determining double-K fracture parameters of concrete for compact tension and wedge splitting tests using weight function

被引：94

作者：

Kumar, Shailendra ^{[1
]}

Barai, S. V. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Civil Engn, Kharagpur 721302, W Bengal, India

来源：

ENGINEERING FRACTURE MECHANICS | 2009年 / 76卷 / 07期

关键词：

Mode-I concrete fracture; Compact tension test; Wedge splitting test; Double-K fracture parameters; Weight function; QUASI-BRITTLE FRACTURE; STRESS INTENSITY FACTORS; CRACK-PROPAGATION; PLAIN CONCRETE; CRITERION; COMPUTATION; TOUGHNESS; ENERGY; BEAMS;

D O I：

10.1016/j.engfracmech.2008.12.018

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The paper presents use of universal form of weight functions for determining the double-K fracture parameters K(IC)(ini) and K(IC)(un) on compact test and wedge splitting test specimens. The proposed method enables to obtain a closed form expression of cohesion toughness of concrete specimens. A comparison with existing analytical method shows that the weight function method for determination of double-K fracture parameters yields results without any appreciable error. Significant influence of initial notch to depth (a(0)/D) ratio on the double-K fracture parameters is not also observed. Finally. a possible definition of brittleness of concrete using double-K fracture parameters is proposed. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：935 / 948

页数：14

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