Journal Published Online: 12 December 2014
Volume 43, Issue 2

Experimental Study of the Effect of RCC Specimen Size and Crack Depth Ratio on Double-K Fracture Parameters

CODEN: JTEVAB

Abstract

When the height of roller compacted concrete (RCC) specimen is less than 400 mm, the specimen size and crack depth ratio will affect the double-K fracture parameters. In this paper, two groups of RCC specimens with different specimen size and crack depth ratio were investigated and the wedge splitting method was employed. Double-K fracture parameters were calculated employing the double-K fracture theory of concrete. It is indicated that when the crack depth ratio, α, increased from 0.4 to 0.6, the unstable fracture toughness, KICun, increases, while the initial fracture toughness, KICini, decreases. The crack depth ratio, α, has a continuous effect on KICini, however the effect on KICun decreases with the increase of α. When the height of the specimen, h, is less than 300 mm, the effect of specimen size on KICun is significant, but it decreases when h is greater than 300 mm and less than 500 mm.

Author Information

Cui, Xinzhuang
School of Civil Engineering, Shandong University, Jinan, Shandong, CN
Zhang, Jiong
School of Civil Engineering, Shandong University, Jinan, Shandong, CN
Hou, Fei
School of Civil Engineering, Shandong University, Jinan, Shandong, CN
Gao, Zhijun
School of Civil Engineering, Shandong University, Jinan, Shandong, CN
Wang, Zengtang
Weifang Highway Bureau of Luqiao Construction, Engineering Development Center, Weifang, Shandong, CN
Sui, Wei
School of Civil Engineering, Shandong University, Jinan, Shandong, CN
Pages: 8
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Details
Stock #: JTE20140025
ISSN: 0090-3973
DOI: 10.1520/JTE20140025