Experimental study on impact resistance of steel-fiber-reinforced two-grade aggregate concrete

被引：16

作者：

Han, Juhong ^{[1
]}

Liu, Zheyuan ^{[1
]}

Zhang, Chaofan ^{[2
]}

机构：

[1] Zhengzhou Univ, Sch Water Conservancy & Civil Engn, Zhengzhou 450001, Peoples R China

[2] Shandong Yellow River Survey & Design Inst, Jinan 250013, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 373卷

关键词：

Two-grade aggregate concrete; Steel fiber; Impact resistance; Fractal dimension; Damage evolution equation; PULL-OUT BEHAVIOR; DISTRIBUTIONS; SIZE; SAND; SLAG;

D O I：

10.1016/j.conbuildmat.2023.130901

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study investigated the effect of steel fibers of different shapes (3D, 4D, and 5D) and volume contents (0 %, 0.5 %, 1.0 %, 1.5 %, and 2.0 %) on the impact resistance of the steel-fiber-reinforced two-grade aggregate concrete in its natural and saturated states. The results showed that the addition of steel fibers increased the impact energy of the two-grade aggregate concrete, and the improvement increased with the addition of steel fiber end hooks and the increase in the volume contents. Keeping the other conditions same, the impact energy in the saturated state was observed to reduce compared with that in the natural state. The fractal dimension of the steel-fiber-reinforced two-grade aggregate concrete exhibited an exponential relationship with the volume of the steel fiber and the impact energy. An impact damage evolution equation and life prediction model based on the two-parameter Weibull distribution were developed. The research results of this study extend the application of steel fibers to hydraulic structures.

引用

页数：13

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