Impact characterization and modelling of basalt-polypropylene fibrer-reinforced concrete containing mineral admixtures

被引：63
作者：
Fu, Qiang [1 ,2 ]
Niu, Ditao [1 ,2 ]
Li, Dan [2 ]
Wang, Yan [1 ,3 ]
Zhang, Jian [2 ]
Huang, Daguan [2 ]
机构：
[1] Xian Univ Architecture & Technol, State Key Lab Green Bldg Western China, Xian 710055, Shaanxi, Peoples R China
[2] Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Shaanxi, Peoples R China
[3] Xian Univ Architecture & Technol, Coll Mat & Mineral Resources, Xian 710055, Shaanxi, Peoples R China
来源：
CEMENT & CONCRETE COMPOSITES | 2018年 / 93卷
基金：
中国国家自然科学基金;
关键词：
Impact-resistance behaviour; Basalt fibre; Polypropylene fibre; Mineral admixtures; Strain rate effect; Viscoelastic damage constitutive model; HIGH PERFORMANCE CONCRETE; HIGH-STRAIN RATES; MECHANICAL-PROPERTIES; COMPRESSIVE BEHAVIOR; DYNAMIC STRENGTH; SILICA FUME; FIBER; STEEL; COMPOSITES; RESISTANCE;
D O I：
10.1016/j.cemconcomp.2018.07.019
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The impact-resistance behaviour of basalt-polypropylene fibre-reinforced concrete containing the mineral admixture (BPFRC) was experimentally investigated under impact loading using a phi 75 mm split-Hopkinson pressure bar. The results showed that the dynamic compressive strength, dynamic elastic modulus and critical strain of BPFRC increased with increasing strain rate. The addition of basalt fibre (BF) and polypropylene fibre (PF) yielded significant increases in the strain rate effect of the dynamic compressive strength and dynamic elastic modulus of concrete and improved the deformation capacity of concrete. The influence of PF on the strain rate effect of dynamic compressive strength of concrete was greater than that of BF. However, there was no clear difference between the influences of BF and PF on the strain rate effect of the dynamic elastic modulus of concrete. There was a significant positive correlation between the hybrid volume of fibre and the strain rate effect of the dynamic compressive mechanical behaviour of BPFRC. The proposed viscoelastic damage constitutive model in this study can be used to accurately describe the dynamic mechanical behaviour of BPFRC.
引用
收藏
页码：246 / 259
页数：14
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