Dynamic strength criteria for basalt fibre-reinforced coral aggregate concrete

被引：24

作者：

Fu, Qiang ^{[1
,2
]}

Xu, Wenrui ^{[1
]}

He, Jiaqi ^{[1
]}

Su, Li ^{[1
]}

Song, Hao ^{[3
]}

Niu, Ditao ^{[1
,2
]}

机构：

[1] Xian Univ Architecture & Technol, Sch Civil Engn, Xian 710055, Peoples R China

[2] Xian Univ Architecture & Technol, State Key Lab Green Bldg Western China, Xian 710055, Peoples R China

[3] Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China

来源：

COMPOSITES COMMUNICATIONS | 2021年 / 28卷

基金：

中国国家自然科学基金;

关键词：

Strength criterion; Strain rate; Cohesion; Internal friction angle; MECHANICAL-PROPERTIES; FLY-ASH; DURABILITY;

D O I：

10.1016/j.coco.2021.100983

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Based on dynamic triaxial experimental results for basalt fibre-reinforced coral aggregate concrete (BFRCAC), the dynamic Mohr-Coulomb (M - C), Hoek-Brown (H-B), and Drucker-Prager (D-P) strength criteria for BFRCAC are established. The results show that the dynamic strength of BFRCAC increases with an increase in the strain rate and confining pressure. The cohesion c of BFRCAC calculated using the M - C strength criterion increases, while the internal friction angle theta decreases with an increase in the strain rate. The parameter m of the H-B strength criterion decreases with the increase in the strain rate. The variations in the cohesive force cDP and internal friction angle 49DP of BFRCAC, as calculated using the D-P strength criterion, are consistent with the variations in c and 49. Through a comparison of the least mean standard deviation mismatch, the dynamic H-B strength criterion shows a higher calculation accuracy.

引用

页数：7

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