Mechanical properties of basalt fiber reinforced geopolymeric concrete under impact loading

被引：266
作者：
Li, Weimin [1 ]
Xu, Jinyu [1 ,2 ]
机构：
[1] Air Force Engn Univ, Dept Airfield & Bldg Engn, Coll Engn, Xian 710038, Peoples R China
[2] Northwestern Polytech Univ, Sch Mech & Civil Architecture, Xian 710072, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 505卷 / 1-2期
关键词：
Geopolymer; Basalt fiber; Impact properties; Split Hopkinson pressure bar (SHPB); FLY-ASH; STRAIN-RATE; RESISTANCE; BEHAVIOR;
D O I：
10.1016/j.msea.2008.11.063
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Impact mechanical properties of basalt fiber reinforced geopolymeric concrete (BFRGC), including dynamic compressive strength. deformation and energy absorption capacity, were studied using a 100-mm-diameter split Hopkinson pressure bar (SHPB) system. For the valid SHPB tests on BFRGC specimens, the improved pulse shaping techniques were proposed to obtain dynamic stress equilibrium and nearly constant strain rate loading over most of the test durations. Impact properties of BFRGC exhibit strong strain rate dependency, and increase approximately linearly with the strain rate. The addition of basalt fiber can significantly improve deformation and energy absorption capacities of geopolymeric concrete (CC), while there is no notable improvement in dynamic compressive strength. In addition, the optimum volume fraction of basalt fiber was presented for BFRGC. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：178 / 186
页数：9
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