Mechanical properties of basalt fiber reinforced geopolymeric concrete under impact loading

作者：Li Weimin^*; Xu Jinyu

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2009, 505(1-2): 178-186.

DOI：10.1016/j.msea.2008.11.063

• Geopolymer
• Basalt fiber
• Impact properties
• Split Hopkinson pressure bar (SHPB)

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.

• 出版日期2009-4-15
• 单位中国人民解放军空军工程大学; 西北工业大学