摘要
为探究氯盐腐蚀后混凝土动力学特性,利用Φ100 mm分离式霍普金森压杆试验系统,对置于NaCl溶液中浸泡侵蚀后混凝土试件动力学特性进行研究。试验结果表明:氯盐腐蚀后试件动态抗压强度明显下降,且应变率效应显著;整体上,试件受腐蚀后的峰值应变有所降低,变形性能减弱;比能量吸收显著降低,吸能能力受到严重削弱。说明氯盐对混凝土动力学特性具有显著的弱化效应。
Dynamic characteristic damage of concrete specimens which have been immersed in sodium chloride solution were studied by 100 mm split Hopkinson pressure bar（ SHPB） test device. The results show that there were different decreases to the dynamic compressive strength of the concrete that after immersed and it has a distinguishable strain rate effect. The peak strain of specimens immersed has a bit reduction with reduced deformation performance as a whole. The specific energy absorption has a significant drop after concrete specimens etched and energy absorption capability is severely weaken,which indicates that weakening effect of the dynamic mechanical properties of concrete is obvious.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2017年第2期589-594,共6页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金资助项目(51078350
51208507)
爆炸冲击防灾减灾国家重点实验室开放课题资助(DPMEIKF201406)
陕西省青年科技新星计划项目(2013KJXX-81)
关键词
分离式霍普金森压杆
动态抗压强度
峰值应变
比能量吸收
split Hopkinson pressure bar（SHPB）
dynamic compressive strength
peak strain
specific energy absorption
