摘要
为了研究冻融循环周次对陶粒混凝土动态力学性能的影响,对含有页岩陶粒体积分数为0%、15%、30%、45%的陶粒混凝土试样分别进行0、10、20、30和40次的冻融循环后SHPB动态压缩实验.实验表明:陶粒混凝土的动态力学性能随着冻融循环周次增加而弱化,动态压缩强度随着应变率的增加而增大,并给出了冻融循环周次对陶粒混凝土动态压缩强度的变化规律.
The effect of freeze-thaw cycles on dynamic mechanical properties of the ceramsite concrete is studied. Four groups of the specimens with different ceramsite volume fraction including 0%, 15%, 30% and 45%, each of which experiences 0, 10, 20, 30 and 40 cycles of freeze-thaw, are tested using SHPB device. The experimental results show that the dynamic behaviors of ceramisite concrete decrease along with the increasing number of freeze-thaw cycles, and the dynamic compressive strength increase along with the increase of strain rate. Finally, the relationship between the dynamic compressive strength of the concrete and freeze-thaw cycles is established.
出处
《宁波大学学报（理工版）》
CAS
2015年第3期74-77,共4页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
国家自然科学基金(10972109
11272165)
关键词
陶粒
混凝土
SHPB
冻融循环
动态力学性能
ceramsite
concrete
SHPB
freeze-thaw cycle
dynamic mechanical properties
