不同橡胶掺量泡沫混凝土动态力学及能量特征  

Dynamic mechanics and energy characteristics of foamed concrete with different rubber content

作　　者：卢龙刚 徐颖[1,2] 葛进进 姚威 顾柯柯 LU Longgang;XU Ying;GE Jinjin;YAO Wei;GU Keke(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001 [2]安徽理工大学省部共建深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001

出　　处：《混凝土》2022年第9期6-10,共5页Concrete

基　　金：国家自然科学基金(52074009)。

摘　　要：为研究橡胶掺量对冲击荷载作用下泡沫混凝土材料的动态力学性能影响,设计以40目粒径橡胶颗粒作为掺和料制成橡胶泡沫混凝土,借助分离式Hopkinson压杆试验平台开展其动态力学试验。结果表明:在同一应变率水平下,橡胶泡沫混凝土的动态抗压强度随着橡胶掺量的增加而降低;掺有橡胶颗粒的泡沫混凝土具有应变率效应;在一定的橡胶掺量范围内,可以提高泡沫混凝土的吸能性能,进而提高了掺加橡胶的泡沫混凝土的抗冲击效果。In order to study the rubber content effect on dynamic mechanical properties of foam concrete under the shockload,rubber-foam concrete are made from rubber particles with 40 mesh sizeof as admixture.With the help of experiment platform of separated Hopkinson pressure bar,the rubber-foam concrete specimens are carried out the dynamic mechanical experiment.The results show that at the same strain rate,the dynamic compressive strength of rubber foamed concrete decreases with the increase of rubber content.The foamed concrete mixed with rubber particles has strain rate effect.In a certain range content of rubber added in foamed concrete,the energy absorption performance of foamed concrete can be improved and then the impact resistance of foamed concrete can be improved.

关 键 词：泡沫混凝土 橡胶 分离式HOPKINSON压杆 吸能 抗冲击 

分 类 号：TU528.2[建筑科学—建筑技术科学]