陶粒混凝土梁裂缝及延性的试验研究  

Experimental Study on Cracks and Ductility of Ceramsite Concrete Beams

作　　者：于周平 杨伟军[1] 詹培敏 YU Zhou-ping;YANG Wei-jun;ZHAN Pei-min(Colleae of Civil Engineering,Changsha Univereity of Science and Technology,Changsha 410076,China;Yuanpei College,Shaoxing University,Shaoxing 312000,China;Colleae of Civil Engineering,Shaoxing University,Shaoxing 312000,China)

机构地区：[1]长沙理工大学土木工程学院,长沙410076 [2]绍兴文理学院元培学院,绍兴312000 [3]绍兴文理学院土木工程学院,绍兴312000

出　　处：《硅酸盐通报》2019年第7期1991-1996,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(41572305)

摘　　要：通过对5根陶粒混凝土梁和1根普通混凝土梁进行受弯试验,研究陶粒的强度和粒径对混凝土梁裂缝和延性的影响。试验结果表明:陶粒混凝土梁的耗能性能和延性均优于普通混凝土梁,强度和刚度较普通混凝土梁略有降低。在陶粒粒径相同的情况下,陶粒强度越高,陶粒混凝土梁的裂缝数量少而稀,而耗能性能和延性减弱。随着陶粒粒径增大,陶粒混凝土梁的裂缝数量多而密,耗能性能和延性增强。The bending tests of 5 ceramsite concrete beams and 1 ordinary concrete beams were carried out.The effects of ceramsite strength and particle size on the crack and ductility of concrete beams were studied.The results show that the energy dissipation and ductility of ceramsite concrete beams are better than those of ordinary concrete beams,the strength and stiffness of ceramsite concrete beams are slightly lower than the ordinaio concrete beams.When the size of ceramsite is the same,the higher the ceramsite strength,the smaller the number of cracks in the ceramsite concrete beam,and the less energy dissipation and ductility.The cracks in ceramsite concrete beams are numerous and dense,and the energy dissipation and ductility increase as the size of ceramsite increases.

关 键 词：陶粒混凝土梁 挠度 延性 裂缝 

分 类 号：TU377.1[建筑科学—结构工程]