玄武岩纤维沙漠砂钢筋混凝土梁受弯性能试验研究
Experimental study on flexural behavior of basalt fibers admixing desert sand RC beam
沙吾列提·拜开依 1董存 2买尔旦·赛皮丁 2古丽迪·努尔特列克2
作者信息
- 1. 新疆大学建筑工程学院,乌鲁木齐 830017;新疆大学新疆建筑结构与抗震重点实验室,乌鲁木齐 830017
- 2. 新疆建筑科学研究院(有限责任公司),乌鲁木齐 830054
- 折叠
摘要
通过试验对沙漠砂部分代替普通砂的可行性进行探讨,研究沙漠砂和玄武岩纤维的掺入对混凝土试块和钢筋混凝土梁性能的影响.对普通砂混凝土梁、沙漠砂混凝土梁、玄武岩纤维普通砂混凝土梁、玄武岩纤维沙漠砂混凝土梁进行了受弯性能试验,得出了试验梁的荷载-挠度曲线、裂缝分布和破坏模式.之后,利用现有理论公式,计算混凝土试块的劈裂抗拉强度、轴心抗压强度、弹性模量和试验梁的屈服弯矩、极限弯矩.结果表明:天然沙漠砂部分代替普通砂是可行的;沙漠砂和玄武岩纤维的掺入没有使混凝土试块和钢筋混凝土梁的性能发生本质性改变;沙漠砂和玄武岩纤维掺入后,混凝土试块和钢筋混凝土梁的计算准则仍旧适用.
Abstract
The feasibility of desert sand partly instead of ordinary sand was discussed,and the effects of desert sand and basalt fiber on the performance of concrete test blocks and reinforced concrete beams were studied.The flexural behavior tests of ordinary sand concrete beam,desert sand concrete beam,basalt fiber ordinary sand concrete beam and basalt fiber desert sand concrete beam were carried out,and the load-deflection curves,crack distribution and failure modes of the test beams were obtained.Then,using the existing theoretical formula,the splitting tensile strength,axial compressive strength,elastic modulus of the concrete test block and the yield bending moment and ultimate bending moment of the test beam were calculated.The results show that it is feasible to partially replace ordinary sand with natural desert sand.The incorporation of desert sand and basalt fiber does not substantially change the performance of concrete test blocks and reinforced concrete beams.After the incorporation of desert sand and basalt fiber,the calculation criteria of concrete test blocks and reinforced concrete beams are still applicable.
关键词
沙漠砂/玄武岩纤维/钢筋混凝土梁/受弯性能Key words
desert sand/basalt fiber/reinforced concrete beam/flexural behavior引用本文复制引用
出版年
2024
NETL
NSTL
万方数据