聚丙烯纤维增强陶粒混凝土基本力学性能试验研究
Experimental Study on Basic Mechanical Properties of Polypropylene Fiber-Reinforced Ceramsite Concrete
顾非 1李琮琦 1杨滢 2李晖龙 1金自然 1王欣 1刘虎山3
作者信息
- 1. 扬州大学建筑科学与工程学院,扬州 225127
- 2. 无锡地铁建设有限责任公司,无锡 214000
- 3. 江苏和天下节能科技股份有限公司,扬州 225127
- 折叠
摘要
为改善陶粒混凝土的强度和脆性,本研究将聚丙烯纤维加入陶粒混凝土,共制备了 180个聚丙烯纤维增强陶粒混凝土试件,并进行了立方体抗压试验、劈裂抗拉试验、轴心抗压试验和弹性模量试验.结果表明,聚丙烯纤维能有效提升陶粒混凝土的劈裂抗拉强度和拉压比,对抗压强度和弹性模量的影响相对较小.基于试验结果,本研究提出了聚丙烯纤维增强陶粒混凝土的劈裂抗拉强度与立方体抗压强度、轴心抗压强度与立方体抗压强度的换算关系模型以及弹性模量的数值模型.
Abstract
In order to improve the strength and brittleness of ceramsite concrete,polypropylene fiber was added to ceramsite concrete in this study.A total of 180 polypropylene fiber-reinforced ceramsite concrete specimens were prepared,and cube compressive test,splitting tensile test,axial compressive test and elastic modulus test were carried out.The results show that polypropylene fiber can effectively improve the splitting tensile strength and tension-compression ratio of ceramsite concrete,and has little effect on compressive strength and elastic modulus.Based on the experimental results,the conversion relationship model between splitting tensile strength and cube compressive strength,axial compressive strength and cube compressive strength,and the numerical model of elastic modulus of polypropylene fiber-reinforced ceramsite concrete were proposed.
关键词
陶粒混凝土/聚丙烯纤维/纤维增强/力学性能/数值模型/尺寸效应Key words
ceramsite concrete/polypropylene fiber/fiber reinforcement/mechanical property/numerical modeling/size effect引用本文复制引用
基金项目
住建部科技计划项目(2020-K-114)
江苏省产学研合作项目(BY20221408)
江苏省研究生科研创新计划项目(KYCX23_3540)
出版年
2024
国家科技期刊平台
NSTL
万方数据