湿热盐环境作用下植物纤维纳米混凝土力学性能试验研究
Experimental Study on Mechanical Properties of Fiber Nanoconcrete Under Wet,Hot and Salt Environment
雷敏 1厍海鹏2
作者信息
- 1. 陕西国际商贸学院,陕西 西安,712046
- 2. 湖北能源集团西北新能源发展有限公司,陕西 榆林,719000
- 折叠
摘要
在建筑材料领域,纤维增强混凝土复合材料凭借其卓越的力学性质引起了广泛关注.随着纳米科技的飞速进步,纳米级强化建筑材料成为全球研究的焦点.在此基础上,深入探讨了纤维与纳米粒子共同强化混凝土材料性能的内在机制.实验主要围绕纳米二氧化硅、聚乙烯醇(PVA)纤维及钢纤维对混凝土的改性增强展开,通过执行立方体抗压、劈裂拉伸及落锤冲击试验,详细分析了在湿热盐胁迫条件下,纳米二氧化硅与纤维混合强化混凝土的力学行为及其损伤机制,为混凝土材料的改性提供了新的视角和理论依据.
Abstract
In the field of building materials,fiber reinforced concrete composites have attracted wide attention due to their excellent mechanical properties.With the rapid progress of nanotechnology,nano-reinforced building materials have become the focus of global research.In this study,the internal mechanism of fiber and nano particles strengthening the properties of concrete materials was deeply discussed.The experiment mainly focuses on the modification and reinforcement of concrete by nano-silica,polyvinyl alcohol(PVA)fiber and steel fiber.Through the cube compression,splitting and tensile tests and drop hammer impact tests,the mechanical behavior and damage mechanism of nano-silica and fiber mixed reinforced concrete are analyzed in detail under the condition of wet,hot and salt stress.It provides a new perspective and theoretical basis for the modification of concrete materials.
关键词
湿热盐环境作用/混凝土/PVA纤维/纳米SiO2/力学性能Key words
effect of wet/hot and salt environment/concrete/PVA fiber/nano-Sio2/mechanical property引用本文复制引用
基金项目
2023年陕西国际商贸学院课程思政专项教学改革项目(KCSZ-ZX202306)
陕西省教育厅专项科研计划项目(19JK0098)
出版年
2024
NETL
NSTL
万方数据