玄武岩纤维碱腐蚀性能及其增强砂浆的力学性能研究
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- 英文论文题名：Corrosion Behavior of Basalt Fibers in Alkali Solution and Mechanical Property of Fiber Reinforced Motar
- 论文作者：成涛华 ; 李玉香
- 英文论文作者：Cheng Taohua ; Li Yuxiang ; School of Materials Science and Engineering ; Southwest University of Science and Technology
- 年：2016
- 作者机构：西南科技大学材料科学与工程学院;
- 论文关键词：玄武岩纤维 ; 耐碱性能 ; 腐蚀行为 ; 失效机制 ; 辅助胶凝材料
- 英文论文关键词：basalt fiber ; alkali resistance ; corrosion behavior ; failure mechanism ; supplementary cementitious materials
- 会议召开时间：2016-12-16
- 会议录名称：中国硅酸盐学会水泥分会第六届学术年会论文摘要集
- 语种：中文
- 分类号：TQ177.6
- 学会代码：EUGQ
- 会议名称：中国硅酸盐学会水泥分会第六届学术年会
- 会议地点：中国江苏盐城
- 主办单位：中国硅酸盐学会水泥分会
- 学会名称：中国硅酸盐学会
- 页数：1
- 文件大小：59k
- 原文格式：O
- 会议级别：全国
摘要
通过扫描电子显微镜(SEM)、色散X射线能量谱仪(EDS)、X射线衍射分析(XRD),研究了玄武岩纤维在NaOH、KOH、Ca(OH)_2溶液以及混合模拟水泥孔隙液的腐蚀行为以及失效机制。同时,比较了玄武岩纤维与耐碱玻璃纤维在混合模拟孔隙液中的耐碱性能,测试了纤维腐蚀后的拉伸强度以及质量损失。此外,研究了玄武岩和耐碱玻璃纤维增强砂浆的力学性能以及辅助性胶凝材料(硅灰和粉煤灰)对纤维增强砂浆的力学性能的影响和纤维的保护作用。结果表明,玄武岩纤维对砂浆具有较好的增强作用,但是耐碱性能不如耐碱玻璃纤维;辅助胶凝材料可以提高砂浆的力学性能,并且延缓水泥基体碱性环境对纤维的腐蚀。
The corrosion behavior and failure mechanism of basalt fiber immersed in NaOH,KOH,saturated Ca(OH)_2 solution and mixed simulative cement porewater was studied with Scanning electron microscopy(SEM),Energy disperse spectroscopy(EDS),X-ray diffraction(XRD) and infrared spectroscopy(IR).Meanwhile,the alkali resistance of basalt fiber was investigated by comparison with AR-glass fiber treated by the simulative cement porewater.Weight loss ratio and tensile strength loss of fibers after etching in alkali solution were determined.In addition,the mechanical property of basalt and AR-glass fiber reinforced mortar and the fibers corrosion in mortar were investigated.The effect of supplementary cementitious materials,fly ash and silica fume,on the mechanical property of basalt fiber reinforced mortar and the fiber protection were investigated.The obtained results indicated that basalt fiber had better mechanical improvement efficiency for the mortar,but weaker corrosion resistance than AR-glass fiber.The supplementary cementitious could improve the mechanical property and retard the fiber corrosion.
The corrosion behavior and failure mechanism of basalt fiber immersed in NaOH,KOH,saturated Ca(OH)_2 solution and mixed simulative cement porewater was studied with Scanning electron microscopy(SEM),Energy disperse spectroscopy(EDS),X-ray diffraction(XRD) and infrared spectroscopy(IR).Meanwhile,the alkali resistance of basalt fiber was investigated by comparison with AR-glass fiber treated by the simulative cement porewater.Weight loss ratio and tensile strength loss of fibers after etching in alkali solution were determined.In addition,the mechanical property of basalt and AR-glass fiber reinforced mortar and the fibers corrosion in mortar were investigated.The effect of supplementary cementitious materials,fly ash and silica fume,on the mechanical property of basalt fiber reinforced mortar and the fiber protection were investigated.The obtained results indicated that basalt fiber had better mechanical improvement efficiency for the mortar,but weaker corrosion resistance than AR-glass fiber.The supplementary cementitious could improve the mechanical property and retard the fiber corrosion.
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