复掺纤维和玻化微珠对湿热环境下混凝土性能的影响

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发布时间：2020-01-06 00:00:00

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复掺纤维和玻化微珠对湿热环境下混凝土性能的影响

Effects of Composite Fiber and Vitrified Beads on the Performance of Concrete in Hot-humid Environment

2021年第8期

湿热环境；纤维；玻化微珠；混凝土；微观结构；声发射；抗压性能；破坏形式

Hot-humid environment; Fiber; Vitrified bead; Concrete; Microstructure; Acoustic emission; Compressive performance; Failure mode

2021年第8期

10.19761/j.1000-4637.2021.08.054.05

辽宁省“兴辽英才计划”青年拔尖人才资助项目（XLYC2007146）。

吕家栋1，赵立财1,2

1.中铁十九局集团第三工程有限公司，辽宁沈阳 110136；2.台湾科技大学营建工程系，中国台湾台北 10607

吕家栋1，赵立财1,2

吕家栋,赵立财.复掺纤维和玻化微珠对湿热环境下混凝土性能的影响[J].混凝土与水泥制品,2021(8):54-58.

LYU J D,ZHAO L C.Effects of Composite Fiber and Vitrified Beads on the Performance of Concrete in Hot-humid Environment[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):54-58.

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摘要：研究了复掺钢纤维、聚丙烯纤维和玻化微珠对混凝土抗压性能的影响，通过微观定量方法描述了混凝土孔隙结构与抗压性能之间的关系，结合声发射技术分析了湿热环境下混凝土的压缩破坏特征。结果表明：复掺钢纤维、聚丙烯纤维和玻化微珠混凝土在各级温度下的抗压强度均最高，且随温度上升的强度损失率最低；复掺钢纤维、聚丙烯纤维和玻化微珠混凝土的孔隙率和孔隙分形维数与抗压强度有良好的非线性关系；复掺钢纤维、聚丙烯纤维和玻化微珠可使混凝土的破坏形式从以张拉破坏为主转变为以剪切破坏为主。 Abstract: The effects of steel fiber, polypropylene fiber and vitrified beads on the compressive performance of concrete were studied, and the relationship between pore structure and compressive performance of concrete was described by microscopic quantitative method, and the compression failure characteristics of concrete under hot-humid environment were studied. The results show that the compressive strength of the concrete mixed with steel fiber, polypropylene fiber and vitrified beads is the highest at all temperatures, and the strength loss rate with the increase of temperature is the lowest. The porosity and fractal dimension of the concrete mixed with steel fiber, polypropylene fiber and vitrified beads have good nonlinear relationship with compressive strength. The addition of steel fiber, polypropylene fiber and vitrified beads can change the concrete failure mode from tensile failure to shear failure.

英文名 : Effects of Composite Fiber and Vitrified Beads on the Performance of Concrete in Hot-humid Environment

刊期 : 2021年第8期

关键词 : 湿热环境；纤维；玻化微珠；混凝土；微观结构；声发射；抗压性能；破坏形式

Key words : Hot-humid environment; Fiber; Vitrified bead; Concrete; Microstructure; Acoustic emission; Compressive performance; Failure mode

刊期 : 2021年第8期

DOI : 10.19761/j.1000-4637.2021.08.054.05

文章编号 :

基金项目 : 辽宁省“兴辽英才计划”青年拔尖人才资助项目（XLYC2007146）。

作者 : 吕家栋1，赵立财1,2

单位 : 1.中铁十九局集团第三工程有限公司，辽宁沈阳 110136；2.台湾科技大学营建工程系，中国台湾台北 10607

吕家栋1，赵立财1,2

吕家栋,赵立财.复掺纤维和玻化微珠对湿热环境下混凝土性能的影响[J].混凝土与水泥制品,2021(8):54-58.

LYU J D,ZHAO L C.Effects of Composite Fiber and Vitrified Beads on the Performance of Concrete in Hot-humid Environment[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(8):54-58.

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参考文献

引用本文

Abstract: The effects of steel fiber, polypropylene fiber and vitrified beads on the compressive performance of concrete were studied, and the relationship between pore structure and compressive performance of concrete was described by microscopic quantitative method, and the compression failure characteristics of concrete under hot-humid environment were studied. The results show that the compressive strength of the concrete mixed with steel fiber, polypropylene fiber and vitrified beads is the highest at all temperatures, and the strength loss rate with the increase of temperature is the lowest. The porosity and fractal dimension of the concrete mixed with steel fiber, polypropylene fiber and vitrified beads have good nonlinear relationship with compressive strength. The addition of steel fiber, polypropylene fiber and vitrified beads can change the concrete failure mode from tensile failure to shear failure.

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复掺纤维和玻化微珠对湿热环境下混凝土性能的影响

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