不同加入方式对高温后玄武岩纤维再生混凝土力学性能的影响

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (2): 88-92.

不同加入方式对高温后玄武岩纤维再生混凝土力学性能的影响

郭瑞晋, 毕重, 王涪, 王盼乐

辽宁工业大学,锦州121001

收稿日期:2016-09-02 出版日期:2017-02-28 发布日期:2017-02-28
作者简介:郭瑞晋(1990-),女,硕士研究生,研究方向为高性能混凝土,505820204@qq.com。

EFFECTS OF DIFFERENT MIXING METHODS ON MECHANICAL PROPERTIES OF BASALT FIBER REINFORCED CONCRETE AFTER HIGH TEMPERATURE

GUO Rui-jin, BI Zhong, WANG Fu, WANG Pan-le

Liaoning University of Technology, Jinzhou 121001, China

Received:2016-09-02 Online:2017-02-28 Published:2017-02-28

摘要/Abstract

摘要： 试验研究了在不同玄武岩纤维体积掺量(0%、0.1%、0.15%和0.2%)、不同高温(20 ℃、200 ℃、400 ℃、600 ℃)情况下,两种不同的纤维加入方式(水泥浆包裹纤维、直接加入)对再生粗骨料混凝土(取代率为50%)的立方体抗压、劈裂抗拉强度的影响,结果表明间接加入方式下的强度比高于直接加入方式,但是变量不同,提高的幅度不同。当温度一定时,抗压强度提高幅度随纤维掺量的增加而增加,0.2%时最大,劈裂抗拉强度提高幅度则随纤维掺量的增加而减小,0.1%时最大;当掺量一定时,抗压强度提高幅度随温度的变化呈折线趋势,20~200 ℃时上升,200~400 ℃时趋于平缓,400~600 ℃时再上升,对于劈裂而言,20~200 ℃时基本不变,200 ℃之后提高幅度急剧下降。

关键词: 玄武岩纤维, 加入方式, 高温, 强度

Abstract: In this study, the effects of two different fibers (cement slurry wrapped fiber, direct incorporation) on the compressive strength and tensile strength of reinforced coarse aggregate concrete were studied under different basalt fiber volume (0%, 0.1%, 0.15%, 0.2%) and high temperature(20 ℃, 200 ℃, 400 ℃, 600 ℃). The strength ratio of the indirect mixing method was higher than that of the direct mixing method, but the variable was different and the range of the increase was different. When the temperature was kept constant, the increase amplitude of compressive strength is increased with the increase of fiber content, and the maximum is 0.2%. The increase amplitude of splitting tensile strength is decreased with the increase of fiber content, and the maximum is 0.1%. When the dosage is constant, the increasing range of compressive strength shows the trend of the broken line with the change of temperature. It presented an upward trend between 20 ℃ and 200 ℃, tended to be gentle between 200 ℃ and 400 ℃, and rose again between 400 ℃ and 600 ℃. The splitting tensile strength is basically unchanged with the increased amplitude between 20 ℃ and 200 ℃, but presented a trend of sharp decline after 200 ℃.

Key words: basalt fiber, incorporation manner, high temperature, strength

中图分类号:

TB332

郭瑞晋, 毕重, 王涪, 王盼乐. 不同加入方式对高温后玄武岩纤维再生混凝土力学性能的影响[J]. 玻璃钢/复合材料, 2017, 0(2): 88-92.

GUO Rui-jin, BI Zhong, WANG Fu, WANG Pan-le. EFFECTS OF DIFFERENT MIXING METHODS ON MECHANICAL PROPERTIES OF BASALT FIBER REINFORCED CONCRETE AFTER HIGH TEMPERATURE[J]. Fiber Reinforced Plastics/Composites, 2017, 0(2): 88-92.

参考文献

[1] 魏斌. 玄武岩纤维的化学稳定性能及其涂层改性研究[D]. 哈尔滨: 哈尔滨工业大学, 2011.
[2] 李佳彬, 肖建庄, 孙振平. 再生粗骨料特性及其对再生混凝土性能的影响[J]. 建筑材料学报, 2004, 7(4): 390-395.
[3] 陈宗平, 薛建阳, 余兴国, 等. 再生混凝土轴心抗压强度实验研究[J]. 混凝土, 2011(9): 4-11.
[4] 王社良, 于洋, 张博, 等. 粉煤灰和硅粉对再生混凝土力学性能影响的试验研究[J]. 混凝土, 2011(12): 53-55.
[5] 李为民, 许金余. 玄武岩纤维对混凝土的增强和增韧效应[J]. 硅酸盐学报, 2008, 36(4): 476-481.
[6] 王钧, 任靖豪, 郭大鹏. 短切玄武岩纤维混凝土基本力学性能的尺寸效应[J]. 建筑科学与工程学报, 2015(05): 96-103.
[7] 王海良, 袁磊, 宋浩. 短切玄武岩纤维混凝土力学性能试验研究[J]. 建筑, 2013(S2): 562-564.
[8] 王钧, 马跃, 张野, 等. 短切玄武岩纤维混凝土力学性能试验与分析[J]. 工程力学学, 2014(S1): 99-102, 114.
[9] 林志龙, 林进, 林志超, 等. 玄武岩纤维混凝土的力学性能研究[J]. 福建建材, 2016(01): 1-3.
[10] 董进秋, 杜艳廷, 闻宝联, 等. 玄武岩纤维混凝土力学性能与增韧机理研究[J]. 工业建筑, 2011(S1): 638-641.
[11] 吴江, 李玉香, 陈雅斓, 等. 短切玄武岩纤维增强混凝土力学性能试验研究[J]. 混凝土, 2014(10): 99-102.
[12] 廉杰, 杨勇新, 杨萌, 等. 短切玄武岩纤维增强混凝土力学性能的试验研究[J]. 工业建筑, 2007, 37(6): 8-10.
[13] 邢宪才. BFRP筋与玄武岩纤维再生混凝土粘结性能研究[D]. 锦州: 辽宁工业大学, 2015(12): 94-95.
[14] 黄靖. 不同粗骨料种类再生混凝土的基本性能试验研究[D]. 南宁: 广西大学硕士学位论文, 2012.
[15] 李欣聪. 低温处理对高温后再生混凝土力学性能影响的试验研究[D]. 锦州: 辽宁工业大学, 2016: 14-17.