华南理工大学学报(自然科学版) ›› 2009, Vol. 37 ›› Issue (3): 120-126,131.

• 土木建筑工程 • 上一篇    下一篇

不同饰面材料高强混凝土柱的耐火性能

吴波李杰黄玉龙王帆1   

  1. 1. 华南理工大学 亚热带建筑科学国家重点实验室, 广东 广州 510640; 2. 香港理工大学 土木与结构工程系, 香港
  • 收稿日期:2008-03-21 修回日期:2008-07-02 出版日期:2009-03-25 发布日期:2009-03-25
  • 通信作者: 吴波(1968-),男,研究员,博士生导师,主要从事结构抗灾和新型混凝土结构研究. E-mail:bowu@scut.edu.cn
  • 作者简介:吴波(1968-),男,研究员,博士生导师,主要从事结构抗灾和新型混凝土结构研究.
  • 基金资助:

    国家科技支撑计划项目(2006BAJ03A03-12);教育部新世纪优秀人才支持计划项目(NCET-04-0819);华南理工大学亚热带建筑科学国家重点实验室重点研究项目(2008ZA10)

Fire-Resistant Performance of High-Strength Concrete Columns with Different Decorative Materials

Wu Bo1  Li Jie1  Huang Yu-long2  Wang Fan1   

  1. 1. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hong Kong, China
  • Received:2008-03-21 Revised:2008-07-02 Online:2009-03-25 Published:2009-03-25
  • Contact: 吴波(1968-),男,研究员,博士生导师,主要从事结构抗灾和新型混凝土结构研究. E-mail:bowu@scut.edu.cn
  • About author:吴波(1968-),男,研究员,博士生导师,主要从事结构抗灾和新型混凝土结构研究.
  • Supported by:

    国家科技支撑计划项目(2006BAJ03A03-12);教育部新世纪优秀人才支持计划项目(NCET-04-0819);华南理工大学亚热带建筑科学国家重点实验室重点研究项目(2008ZA10)

摘要: 通过对8根装饰有不同饰面材料的高强混凝土柱式构件进行ISO834标准升温条件下的明火试验,考察了饰面材料对构件表面混凝土爆裂的影响,分析了不同饰面材料高强混凝土构件的内部温度场,并与试验结果进行了对比.研究结果表明:饰面材料的引入虽然延缓了构件表面混凝土的起爆时刻,却加重了其爆裂程度;双层防火板可较好地抑制构件表面混凝土的高温爆裂;将饰面材料折算为等效混凝土的做法,总体上可较好地反映饰面材料对构件截面温度场的影响.

关键词: 高强混凝土, 饰面材料, 温度场, 耐火性能

Abstract:

Eight high-strength concrete columns with different decorative materials were tested following the ISO834 standard heating process, and the influence of decorative materials on the explosive spalling of concrete was discussed. Then, the internal temperature fields of the specimens were analyzed, and the results were finally compared with the measured ones. It is indicated that, with the addition of decorative materials, the explosive spalling of concrete delays but the spalling becomes more serious, that two-layer insulation plates significantly prevent high- strength concrete from explosive spalling, and that, by converting decorative materials into equivalent concrete, the influence of decorative materials on the temperature field in specimen section can be well revealed.

Key words: high-strength concrete, decorative material, temperature field, fire-resistant performance