主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (2): 186-190.

• • 上一篇    下一篇

纳米材料对水泥材料耐火性能的改良研究

孙小菊1，徐瑞御2   

  1. （1.郑州升达经贸管理学院 建筑工程学院，河南 郑州 451191; 2.成都理工大学 工程技术学院，四川 乐山 614007）
  • 收稿日期:2019-09-23 出版日期:2020-02-15 发布日期:2020-09-17
  • 通讯作者: 徐瑞御（1977-），男，四川广元人，成都理工大学工程技术学院讲师。
  • 作者简介:孙小菊（1984-），女，河南驻马店人，郑州升达经贸管理学院建筑工程学院讲师，硕士，主要从事桥梁、隧道施工及建筑材料优化研究，河南省郑州市新郑市龙湖镇文昌路1号，451191。
  • 基金资助:
    四川省教育厅项目“成都地铁8号线一期工程地下水影响研究”（18ZB0086）

Study on modification of fire resistance of cement wallboard by nano materials

SUN Xiao-jue1, XU Rui-yu2   

  1. (1. School of Architecture, Zhengzhou Shengda Economics and Management College, Henan Zhengzhou 451191, China; 2. The Engineering & Technical College， Chengdu University of Technology, Sichuan Leshan 614007, China)
  • Received:2019-09-23 Online:2020-02-15 Published:2020-09-17

摘要： 为了改善建筑水泥墙板结构的耐火性能，利用纳米材料—微硅粉和碳纤维作为外掺料应用于改性研究。以标准砂与硅酸盐水泥质量比为2∶1制备试件，测试抗压强度、抗折强度、耐火性、干缩率并分析微观形貌。结果表明，微硅粉和碳纤维在提高水泥墙板材料抗压和抗折强度的同时，也改善了材料的耐火性能；双掺微硅粉和碳纤维含量为3%和2%的水泥墙体具有最优的耐火性能，燃烧试验后的质量损失为0.64%，比参照组烧失量降低了85%；从水泥基改性材料微观形貌发现，超细硅粉颗粒的填充效应是材料强度性能提升的主要原因，碳纤维的粘结作用和表面反应是耐火性能提高的主要原因。

关键词: 微硅粉, 碳纤维, 水泥基墙板, 强度试验, 耐火性能, 扫描电镜

Abstract: In order to improve the fire resistance of cement wallboard structure, nano materials which are micro silicon powder and carbon fiber were used as admixture to study the material modification. Test pieces were prepared with the mass ratio of standard sand and Portland cement of 2∶1. The compressive strength, flexural strength, fire resistance and dry shrinkage were tested and the micro morphology was analyzed. The results showed that micro silicon powder and carbon fiber can not only improve the compressive and flexural strength of cement masonry, but also improve its fire resistance. The cement wallboard with double addition of micro silicon powder and carbon fiber content of 3% and 2% has the best fire resistance, and the mass loss after combustion test is 0.64%, 85% lower than that of the reference group. It is found by micro morphology of cement based modified materials that the filling effect of ultrafine silica powder particles is the main reason for the improvement of material strength performance, and the bonding effect and surface reaction of carbon fiber are the main reasons for the improvement of fire-resistance performance.

Key words: micro silicon powder, carbon fiber, cement wallboard, strength test, fire resistance, SEM