利用硅酸盐水泥制备了抗渗等级为P8、耐热度为350℃的混凝土,测试了高温煅烧后混凝土试件尺寸、质量、强度等宏观性能,研究了煅烧制度、矿物掺合料、粗集料种类时混凝土耐热性能的影响,采用扫描电子显微镜(SEM)分析了混凝土经高温处理后微观结构的变化.宏观性能测试结果表明,烘干处理有助于提高混凝土的耐热性能,矿渣混凝土比粉煤灰混凝土更适合用于耐热环境,以破碎卵石为集料的混凝土的耐热性能优于以石灰石碎石为集料的混凝土.SEM分析结果显示,高温煅烧后,矿渣混凝土的内部结构较粉煤灰混凝土更为致密.
参考文献
| [1] | 覃丽坤,宋玉普,王玉杰,张众,于长江.高温对混凝土力学性能影响的试验研究[J].混凝土,2004(05):9-11. |
| [2] | 贾艳东,田傲霜,张斌,许传矗,李季.不同时间高温后混凝土性能的试验研究[J].辽宁工程技术大学学报（自然科学版）,2006(06):864-866. |
| [3] | 余志武,丁发兴,罗建平.高温后不同类型混凝土力学性能试验研究[J].安全与环境学报,2005(05):1-6. |
| [4] | Leyla Tanacan;Halit Yasa Ersoy;UEmit Arpacioglu .Effect Of High Temperature And Cooling Conditions On Aerated Concrete Properties[J].Construction and Building Materials,2009(3):1240-1248. |
| [5] | Chen Bing;Liu Juanyu.Residual strength of hubrid-fiberreiforced high-strength concrete after exposure to high temperatures[J].Cement and Concrete Research,2004(34):1065. |
| [6] | Peng Gaifei;Yang Wenwu;Zhao Jie.Explosive spalling and residual mechanical properties of fiber-toughened high-performance concrete subjected to high temperatures[J].Cement and Concrete Research,2006(36):723. |
| [7] | Licia Alarcon Ruiz.The use of thermal analusis in assessing the effect of temperature on a cement paste[J].Cement and Concrete Research,2005(35):609. |
| [8] | Handoo S K.Physicochemical,mineralogical,and morphological characteristics of concrete exposed to elevated temperatures[J].Cement and Concrete Research,2002(32):1009. |
| [9] | Fu Y F.Thermal induced stress and associated cracking in cement-based composite at elevated temperatures Part Ⅱ:Thermal cracking aroud multiple inclusions[J].Cement and Concrete Composites,2004(26):113. |
| [10] | Hertz K D.Limits of spalling of fire-exposed concrete[J].Fire Safety Journal,2003(38):103. |
| [11] | 钟祥凰 .高性能混凝土耐火性能的研究[D].武汉理工大学,2007. |
| [12] | 孟宏睿 .高温作用后混凝土力学性能及无损检测的试验研究[D].西安建筑科技大学,2005. |
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