活性粉末混凝土热物理性质的研究

被引：16

作者：

鞠杨

刘红彬

刘金慧

田开培

危松

郝松

机构：

[1] 中国矿业大学煤炭资源与安全开采国家重点实验室岩石混凝土破坏力学北京市重点实验室

来源：

中国科学:技术科学 | 2011年 / 12期

关键词：

活性粉末混凝土; 热物理性质; 高温; 钢纤维; 热传导; 比热容; 热膨胀;

D O I：

暂无

中图分类号：

TU528.31 [高强混凝土、早强混凝土、快硬混凝土];

学科分类号：

0805 ; 080502 ; 081304 ;

摘要：

通过高温试验获得了不同钢纤维掺量RPC的热传导、热扩散、比热容和热膨胀等热物理性质,分析了RPC热物理性质随温度和钢纤维掺量变化的规律,并与普通高强和高性能混凝土的热物理性质进行了对比.建立了RPC热物性参数随温度和钢纤维掺量变化的经验关系.利用传热学和固体物理方法分析了RPC传热过程与热传导性质变化的微观物理机制,推导了RPC的比热容和热膨胀系数的理论表达式,利用理论模型定量地分析了温度和钢纤维对RPC比热容和热膨胀性质的不同影响,并给出了判别条件,理论预测与试验观测相一致.

引用

页码：1584 / 1605

页数：22

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