CAJ | 학술논문

针对大体积混凝土易出现的温度裂缝问题，利用相变储能材料（PCM）在特定温度范围内的热效应来控制大体积混凝土内部温度场，降低了混凝土内部温度应力，有效防止大体积混凝土温度裂缝的出现。利用自行设计的温度测试系统，测试了标准尺寸试件的内部温度场。对比分析了单一相变材料、复合相变材料及微胶囊相变材料的控温性能和材料性能。研究结果表明：相变控温材料能使大体积混凝土内部温度变化速率趋于平缓，有效阻止因水化热所引起的早期热裂缝，且对混凝土强度影响不大；相变材料的复合工艺对控温性能也有一定影响。研究结果能较好的解决大体积混凝土的温度裂缝问题，具有较好的推广应用前景。
침대대체적혼응토역출현적온도렬봉문제，이용상변저능재료（PCM）재특정온도범위내적열효응래공제대체적혼응토내부온도장，강저료혼응토내부온도응력，유효방지대체적혼응토온도렬봉적출현。이용자행설계적온도측시계통，측시료표준척촌시건적내부온도장。대비분석료단일상변재료、복합상변재료급미효낭상변재료적공온성능화재료성능。연구결과표명：상변공온재료능사대체적혼응토내부온도변화속솔추우평완，유효조지인수화열소인기적조기열렬봉，차대혼응토강도영향불대；상변재료적복합공예대공온성능야유일정영향。연구결과능교호적해결대체적혼응토적온도렬봉문제，구유교호적추엄응용전경。
This paper aims to solve the problem of temperature crack in mass concrete. The internal temperature stress of mass concrete can be reduced owing to thermal effects of phase change stored energy material(PCM) in particular range to control internal temperature field,and then temperature crack can be prevented effectively. This study measures the internal temperature fields of standard size specimens by using self-designed tempera-ture testing system,and compares temperature control performance and material properties of single,composite and microcapsule phase change stored energy material. The research results show that PCM can not only pre-vent thermal crack at early stage by retard temperature variation rate in mass concrete effectively,but also has little influence on concrete strength. The composite process of phase change stored energy material(PCM)has some effects on temperature control performance.