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The Effect of Specimen Size on the Results of Concrete Adiabatic Temperature Rise Test with Commercially Available Equipment

机译:试件尺寸对市售设备绝热升温试验结果的影响

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摘要

In this study, adiabatic temperature rise tests depending on binder type and adiabatic specimen volume were performed, and the maximum adiabatic temperature rises and the reaction factors for each mix proportion were analyzed and suggested. The results indicated that the early strength low heat blended cement mixture had the lowest maximum adiabatic temperature rise (Q∞) and the ternary blended cement mixture had the lowest reaction factor (r). Also, Q and r varied depending on the adiabatic specimen volume even when the tests were conducted with a calorimeter, which satisfies the recommendations for adiabatic conditions. Test results show a correlation: the measurements from the 50 L specimens were consistently higher than those from the 6 L specimens. However, the Q∞ and r values of the 30 L specimen were similar to those of the 50 L specimen. Based on the above correlation, the adiabatic temperature rise of the 50 L specimen could be predicted using the results of the 6 L and 30 L specimens. Therefore, it is thought that this correlation can be used for on-site concrete quality control and basic research.
机译:在这项研究中,根据粘合剂类型和绝热样品体积进行了绝热温升测试,并分析并提出了每种混合物比例的最大绝热温升和反应因素。结果表明,早强低热混合水泥混合料的最大绝热温升(Q∞)最低,三元混合水泥混合料的反应因子(r)最低。而且,即使使用热量计进行测试,Q和r仍取决于绝热样品的体积而变化,这满足了绝热条件的建议。测试结果显示出相关性:50升样品的测量值始终高于6升样品的测量值。但是,30 L样品的Q∞和r值类似于50 L样品的Q∞和r值。基于上述相关性,可以使用6 L和30 L标本的结果预测50 L标本的绝热温升。因此,认为这种相关性可以用于现场混凝土质量控制和基础研究。

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