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

Materials

Byung Jae Lee¹  Jin Wook Bang²  Kyung Joon Shin²  Yun Yong Kim² 

[1] Research & Development Center, JNTINC Co. Ltd., Hwaseong 445-842, Korea; E-Mail:;Department of Civil Engineering, Chungnam National University, Daejeon 305-764, Korea; E-Mails:

关键词: heat of hydration;    adiabatic temperature rise test;    specimen size;    low heat Portland cement;    ternary blended cement;    early strength low heat blended cement;   

DOI  :  10.3390/ma7127861

来源: mdpi

【 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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.