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The Scientific World Journal
Volume 2014, Article ID 781393, 6 pages
http://dx.doi.org/10.1155/2014/781393
Research Article

Feasibility of Using Phase Change Materials to Control the Heat of Hydration in Massive Concrete Structures

1Department of Architectural Engineering, Gachon University, Gyeonggi-Do 461-701, Republic of Korea
2Tripod Co., Inc., Daejeon 305-335, Republic of Korea
3Department of Architectural Engineering, Woosong University, Daejeon 300-830, Republic of Korea
4Red Butterfly Strontium Industry Co., Ltd, Choungqing 402-368, China
5Department of Architectural Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea

Received 3 April 2014; Revised 11 June 2014; Accepted 26 June 2014; Published 16 July 2014

Academic Editor: Shicong Kou

Copyright © 2014 Won-Chang Choi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents experimental results that can be applied to select a possible phase change material (PCM), such as a latent heat material (LHM), to control the hydration heat in mass concrete structures. Five experimental tests (microconduction, simplified adiabatic temperature rise, heat, and compressive strength tests) were conducted to select the most desirable LHM out of seven types of inorganic PCM used in cement mortar and to determine the most suitable mix design. The results of these experimental tests were used to assess the feasibility of using PCM to reduce hydration heat in mass concrete that was examined. The experimental results show that cement mortar containing barium- [Ba(OH)2·8H2O] based PCM has the lowest amount of total hydration heat of the cement pastes. The barium-based PCM provides good latent heat properties that help to prevent volume change and microcracks caused by thermal stress in mass concrete.