Publication: Mechanical properties of concrete containing beeswax/dammar gum as phase change material for thermal energy storage
Date
2018
Authors
Umar H.
Rizal S.
Riza M.
Mahlia T.M.I.
Journal Title
Journal ISSN
Volume Title
Publisher
AIMS Press
Abstract
This study aims to investigate the mechanical properties of concrete containing phase change materials (PCM). This research begins with the investigation of melting temperature, enthalpy, the thermal conductivity of the phase change materials using the T-history method, followed by preparation of concrete containing PCM, and finally testing of mechanical properties of concrete through compressive strength test. This study used beeswax, tallow, and dammar gum as PCM mixture. From the results of the PCM properties test, shows that the latent heat energy content from beeswax and tallow exhibit an excellent potential to be used as PCM, while dammar gum is benefited in increasing the thermal conductivity of concrete containing PCM. From concrete specimen test containing 10%, 20% and 30% PCM with 7 days and 28 days aged, the results exhibit that the mechanical properties of the concrete decreased along with the increasing of PCM content. The same test also conducted at the PCM melting temperature. Therefore, the concrete compressive strength test conducted at 45 �C. From the test results, the concrete compressive strength decreased about 3-24% of PCM-0% concrete compressive strength. Drastic compressive strength reduction tends to occur in PCM-Tallow concrete mixture. This study concluded that the PCM is potentially useful as a heat energy absorber material in buildings and lightweight concrete rather than construction structures. � 2018 the Author(s).
Description
Compressive strength; Concrete mixtures; Concrete products; Food products; Heat storage; Light weight concrete; Melting point; Mixtures; Thermal conductivity; Waxes; Beeswax; Concrete; Concrete compressive strength; Energy content; Heat energy; Material mixture; Material property test; Properties of concretes; Strength tests; Thermal energy storage; Phase change materials