Use of paraffin impregnated lightweight aggregates to improve thermal properties of concrete panels
- 344 Downloads
In this study, the effect of aggregates impregnated with phase change material (paraffin type) on properties of concrete is investigated. The experimental series consists of two stages. The first stage is to investigate the techniques used to impregnate phase changed material (paraffin type) into lightweight aggregates and the properties of aggregates with paraffin inside (PLA). Two impregnation techniques are introduced, (1) heat only and (2) heat and pressure (autoclaving). Using the obtained results, the aggregate with the highest level of impregnation in the shortest time is selected to use in the concrete production process of the next stage. In the second stage, the properties of concrete mixed with non-paraffin and paraffin impregnated lightweight aggregates (PLA) at different proportions are investigated. The experimental series include density and absorption, compressive strength, thermal storage (and insulation) and sound transmission loss. Results in aggregate level show the increase in specific gravity and the decrease in absorption with paraffin inserted into aggregates. In concrete form, the density, compressive strength and sound insulation are found to increase with the PLA replacement ratio. The sound transmission loss, on the other hand, becomes less efficient with increasing PLA replacement ratio.
KeywordsPhase changed material Paraffin impregnated aggregate Impregnation technique Thermal properties Sound transmission loss
Authors would like to thank TEKA© Co., Ltd. for supporting lightweight aggregates, all senior students involved in this project and Charissa S. for reviewing the manuscript.
- 2.Lorsch HG, Kauffman KW, Denton JC (1976) Thermal energy storage for heating and air conditioning, future energy production system. Heat Mass Transf Process 1:69–85Google Scholar
- 3.Abhat A et al (1981) Development of a modular heat exchanger with an integrated latent heat storage, Report no. BMFT FBT 81-050, Germany Ministry of Science and Technology BonnGoogle Scholar
- 4.Hale DV, Hoover MJ, O’Neill MJ (1971) Phase change materials hand book. Marshal Space Flight Center, AlabaaGoogle Scholar
- 7.George A (1989) Hand book of thermal design. In: Guyer C (ed) Phase change thermal storage materials. McGraw Hill Book Co., New York [chapter 1]Google Scholar
- 10.Boh B, Sumiga B (2008) Microencapsulation technology and its applications in building construction materials. RMZ—Mater Geoenviron 55(3):329–344Google Scholar