Materials and Structures

, Volume 49, Issue 5, pp 1793–1803 | Cite as

Use of paraffin impregnated lightweight aggregates to improve thermal properties of concrete panels

  • Piti Sukontasukkul
  • Ekkachai Intawong
  • Piyarat Preemanoch
  • Prinya Chindaprasirt
Original Article
  • 344 Downloads

Abstract

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.

Keywords

Phase changed material Paraffin impregnated aggregate Impregnation technique Thermal properties Sound transmission loss 

Notes

Acknowledgments

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.

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Copyright information

© RILEM 2015

Authors and Affiliations

  • Piti Sukontasukkul
    • 1
  • Ekkachai Intawong
    • 1
  • Piyarat Preemanoch
    • 2
  • Prinya Chindaprasirt
    • 3
  1. 1.King Mongkut’s University of Technology North BangkokBangkokThailand
  2. 2.Ramkamhaeng UniversityBangkokThailand
  3. 3.Khon Kaen UniversityKhon KaenThailand

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