Analysis of physical properties of Light Weight Concrete Wall Composed of Phase Change Material

Abstract

This paper aims to study the physical properties of Light Weight Concrete Wall Composed
of Phase Change Material (LWC+PCM) to prevent heat transfer into the building, and another way
to design the building that to have energy conservation and the environment. PCM is used S32 and
S44. During daytime the PCM can absorb part of the heat through the melting process, and during
night the heat is released by the solidification of the PCM. Light Weight Concrete (LWC G4)
divided into three types of size 3-7 size 5-5 size and 7-3, and consists double layer in the middle put
on the PCM position away from the walls outside the 3.0 to 5.0 and 7.0 cm. PCM mixing plaster in
the ratio 2.5 5.0 7.5 and 10.0 % (by weight). The results of the physical properties showed that the
LWC+PCM is 2.5 % are compressive density, flexural strength and absorption water similar to
LWC G4 type 0.7, and compressive strength less than LWC G4 type 0.7, for S32 case were size 3-7
value 4.91 N/mm2, size 5-5 value 4.60 N/mm2 and size 7-3 value 4.70 N/mm2, and for S44 case
were size 3-7 value 4.82 N/mm2, size 5-5 value 4.79 N/mm2 and size 7-3 value 4.75 N/mm2.
Therefore, it is application possibility LWC+PCM is 2.5 % to industrial production as the good
physical properties of the industry standard TIS 1505-2541.

Keywords: Light Weight Concrete, Phase Change Material, DSC