An Investigation into the Thermal Performance of Rubber-Concrete

Amana Ocholi, Stephen Pinder Ejeh, Sanni Mukaila Yinka

Abstract


The Thermal properties of concrete incorporating pulverized automobile tires as partial replacement for mineral coarse aggregate (granite) was investigated in other to assess its suitability as a construction material and also a solution to the environmental problems constituted by non-biodegradable waste tires. Replacement was made at: 5%, 10%, 15%, 20% and 25% by volume. Thermal properties were measured base on the transient line heat source (TLS) method using a KD 2 Pro thermal analyzer. Thermal properties most especially the thermal conductivity of concrete (1.816W/mk) have been greatly reduced to 1.283W/mk indicating 29.4% reduction after 25% partial replacement of mineral aggregate with the rubber particles which makes it a better insulator while the specific heat capacity of concrete (3.040 MJ/m3.k) have been reduced to 2.137MJ/m3k indicating 29.7% reduction with same 25% rubber particles which may adversely reduce thermal mass effect. Other thermal properties such as thermal resistivity increased by 29.4%, thermal diffusivity decreases by 65.1% while thermal effusivity decreases by 37.6% with 25% rubber particles content in concrete. The result indicates that the potential use of such composite material for building applications is viable.

DOI: 10.5901/ajis.2014.v3n5p29


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Academic Journal of Interdisciplinary Studies ISSN 2281 3993(Print) ISSN 2281-4612(Online)

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