Journal of Emerging Trends in Economics and Management Sciences: Home

Abstract:
This paper reports the result of investigations carried out on the effect of temperature increase on the Poisson?s Ratio of laterized concrete. Values of Poisson?s Ratio are needed for the structural analysis and design of many types of concrete structures. The test specimens were made with sieved samples of selected grain sizes range of lateritic soil used as fine aggregate to replace sand in normal conventional concrete. Batching was by weight. Three mix ratios of (1:1.5:3), (1:2:4) and (1:3:6) were used. Water/cement ratio of 0.6 was used throughout the experiment. The cylindrical shape specimens of size 150mm x 50mm were tested at 28days curing age after heated to various high temperatures 400 C, 600C, 800 C and 1000C, for 24 hours and allowed to cool for another 24 hours. The results showed that Poisson?s Ratio of laterized concrete decreases as the temperature increases. The results can be used to estimate the influence of high temperature on the structural behaviour and integrity of laterized concrete component which follow the pattern of conventional concrete at increased temperature.

Keywords: poisson�s ratio, laterized concrete, lateritic soil, compressive strength, conventional concrete

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