Effect of Plasters/Coatings on the Thermo-Physical Behavior of Light Weight Pond Ash Blocks Based on Non Autoclaving Technique

Abstract:

In the present study effect of different plasters like cement plaster, mud, cow dung and coatings like paint, hydrated lime, charcoal on the thermo – physical properties such as thermal conductivity, overall thermal transmittance, resistance of Light Weight Blocks (LWB) using pond ash has been evaluated. Result of the study state that, cow dung is the best amongst all other plasters used. Cow dung increases thermal resistance of Light Weight Block (LWB) from 0.391 to 0.505 m²K/W. Thermal resistance increased by using other plasters lies between 0.391 to 0.505 m²K/W. The study of curing of LWB from 56 days to 90 days has been made and it is found that thermal conductivity is reduced by 5% and thermal resistance is increased by 3% comparing the duration of curing from 56 to 90 days. Further, effect of activator on the compressive strength & demolding time has also been studied. When activator is used, there is an increase in compressive strength at 56 & 90 days at all levels of replacement when compared to without activator. Reduction in demolding time from 48 hrs. varies between 6 – 12 hrs.

• Periodical: Key Engineering Materials (Volume 678)
• Pages: 78-87
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.678.78
• Online since: February 2016
• Authors: Vivek Sood*, B.M. Suman, Ashok Kumar
• Keywords: Light Weight Blocks (LWB), Overall Thermal Transmission, Pond Ash, Thermal Conductance, Thermal Resistance

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