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A Study of the Influence of Additive Coal Percentage and Its Grain Size on Compressive Strength for Building Brick | ||
| Journal of Kufa - physics | ||
| Article 1, Volume 4, Issue 1, 2012, Pages 11-20 | ||
| Author | ||
| Tagreed Muslim Al-Saadi | ||
| Abstract | ||
| The influence of additive coal percentage and its grain size on compressive strength of building bricks were studied .Soil was used as a basic material and coal was added to it, with weight percentage of (0.1,0.2,0.5,1,3,5,10)% for three grain sizes. The samples were compressed in cubic shapes of 5cm edge, fired at (1100оC). Porosity , water absorption , lost weight and compressive strength were calculated for each sample. It was found that there is a close relationship between compressive strength and additive coal percentage and its grain size ,where compressive strength increases for low weight percentage (0.2-0.5)% and fine grain size (75-150) μm and the highest value of compressive strength was recorded with the range of (400kg.f/cm2). On the other hand compressive strength decreases with the additive coal and grain size increase where the samples of high percentage of weight (10%) and coarse grain size(300-600) μm has recorded the less value of compressive strength . So the obtained brick has a high quality of Porosity ,water absorption and compressive strength that the Iraqi standard of qualification No.(25) class A. | ||
| Keywords | ||
| Additive Coal Percentage; Grain Size; compressive strength; Building Brick | ||
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