@article{ijml2014113,
author={{Nwoye, C. I. and Nwosu, I. E. and Nwakpa, S. O.},
title={Synergic Effect of Post-Fired Volume Shrinkage and Porosity of Bricks on Its Water Absorption Level during Service in Submerged State},
journal={International Journal of Materials Lifetime},
volume={1},
number={1},
pages={13--19},
year={2014},
url={http://pubs.sciepub.com/ijml/1/1/3},
abstract={The synergic effect of post-fired volume shrinkage and apparent porosity of bricks on its water absorption level during service in submerged state was evaluated. A clay sample was prepared and processed, following a well detailed step-wise route. Analysis of water absorption by the produced bricks while serving under submerged condition was carried out using a two-factorial empirical model expressed as ¦Î = - 1.0525 ? ¨C 2.6392 ? + 107.6801. The validity of the derived model was rooted in the core expression ¦Î ¨C 107.6801 = - 1.0525 ? ¨C 2.6392 ? where both side of the expression correspondingly approximately equal. Results generated from both experiment and model prediction indicates that water absorption decreases with decreasing apparent porosity and increasing post-fired volume shrinkage. Evaluated results indicated that the correlations between water absorption and post-fired volume shrinkage & apparent porosity and the standard error incurred in predicting water absorption for each value of the post-fired volume shrinkage & apparent porosity considered, as obtained from experiment, derived model and regression model were all > 0.95 as well as 0.0704, 0.0693 and 4.38 x 10-5 & 0.0028, 0.2201 and 2.58 x 10-5 % respectively. The maximum deviation of the model-predicted water absorption (from experimental results) was less than 8%. This translated into over 92% operational confidence for the derived model as well as over 0.92 synergic effective coefficients for the dependence of water absorption level of the submerged bricks on post-fired volume shrinkage & apparent porosity.},
doi={10.12691/ijml-1-1-3}
publisher={Science and Education Publishing}
}