You have no items in your shopping cart.
ABSTRACT
Pervious concrete have been frequently considered as being weak in strength and not fit to act as a structural element as have been conceived through the mere observations of the absence of fine aggregate in the concrete. But this is not often correct as some results have proven such assertions to be wrong. Pervious or self-draining concrete produces good structural quality in terms of strength. However, the absence of the fine aggregate usually leaves it with various degree of porosity due to the presence of numerous voids. It has however found applications in road and pavement constructions in different parts of the world.
Pervious concrete does not undergo slump test and some other common workability tests, hence, the degree at which it can be worked with is not easily ascertained, though through some other more sophisticated tests, it can be estimated. The voids in self-draining concrete can be reduced by using lower grades of concrete and through proper vibration and curing under standard conditions.
The results obtained from the compression test of the cube samples show a slight reduction in the strength of the concrete as compare to a conventional concrete of same mi ratio. This can be attributed to the numerous void ratios and size of the aggregate used. However, the result shows that the concrete is workable and its strength can be improved more by addition of some accelerating admixture and adherence to proper and feasible mix ratios.
