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Table 4 Mean Porosity and permeability of pervious concrete.
Table 2 summarises the compositions of pervious concrete mixes.
Table 3 Porosity and compressive cylinder strength of pervious concrete.
Permeability of pervious concrete is influenced by the porosity and the use of recycled concrete aggregate had no significant effect on the permeability of pervious concrete.
Reduction in the aggregate size decreased the porosity of pervious concrete and as the consequence the strength of pervious concrete is increased.
Open image in new window Fig. 4 Effect of aggregate type on strength of pervious concrete.
With the increase in the porosity, the strength of pervious concrete is reduced.
Table 4 shows the mean permeability of pervious concrete using falling head method.
The type of aggregate has no significant effect on the permeability of pervious concrete.
The investigated properties of pervious concrete are compressive strength development with age, porosity and water permeability.
The results showed that the strength of pervious concrete is affected by the density of aggregate.
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