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Determination of Hydraulic Conductivity of Recycled Clay Bricks and Recycled Concrete Aggregate for base Course Materials

This work deals with the determination of hydraulic parameters of base course materials made by recycled clay brick (RCB), recycled concrete aggregates (RCA) and mixture of both of them. The specimens made, show that the saturated hydraulic conductivities are closely related to the grain size distribution according to Hazen’s empirical equation. The experimental ksat values are very similar to the theoretical values obtained. Results from the soil water characteristic curves (SWCC) show that the desorption of water from the specimens increase when the percentage of bricks on the blend increase. The sol water characteristic curves (SWCC) from experimental data are compared to the values obtained from Genuchten model. They show a very good fitting curve and the pore size distribution parameter (n) from Genuchten model which is 1.70, 1.75, 1.76, 1.93, and 2.21 respectively for 100%RCA, 5%RCB + 95%RCA 15%RCB + 85%RCA, 30%RCB + 70%RCA, and 100%RCB show that the porosity of the material increase with the percentage of bricks in the mixture. In sum, recycled clay brick cannot be used alone as base course material due to its high porosity and low density.


Auteur(s) : Mababa DIAGNE, Ibrahima DIA
Pages : 152 - 158
Année de publication : 2018
Revue : European Journal of Scientific Research
N° de volume : 150
Type : Article
Mise en ligne par : DIA Ibrahima