Compressive Strength and Permeability of Sand-Cement-Clay Composite and Application for Heavy Metals Stabilization

 

Bassam Z. Mahasneh

Department of Civil Engineering, Mutah University, Al-Karak, 61710, Jordan
email: bassam67@mutah.edu.jo

and

Reyad A. Shawabkeh

Department of Chemical Engineering, Mutah University, Al-Karak, 61710, Jordan
email: shawabk@mutah.edu.jo

ABSTRACT

This study was carried out to test the feasibility of a mixture of sand, cement and clay for their permeability and compressive strength. Various samples with different mass ratios of this mixture were tested to determine their permeability, and compressive strength. The best proportions of 25% sand 50% cement and 25% clay show the highest compressive strength and low permeability in comparison with the other proportions. The maximum compressive strength was for the sample that contains 25% sand, and 75% cement with a value of 12.83 kN/m2 obtained after two weeks of curing, while samples that having 25% sand, 25% clay and 50% cement showed also quite good compressive strength with values of 11.05 kN/m2. This composition showed a permeability value of 9.15x10–6 cm/sec. The cation exchange capacity was estimated for this mixture to be 53.1 meq/100g. This composite has a low cost, efficient and durable.

Keywords: Keywords: Permeability, Compressive strength, Sand, Cement, Clay, Cation Exchange Capacity.

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