Permeability Characteristics of Construction Waste as a Column Material in Expansive Clay

India generates 120–150 million tonnes of construction and demolition waste (CDW) every year and this make-up 25% of the landfill waste. Considering the availability of the waste, laboratory studies are performed to understand the functions of the construction waste as a column member installed in a permeability mould with expansive soil under soft (0.4) and medium-stiff (0.6) consistencies (Ic). In this test, two different CDW materials are chosen; M 30 grade concrete waste and demolished bricks. The soil is filled in the permeability mould of desired consistency and a column is formed with the chosen CDW of 31.75 mm, and the permeability characteristics of the modified soil are found by conducting a variable head test. The formed column makes a unit cell, where the column is allowed to cure for three days and the permeability characteristics is found; it is further compared with the virgin soil and the conventional column material installed in expansive clay under similar conditions. The permeability characteristics of virgin clay with 0.6 Ic showed higher values than the soil with 0.4 Ic. With the inclusion of bricks and concrete waste, the permeability value decreases in a large range for a higher Ic.