Stabilization Potential of Cement Kiln Dust Treated Lateritic Soil 

Abstract

A dark reddish-brown lateritic soil collected from existing borrow pit abandoned by Reynold Construction Company Ltd behind New WAZOBIA Market on Latitude 08008′N and Longitude 04014′E along Ogbomoso-Ilorin Express road, Ogbomoso, Oyo State. Nigeria was treated with cement kiln dust (CKD), a by-product of long wet kiln, obtained from West African Portland Cement Organisation (WAPCO), Ewekoro, Ogun State, Nigeria, under varying moulding water content.The results show gradual reduction in the plasticity index of the samples, decrease in the maximum dry densities (MDD) with corresponding increase in the optimum moisture contents (OMC) of the treated soil samples. The unconfined compressive strength (UCS) of the treated samples increases with both increase in the treatment content as well as compactive effort from British Standard (BS) to West African Standard (WAS) however, there was reduction in the UCS with varying moulding water content as the water content increases and decreases relative to optimum moisture content. The maximum UCS was obtained at optimum moisture content.Cement kiln dust though regarded as waste can therefore serve as potential material in the stabilization of the lateritic soil when compacted at moisture content within its OMC.

Strength and Workability Improvement Potential of Admixture of Corn Cob Ash and Cement for Stabilizing Lateritic Soil

“…Also, the flocculation and agglomeration of soil-CCA, pozzolanic reaction between soil, CCA and the lime generated from the hydration of cement, as well as the cementation of the soil particles by the hydrated cement produced a more dense mixture though at higher moisture content. Similar results were reported (Akinwumi and Aidomojie 2015;Oluremi et al, 2016a;Oluremi et al, 2016b).…”

“…The alternatives which include fly ash, geofiber, and polymer stabilizers. saw-dust ash, rice husk ash, lime and cement kiln dust (Osinubi and Medubi, 1997;Osinubi, 2000;2006;Brooks, 2009;Osinubi, et al, 2009;2011;Oluremi et al, 2012;2016a;2016b;Osinubi et al,2017). Application of recycled and waste products has improved chemical and mechanical stabilization techniques.…”

Stabilization of Lateritic Soil Admixed with Maize Husk Ash

“…to a soil to change its index properties (Alhassan and Mustapha, 2011), while soil stabilization is the treatment of soils to enable improvement in their strength and durability such that they become totally suitable for construction beyond their original classification. Soil stabilization, which refers to a process whereby the physical and/or chemical properties of a soil are modified in order to suit the purpose for years, cement and lime have been the two main materials used for stabilizing soil (Eze-Uzomaka and Agbo, 2010; Joel and Agbede, 2011;Oluremi et al, 2012;Joel and Edeh, 2015;Oluremi et al, 2016a;b). However, these materials have rapidly increased in price due to the sharp increase in the cost of energy and high demand for them (Neville, 2000).…”

Effect of Cement Kiln Dust on the Geotechnical Properties of Clay in Ede, South-western, Nigeria

“…The major waste management method, which has received the attention of environmental researchers, is the reuse of waste materials. This is hinged on environmental considerations related to increased scarcity of natural resources, increasing cost of landfill in most countries (Arulrajah et al, 2011;Oluremi et al, 2012;Kumpala et al, 2013;Oluremi et al, 2016a). The application of agro and industrial wastes in the stabilization of soil is an environmentally friendly method of disposal of large amounts of substances that would have constituted pollution to land, water and air.…”

“…According to EPA (1993), approximately 60-67 (8-8.4 million tons) percent of the total CKD generated is reused in USA. While the bulk of CKD is recycled into the cement manufacturing process, a significant amount estimated to be up to 4.6million metric tons and which corresponds to approximately 4.2% of the raw materials used for the production of cement is generated as waste (Parsons et al, 2004;Oluremi et al, 2016a). The major method for disposing CKD is by dumping ona dump site.…”