Incorporating of Two Waste Materials for the Use in Fine-Grained Soil Stabilization

Abstract

The present experimental work briefly aimed to utilize two different waste materials; calcium carbide residue (CCR) and the locally available rice husk ash (RHA) to produce an eco-friendly binder for the use in fine-grained soil stabilization. The effect of different binary mixtures, produced by mixing CCR and RHA with different proportion, on the geotechnical properties of a fine-grained soil was investigated. For the unconfined compressive strength (UCS) test, the soil specimens were subjected to various curing periods (7, 21, 28 and 90 days). The microstructure of the soil treated with the optimum mixture was carried out by utilizing scanning electron microscopy (SEM) test. Results of UCS test showed an interesting growth after the treatment of binary mixtures relative to those samples treated with only CCR. Plasticity index (PI) was found to decrease noticeably with use of CCR only while further reductions in PI were achieved after the RHA incorporation. Clear variations in the microstructure of the treated soil were revealed from SEM testing approving the creation of cementitious products. The results of the current study indicated that the wastes utilized in this investigation could be potentially used as alternatives to the conventional binders and final disposition with economic and environmental advantages.

Weak Soil Modifications Using Sustainable Recycled Municipal Solid Waste Ash

“…At the 14 th day curing period, the densification of matrix further increased with the formation of new thin coatings noticed on the surface, which was not present at the 7 th . Based on analysis, an increase in microstructural morphology of mix led to increase in the UCS, as also validated by Jafer et al [51]; Vichan et al [52]; Katz et al [53].…”

The future of eco-friendly cold mix asphalt

“…Ecological benefits manifest through the elimination of the need for 680 expensive waste disposal as these materials contain toxic ingredients that can be hazardous to 681 both biodiversity and human health when disposed of in lakes, streams or landfills. These 682 materials have cementitious and pozzolanic properties depending on their reactions [126,127]. 683…”

Potential of Composted Agricultural Wastes to Control Stem Rot and to Promote Growth in Tomato

“…The increasing solid wastes are causing soil pollution and groundwater contamination [2,3]. Thus, researchers have paid attention to develop new materials by utilizing wastes and by-products [4,5]. So, composting is considered to be the most efficient treatment in producing an agronomically beneficial organic amendment and environmentally safe.…”