Utilization of waste materials as a substitute for the sand drain in clayey soil

Abstract

The practice of pre-compression with sand drains is a widely accepted soil stabilization method for improving soft soil deposits. The scarcity of quality sand contributed to the substitution of a more cost-effective material. An effort was made in the present investigation to utilize waste products like quarry dust (QD), coir pith (CP), fly ash (FA), and rice husk ash (RHA) as the vertical drain in clayey soils. A sand drain (SD) has been used for comparison purposes. Kuttand Clay (KC) and Cochin marine clay (CMC) was selected for the study. Tests were conducted on conventional oedometer cells with a diameter of 6 cm and a height of 2 cm using vertical and radial consolidation models. In addition, this paper demonstrated the effect of the density of drain on radial consolidation characteristics. From the analysis, it was observed that the rate of consolidation increases with the inclusion of any drain material. The radial coefficient of consolidation using sand, quarry dust, and coir pith drain shows a higher value when comparing with the other drain material, which can be owing to their high permeability. The present study can recommend that the quarry dust and coir pith drain, or maybe the combination can be a better alternative for the sand drain.

Study on the Combined Effect of Municipal Solid Waste Incineration Bottom Ash and Waste Shingle in Hot Mix Asphalt

“…Willis et al [20] proposed that using RAP and RAS in HMA can significantly reduce the construction cost by up to 35%. Some of the studies have also investigated the positive effect of nanoclay in asphalt mixture [21,22] and potential use of those recycling materials in geo-applications [23,24]. Particularly, ash has been used in stabilizing subgrade soils of pavement systems [25,26].…”

“…Therefore, the research objective is to investigate the effect of the combined use of MSWI BA and RAS in HMA, investigating the mechanical performance of the HMA. Some of the studies have also investigated the positive effect of nanoclay in asphalt mixture [21,22] and potential use of those recycling materials in geo-applications [23,24]. Particularly, ash has been used in stabilizing subgrade soils of pavement systems [25,26].…”

“…Some of the studies have also investigated the positive effect of nanoclay in asphalt mixture [ 21 , 22 ] and potential use of those recycling materials in geo-applications [ 23 , 24 ]. Particularly, ash has been used in stabilizing subgrade soils of pavement systems [ 25 , 26 ].…”

Avoid construction failure by controlling settlement with a geosynthetic enchased geofoam granular column

“…Islam S., et al (2022) and Aparna R.P and Bindu J. (2023) modeled vertical drains in a consolidation equipment (oedometer) by utilizing waste materials as vertical drains [22,23].…”