Effect of Lime on the Compaction and Strength Behaviour of Red Earth treated with Mine tailings

Ramesh, H. N.; Krishnaiah, Arkanti; Supriya, M. D.

doi:10.9790/1684-0240106

Cited by 5 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laterites are characterized by low swell potential, low shrinkage and high density when compacted at optimum water content. Previous studies on laterites showed that some of their properties can be improved upon by using materials such as blast furnace slag, iron ore waste, tincal ore waste, fly ash, waste wood ash, mine tailings, rice husk ash, coal waste, bagasse ash, and sugar cane straw (Kula et al, 2002;Osinubi & Eberemu, 2009;Ramesh et al, 2012;Hamdi and Srasra, 2013;Roy, 2013;Etim, 2015;Oluremi, 2015;Umar et al, 2015;Modarres & Nosoudy, 2015;Umar et al, 2016). Several research groups have reported that using alternative supplementary cementitious materials (SCMs) to upgrade the properties of soils could reduce construction cost and enhance the performance of hydraulic barrier systems (Yeheyis et al, 2010;Ilić et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Hydraulic Conductivity of Compacted Laterite-Metakaolin Mixtures for Solid Waste Leachate Containment

Umar¹,

Elinwa²

2020

FUOYEJET

View full text Add to dashboard Cite

This paper presents the results of a study conducted to investigate the benefits of using metakaolin (MK) with laterite as liner material for containment of municipal solid waste (MSW). Laboratory tests were conducted on laterite specimens treated with MK at concentrations of 0 - 20 % by weight of the soil and compacted using four types of compaction energies. Hydraulic conductivity was determined based on permeation of the compacted laterite - MK mixtures with deionized water (DW) and municipal solid waste leachate (MSWL), respectively. Deionized water was the reference permeant fluid. The results showed that hydraulic conductivity generally decreased with increase in the percentage addition of MK to the soil. From an economic and sustainability point of view, it has been found from the results that 5 % MK can be added to soil and compacted at moulding water content of 14.1 % using the West African Standard (WAS) compaction energy to achieve the regulatory hydraulic conductivity of less than or equal to 1 x 10-9 m/s for compacted soil liner. The natural logarithm of the hydraulic conductivity experimental results were computed and used to develop regression equations for estimating hydraulic conductivity given MK contents and compaction energies. The results of the two-way analysis of variance (ANOVA) test carried out at 5 % level of significance showed that calculated F-statistics are statistically significant and the measured values of hydraulic conductivity compare well with the predicted values. The developed models can therefore be used to give good estimates of hydraulic conductivity of soils having similar properties with the laterite investigated in this study. Therefore, the developed models can be used to give good estimates of hydraulic conductivity of soils having similar properties with the laterite investigated in this study. Keywords _ Deionized water, Hydraulic conductivity, Leachate, Metakaolin, Municipal solid waste.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of the Hydraulic Conductivity of Compacted Laterite-Metakaolin Mixtures for Solid Waste Leachate Containment

Umar¹,

Elinwa²

2020

FUOYEJET

View full text Add to dashboard Cite

show abstract

“…Ramesh, Krishnaiah and Supriya [7] studied that the addition of various percentage of lime to the Red Earth treated with optimum percentage of mine tailings. Mine tailings was collected from an open dump from Kolar Gold Fields (KGF).…”

Section: Introductionmentioning

confidence: 99%

Utilization of Bergama Gold Tailings as an Additive in the Mortar

Kunt¹,

Yıldırım²,

Dur³

et al. 2015

CBU J of Sci

View full text Add to dashboard Cite

Bergama is the first gold mine in the history of Turkish Republic and currently one of the operating gold mine in Turkey. About 3 tons of gold and equal amounts of silver are mined each year. The estimated ore reserves at the Bergama gold mine are 2.4 million tons with about 10 g Au per tonne of ore. About 277.882 tons of the tailings slurry of gold mine treatment is produced every year during the recovery of gold. Increasing amounts of tailings slurry cause a problem in large disposal areas. Therefore, the recycling of this kind of slurries into useful materials is quite important in terms of economic and environmental aspects.The aim of this study was the investigation of utilization of the gold tailings as an additive material in Portland cement production. For this purpose, the effects of the gold tailings on the compressive strength properties of Portland cement were investigated. Cement mortars were prepared with Portland cement (CEM I 42,5 N) and dried gold tailings. Gold tailings with different ratios (5, 10, 15, 20, 25%) were added as cement additive in the mortar. The fresh properties of mortar such as consistency and setting time were investigated by using Flow table and Standard Vicat apparatus. The mortars were tested for compressive and flexural strength values after 3, 7 and 28 days. Mineralogical composition and microstructure of the 28-day mortars were determined by X-ray diffraction (XRD) and scanning electron microscope (SEM). According to results, it can be concluded that the tailings are eligible for mortar aggregate and the optimum ratio of gold tailings is 5%.

show abstract