Effect of compactive effort on strength indices of laterite treated with calcium carbide waste

Joel, M.; Joseph, L. J.

doi:10.4314/gjer.v14i1.6

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…The results are similar to those reported by [15,31,37]. In general, the compaction curve trend agrees with the findings of several researchers [3,19,23,37,48,50]. From Figure 3a, it can be observed that with the addition of 5, 17 Content of the soil-metakaolin mixtures largely depend on the soil type, the fineness of the metakaolin particles and the plastic nature of the soils.…”

Section: Resultssupporting

confidence: 91%

Effect of Metakaolin on Strength Properties of Lateritic Soil Intended for Use as Road Construction Material

Abdulkarim

Umar

Muhammed

et al. 2022

PoS

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An excellent all-weather road is essential in providing reliable transportation services that comprise social and economic development elements. However, in most cases, the road has to be constructed on a soft foundation soil where large deformations usually occur, which causes increases in maintenance costs and leads to interruption of traffic service, especially during the wet season. It is necessary to stabilize or improve the in-situ soils. This study explores the potential of using metakaolin to improve the geotechnical properties of lateritic soil for road construction materials. The soil classifies as A-6(4) and CL according to the American Association of State Highway and Transport Officials and the Unified Soil Classification System. The soil was treated with 5, 17.5 and 30 % concentrations of metakaolin by dry weight and was compacted using three compaction energies: British Standard Light (BSL), West African Standard (WAS) and British Standard Heavy (BSH). California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS) tests were carried out to evaluate the effect of metakaolin on the soil investigated. Results showed a general improvement in the engineering properties of the soil with an increase in metakaolin content, particularly when compacted at the BSH energy level. However, the results did not meet the 1500-3000 kN/m 2 7 days UCS criterion stipulated by the Nigerian General Specification for road base courses. However, 30 % lateritic soil/metakaolin blended soil compacted using WAS and BSH energy levels suffice for use as sub-base in road construction, having met the 750-1500 kN/m 2 7 days UCS criterion stipulated by the Nigerian General Specification. The Peak CBR value for the treated soil, compacted using the three energy levels of BSL, WAS, and BSH, occurred at 30 % metakaolin concentration with corresponding soaked CBR values of 17, 23 and 31 %. The Nigerian General Specification recommends a nominal strength criterion of a soaked CBR value of 30 and 80 % to be attained by material to be used as subbase and base course in road construction. Based on the above criterion, only the 30 % metakaolin treated blend compacted at the BSH energy level met the 30 % requirement for sub-base materials.

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Section: Resultssupporting

confidence: 91%

Effect of Metakaolin on Strength Properties of Lateritic Soil Intended for Use as Road Construction Material

Abdulkarim

Umar

Muhammed

et al. 2022

PoS

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show abstract

“…This is also in agreement with the findings reported by Ijimdiya and Igboro [50]. It is very clear from the results that the stabilised soil can be used as sub-base course based on the recommendation of Gidigasu and Dogbey [51], which proposed a minimum CBR value of 20-30% for sub-base course and 60-80% for base course of flexible pavement when compacted at optimum moisture content and 100% West African standard. Figure 8 presents the influence of compactive efforts, ordinary Portland cement and steel slag (SS) on the soaked CBR of the soil.…”

Section: California Bearing Ratiosupporting

confidence: 90%

“…(vi). It is very clear from the results that the stabilized soil (at 5% Steel slag / 2% cement contents and beyond) satisfies the requirement to be used as sub-base course based on the recommendation of Gidigasu and Dogbey [51], which proposed a minimum CBR value of 20-30% for sub-base course and 60-80% for base course of flexible pavement when compacted at optimum moisture content and 100% West African standard.…”

Section: Discussionmentioning

confidence: 97%

Evaluation of the Statistical Significance of Compactive Efforts, Slag and Cement on the Geotechnical Features of Laterite Soil

ADEDOKUN¹,

APATA²,

OGUNDALU³

et al. 2022

JESR

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This study investigated the statistical significance of compactive efforts, steel slag and cement on the geotechnical features of the laterite soil. Steel slag and cement were incorporated into the soil. Some geotechnical tests were performed on slag-cement-soil samples. Findings showed that the liquid limit (LL) and plasticity index (PI) decreased with increasing slag content, while cement addition increased LL and PI. As compactive efforts increased, MDD and CBR increased with a corresponding decrease in OMC. A more significant influence of the compactive effort and steel slag on the geotechnical features of the laterite than that of cement was observed.

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Effect of compactive effort on strength indices of laterite treated with calcium carbide waste

Cited by 2 publications

References 9 publications

Effect of Metakaolin on Strength Properties of Lateritic Soil Intended for Use as Road Construction Material

Effect of Metakaolin on Strength Properties of Lateritic Soil Intended for Use as Road Construction Material

Evaluation of the Statistical Significance of Compactive Efforts, Slag and Cement on the Geotechnical Features of Laterite Soil

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