Predictive Shear Strength Models for Tropical Lateritic Soils

Ojuri, Oluwapelumi O.

doi:10.1155/2013/595626

Cited by 7 publications

(6 citation statements)

References 17 publications

(17 reference statements)

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“…The CBR value is the resistance to a penetration of 2.5 mm of a standard cylindrical plunger of 50 mm diameter expressed as a percentage of the known resistance of the plunger to 2.5 mm in penetration in crushed aggregate (taken as 13.2 kN). The strength of a subgrade, sub base and base course materials for road construction is expressed in terms of their CBR value [18].…”

Section: California Bearing Ratio Testmentioning

confidence: 99%

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Geotechnical Properties of Lateritic Soil Stabilized with Ground-Nut Husk Ash

Nnochiri

Ogundipe

2016

Civ Eng J

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This study assesses the geotechnical properties of lateritic soil stabilized with Ground-nut Husk Ash. Preliminary tests were carried out on the natural soil sample for identification and classification purposes, while consistency limits tests were thereafter carried out as well. Engineering property tests such as California Bearing Ratio (CBR), Unconfined Compressive Strength (UCS) and compaction tests were performed on both the natural soil sample and the stabilized lateritic soil, which was stabilized by adding Ground-nut Husk Ash, GHA, in percentages of 2, 4, 6, 8 and 10 by weight of the soil. The results showed that the addition of GHA enhanced the strength of the soil sample. The Maximum Dry Density (MDD) reduced from 1960 kg/m3 to 1760 kg/m3 at 10% GHA by weight of soil. The Optimum Moisture Content (OMC) increased from 12.70% to 14.95%, also at 10% GHA by weight of soil. The unsoaked CBR values increased from 24.42% to 72.88% finally, the UCS values increased from 510.25 kN/m2 to 1186.46 kN/m2, for both CBR and UCS, the values were at 10% GHA by weight of soil. It was therefore concluded that GHA performs satisfactorily as a cheap stabilizing agent for stabilizing lateritic soil especially for subgrade and sub base purposes in road construction.

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Section: California Bearing Ratio Testmentioning

confidence: 99%

“…It cannot be made for cohesionless soil or on clay and silt which are too soft to stand in the machine without collapsing before the load is applied. [20].…”

Section: Unconfined Compressive Strength Testmentioning

confidence: 99%

Geotechnical Properties of Lateritic Soil Stabilized with Ground-Nut Husk Ash

Nnochiri

Ogundipe

2016

Civ Eng J

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“…Hence, they need better experience to use for engineering purposes. This is why the study and understanding of their characteristics have reliably been the effort of care in geotechnical engineering activities and practice (5)(6)(7) . The index and shear properties are essential areas of geotechnical engineering studies that are needed to identify, characterize, design, and construct on soil and soil material (8) .…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Mapping of Index and Shear Behavior of Soils a Case in Gimbichu Town, Ethiopia

Gaenamo¹,

Dirate²,

Dasho³

et al. 2022

IJST

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Objectives: To study experimental investigation on index and engineering properties of fine-grained soils by conducting laboratory tests and to prepare a soil spatial map using ArcGIS software of Gimbichu town, Ethiopia. Methods: Hence, ten test pits were selected according to the variation of the soil and the distribution of the dwellings. The soil samples were collected by direct manual excavated to 1.5m and 3.0m depth on which both laboratory and field tests were conducted for index and shear properties. Findings: Index properties revealed that soils in the study area are mostly silt soils with high plasticity and partly low plasticity. It is indicated that the soils are medium to very stiff with unconfined compressive strength of 53.70 to 216.40kPa and undrained shear strength of 26.67 to 108.20 kPa. Permeability and consolidation investigation results presented soils in the town are silt group. The spatial soil property map is created for experimentally determined results at 1.50m and 3.0m depths using ArcGIS software to retain soil properties in order to earn time and cost of the investigation in the field and laboratory. These maps are required for recognizing, identifying, and classification of soil categories within delineated parts of the current study town. Novelty: Investigation and ArcGIS spatial mapping for soil properties are essential for future boosting of the design and construction buildings of this town that was not applied before in investigation lagged areas like Gimbichu town.

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“…Measuring and modeling the plasticity of clays subjected to compression loads have been examined and insights on extrusion up-scales/important guidelines and properties were obtained. 2,7,[14][15][16] Geotechnical properties of some of Nigerian lateritic soils and clay minerals have been reported although with major applications in building and construction, recharge sites for regional aquifer, bacterial removal from water, and adsorption studies of heavy metals. [17][18][19][20][21][22][23][24][25] Good results were obtained when the materials are modified with additives.…”

Section: Introductionmentioning

confidence: 99%

Plasticity characterization of certain Nigeria clay minerals for their application in ceramic water filters

et al. 2021

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Plasticity is an essential property of clay that determines its suitability for water filtration. There are no published works on the plastic behavior of clays from the study locations. The plastic behavior of seven Nigerian clays was examined using plasticity indices and compressive stress parameters in relation to chemical compositions and moisture content. The objective is to determine plastic behavior of some Nigerian clays and their suitability in production of Expanded Clay Aggregates (ECA) for water filters. Compressive stresses and deformation parameters were determined experimentally and compared theoretically. Atterberg limits (D 4318) were used to determine the plasticity indices. Chemical compositions of the samples were examined with XRF and correlated with plasticity and mineral contents of the clays. The clays are aluminosilicates with SiO2/Al2O3 ratio of 1.61 to 3.03 and plastic indices of 8 to 49. Low plastic indices (8–11) and low compressive stresses parameters were observed for kaolinite clays (0.002 MPa) due to their low affinity for water while zeolite rich clays showed high plastic indices (46 and 49) for Obowo and Minna and sharp difference in their compressive stresses parameters (0.15 and 0.03 MPa) at optimum moisture contents of 57% and 53%, respectively. Despite varying moisture content, chemical and mineral compositions, all curves showed similar trends apart from kaolinites at 40% moisture content. Relationships exist among microstructural properties, chemical composition, moisture content, compressive strength, and plasticity indices of the clays. The plastic behaviors show they are suitable for development of ECA for water filters.

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Predictive Shear Strength Models for Tropical Lateritic Soils

Cited by 7 publications

References 17 publications

Geotechnical Properties of Lateritic Soil Stabilized with Ground-Nut Husk Ash

Geotechnical Properties of Lateritic Soil Stabilized with Ground-Nut Husk Ash

Experimental Investigation and Mapping of Index and Shear Behavior of Soils a Case in Gimbichu Town, Ethiopia

Plasticity characterization of certain Nigeria clay minerals for their application in ceramic water filters

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