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The West African Compactive Effort:

The West African Standard Compaction Test - Structville

Mar 19, 2020  The West African Standard (WAS) compaction test is a type of compaction procedure that utilises intermediate compaction energy (compactive effort) for densification of soils. It has been recommended for densification of soils for highway construction in Nigeria and some other West African Countries.

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Effect of Compactive Effort and Curing Period on the ...

高达10%返现  Nov 14, 2015  Three compactive energy was used (simulating the variation in compactive efforts that might occur in the field) namely, British standard light, West African Standard and British Standard Heavy. British Standard Light (BSL) and British Standard Heavy (BSH) effort were carried out in accordance with British Standard (BSI 1990 ).

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The Influence of Compactive Effort on Compacted

高达10%返现  Dec 27, 2014  The British standard light is the effort derived from 2.5 kg rammer falling through 30 cm onto three layers, each receiving 27 uniformly distributed blows; (BS 1990a, b) The West African standard compactive effort (WAS), was carried out using energies derived from a 4.5 kg mass rammer falling through a height of 45 cm in a 1,000 cm 3 mould.

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Influence of Compactive Efforts on Cement- Bagasse Ash ...

Authors: Moses, G, Osinubi, K. J. Abstract: A laboratory study on the influence of compactive effort on expansive black cotton specimens treated with up to 8% ordinary Portland cement (OPC) admixed with up to 8% bagasse ash (BA) by dry weight of soil and compacted using the energies of the standard Proctor (SP), West African Standard (WAS) or “intermediate” and

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Influence of Compactive Efforts on Compacted

compactive effort respectively. The CBR values of 20 and 52% at treatment level of 8% CKD for WAS and BSH compactive effort satisfy the recommended minimum CBR value of 20-30% when compacted at optimum moisture content and 100% West African standards for sub-base material. The durability of specimens determined by

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EFFECT OF COMPACTIVE EFFORT ON STRENGTH INDICES OF ...

The effect of British Standard Light (BSL), West African Standard (WAS) and British standard Heavy (BSH) compactive efforts on the strength indices oflaterite treated with 2, 4, 6 and 8 % calcium carbide waste (CCW) was studied.

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Influence of Compactive Efforts on Cement- Bagasse Ash ...

Authors: Moses, G, Osinubi, K. J. Abstract: A laboratory study on the influence of compactive effort on expansive black cotton specimens treated with up to 8% ordinary Portland cement (OPC) admixed with up to 8% bagasse ash (BA) by dry weight of soil and compacted using the energies of the standard Proctor (SP), West African Standard (WAS) or “intermediate” and

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(PDF) Soil-Water Characteristics Curves for Reddish Brown ...

For the West African Standard compactive effort which is the conventional energy level commonly used in the region (Ola, 1980; Osinubi, 1998) consist of energy level derived from a 4.5 kg rammer falling through 450 mm height onto five layers using 10 blows each.

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Desiccation-Induced Volumetric Shrinkage of Compacted ...

Nov 03, 2012  The West African standard compactive effort (WAS) was carried out using energies derived from a rammer of 4.5 kg mass falling through a height of 45 cm in a 1,000 cm 3 mold. The soil was compacted in five layers, each layer receiving 10 blows.

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(PDF) Soil water characteristics curves for Compacted ...

West African Standard compactive effort which is the conventional energy level commonly used in the region (Ola, 1980; Osinubi, 1998) consist of energy level derived from a 4.5 kg rammer

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Geotechnical Evaluation of Reddish Brown Tropical Soils ...

Dec 15, 2011  For the West African standard compactive effort which is the conventional energy level commonly used in the region (Ola 1980; Osinubi 1998) consist of energy level derived from a 4.5 kg rammer falling through 450 mm height onto five layers using 10 blows each.

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The Influence of Compactive Effort on Compacted Lateritic ...

Dec 27, 2014  The paper evaluates the suitability of lateritic soil treated with up to 10 % cement kiln dust (CKD) by dry weight of soil for the construction of waste containment facilities compacted at three energy levels. Laboratory tests were carried out on specimens prepared at molding water contents −2, 0, +2 and +4 % of the optimum moisture content and compacted with British standard light, West ...

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Compaction Delay Effects on Properties of Lime-Treated ...

The reductions in mavimum dry density (MDD) and optimum moisture content (OMC) associated with compaction delays are statistically significant at the 5% level, regardless of the compactive effort employed (i.e., standard Proctor or West African Standard).

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Influence of Compaction Delay on CBR and UCS of Cement ...

The Standard Proctor (SP) and West African Standard (WAS) compaction procedures were utilized during the tests. The SP compactions utilized 3 layers applying 27 blows each of a 2.5kg rammer falling from a height of 300mm using 1000cm3 mould. For the West African Standard, compactive effort which is the

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CiteSeerX — Engineering Properties of Lateritic Soils from

The tests carried out on the soil samples include the Atterberg limit tests, particle size distribution analysis, specific gravity, compaction test using the British Standard Light (BSL) Compactive effort, and California Bearing Ratio (CBR) test as specified by the West African

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CiteSeerX — Influence of Compactive Effort on Bagasse Ash ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The result of a laboratory study on the influence of British Standard Light (BSL), West African Standard (WAS) and British Standard Heavy (BSH) compactive effort on up to 8 % bagasse ash content with up to 4 % cement treated lateritic soil on compaction and shear strength characteristic of laterite.

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Sanni Waheed R.Engr., MNSE - Nigeria Professional ...

Lateritic soil samples were artificially contaminated with the simulated crude oil in the range 0% to 8% of the dry weight of soils in a step concentration of 2% and subjected to basic geotechnical laboratory tests using British Standard light (BSL) and West African Standard (WAS) compactive efforts.

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Influence of Compactive Efforts on Lime-Slag Treated ...

Feb 11, 2005  The results of a laboratory study on the influence of standard Proctor and West African Standard (WAS) compactive efforts on the compaction and strength characteristics of tropical black clay with a maximum of 8% lime and 10% slag (by dry weight of soil) is presented.

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procedure for west africa standard method of compaction ...

Jun 19, 2013  compactive efforts (reduced Proctor, standard Proctor, West African Standard and potential impact on flow rates and the desiccation process. . The compaction methods used included the reduced Proctor (RP) effort described by Daniel »More detailed

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(PDF) Soil-Water Characteristics Curves for Reddish Brown ...

West African Standard compactive effort which is the conventional energy level commonly used in the region (Ola, 1980; Osinubi, 1998) consist of energy level derived from a 4.5 kg rammer

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Influence of Compactive Effort on Bagasse Ash with Cement ...

The result of a laboratory study on the influence of British Standard Light (BSL), West African Standard (WAS) and British Standard Heavy (BSH) compactive effort on up to 8% bagasse ash content with up to 4% cement treated lateritic soil on compaction and shear strength characteristic of

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Slavery and Slave Trade in West Africa, 1450-1930

Slavery and Slave Trade in West Africa, 1450-1930 Patrick Manning . Slavery and slave trade, 1450-1650 . In 1450, a West African population of perhaps 20 to 25 persons million lived in relative stability. This population, while divided into numerous ethnic, linguistic, and political

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(PDF) STABILIZATION OF HIGHWAY EXPANSIVE SOILS WITH

The T MDD for West African Standard (WAS) co compactive effort increased increased with higher CKD content. content. The Optimum Moisture Content (OMC) for BSL and BSH compactive com efforts increased up to 6% CKD content th

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Design Parameters for Abandoned Dumpsite Soil as Liner ...

For the West African Standard compactive effort which is the conventional energy level commonly used in the region [14, 15] consist of energy level derived from a 4.5 kg rammer falling through 450 mm height onto five layers using 10 blows each. Design parameters.

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Salahudeen A Bunyamin Ahmadu Bello University, Nigeria ...

The MDD for West African Standard (WAS) compactive effort ‎increased with higher CKD content. The Optimum Moisture Content (OMC) for BSL and ‎BSH compactive efforts increased up to 6% CKD content then decreased with higher CKD ‎content. For the WAS compactive effort, the OMC generally decreased with higher CKD ‎content.

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CiteSeerX — Influence of Compactive Effort on Bagasse Ash ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The result of a laboratory study on the influence of British Standard Light (BSL), West African Standard (WAS) and British Standard Heavy (BSH) compactive effort on up to 8 % bagasse ash content with up to 4 % cement treated lateritic soil on compaction and shear strength characteristic of laterite.

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Engineering geological assessment of some lateritic soils ...

Table 1 modified AASHTO and West African levels of compactive shows the results of the engineering tests carried out on efforts, the banded gneiss-derived soils (with the highest AJST, Vol. 12, No. 1: October, 2012 62 Engineering Geological Assessment of some Lateritic Soils in Ibadan, South-Western Nigeria using Bivariate and Regression ...

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Influence of Compactive Efforts on Lime-Slag Treated ...

Influence of Compactive Efforts on Lime-Slag Treated Tropical Black Clay. The results of a laboratory study on the influence of standard Proctor and West African Standard (WAS) compactive efforts on the compaction and strength characteristics of tropical black clay with a maximum of 8% lime and 10% slag (by dry weight of soil) is presented.

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(PDF) Desiccation Induced Shrinkage of ... - Academia

A reddish brown lateritic soil treated with up to 15% blast furnace slag was compacted with three compactive efforts, (standard Proctor, West African Standard and modified Proctor) with moulding water contents ranging between 10 and 20% of weight of

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Compaction Delay Effects on Properties of Lime-Treated Soil

The reductions in mavimum dry density (MDD) and optimum moisture content (OMC) associated with compaction delays are statistically significant at the 5% level, regardless of the compactive effort employed (i.e., standard Proctor or West African Standard).

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Permeability of Lime-Treated Lateritic Soil Journal of ...

Sep 01, 1998  Laboratory investigations were carried out on a residual lateritic soil treated with quicklime (up to 8% by weight of dry soil) in order to evaluate the effect of lime content, curing period, and compactive effort on the permeability of lateritic soil-lime mixtures prepared at various maximum dry densities and corresponding optimum moisture contents.

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