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.

western Africa | Countries, History, Map, Population ...

The region may be divided into several broad physiographic regions. The northern portion of western Africa is composed of a broad band of semiarid terrain, called the western Sudan, stretching from the Atlantic Ocean on the west to the area of Lake Chad on the east, a distance of about 2,500 miles (4,000 km). It is largely a plateau of modest elevation and borders the Sahara (desert) on the ...

1 INTRODUCTION IJSER

using the West African Standard (WAS) energy levels. If the BS (Proctor) compaction mould is used, the compactive effort for the WAS consists of the energy derived from a 4.5kg rammer falling through 45cm onto five layers, each receiving 10 blows. When the CBR mould is used, the WAS compactive effort is

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 laterite.

West Africa Squadron - Wikipedia

The Royal Navy established the West Africa Squadron at substantial expense in 1808 after Parliament passed the Slave Trade Act of 1807, an Act for the Abolition of the Slave Trade. The squadron's task was to suppress the Atlantic slave trade by patrolling the coast of West Africa. With a home base at Portsmouth, it began with two small ships, the 32-gun fifth-rate frigate HMS Solebay and the ...

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.

The Influence of Compactive Effort on the Desiccation ...

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 1000 cm3 mould. The soil was compacted in five layers, each layer receiving 10 blows. Finally, British standard . Jordan Journal of Civil Engineering, Volume 9, No. 4, 2015

Compacted Foundry Sand Treated with Cement Kiln Dust as ...

Vol. 16 [2011], Bund. C 340 receiving 27 uniformly distributed blows; (BS 1990) The West African standard compactive effort (WAS), carried out using energies derived from a rammer of 4.5 kg mass ...

SJIF Impact Factor: 5

Table 2: Compactive efforts details used in the study. Standard Hammer weight(kg) Layers of soil No of bows Compactive effort (kN-m/m3) Standard Proctor 2.5 3 25 592 Modified AASHTO 4.5 5 56 2,710 West African Standard 4.5 5 25 1123.6 British Heavy 4.5 5 62 2736

Effects of Steel Mill Scale on the strength ...

the compactive effort for the WAS consists of the energy derived from a 4.5kg rammer falling through 45cm onto five layers, each receiving 10 blows. When the CBR mould is used, the WAS compactive effort is also derived from a 4.5kg receiving 25 blows (Osinubi 1998a, b). WAS compaction is commonly used in West Africa region.

West Africa - Wikipedia

West Africa or Western Africa is the westernmost region of Africa.The United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone and Togo, as well as the United Kingdom Overseas Territory of Saint Helena, Ascension and Tristan da Cunha.

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).

Hershey, Nestle and Mars broke their ... - Washington Post

About two-thirds of the world's cocoa supply comes from West Africa where, according to a 2015 U.S. Labor Department report, more than 2 million children were engaged in dangerous labor in cocoa ...

Proctor compaction test - Wikipedia

The Proctor compaction test is a laboratory method of experimentally determining the optimal moisture content at which a given soil type will become most dense and achieve its maximum dry density.The test is named in honor of Ralph Roscoe Proctor [], who in 1933 showed that the dry density of a soil for a given compactive effort depends on the amount of water the soil contains during soil ...

AFRICOM Adds Logistics Hub in West Africa, Hinting at an ...

The U.S. military's activities in West Africa, long a matter of somewhat shadowy speculation, exploded into the public consciousness in 2017 when four U.S. soldiers were killed in an ambush ...

Influence of Compactive Efforts and Compaction Delays on ...

The results of a laboratory study on the influence of standard Proctor and West African standard compactive efforts as well as compaction delays up to 3 h on the compaction and strength characteristics of lateritic soil treated with a maximum of 8% lime (by dry weight of soil) is presented.

Influence of Compactive Effort on Bagasse Ash with ... - CORE

Abstract. 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.

The West Africa Squadron: Imperial Britain's Effort To End ...

Mar 18, 2019· The West Africa Squadron may not have been able to eliminate the slave trade on its own, but its very existence was a deterrent to continuing the practice. As the abolitionists had originally hoped, the elimination of the trade was eventually followed by …

Effect of the Slave Trade on West Africa | SchoolWorkHelper

Socially, the biggest impact the Trans-Atlantic slave trade had on West Africa was a decrease in their population. Statistics, gathered from Western Civilization: A Brief History (pg145), state that the Trans-Atlantic slave trade was responsible for the forced migration of between 12-15 million people from Africa. About two-thirds of the people sold to European trades were men, the majority of ...

Soil Compaction:Ground Improvement Method Before House ...

The concept of compactive effort is used in both field and laboratory compactions. For laboratory conditions, compactive effort is defined as the application of a given amount of energy per unit volume of compacted soil. For field conditions, compactive effort is defined as the compaction obtained by using various equipments.

IDF chief warns of possible outbreak of West Bank violence ...

Jun 23, 2020· IDF chief warns of possible outbreak of West Bank violence over annexation Aviv Kohavi says fighting could also spread to the Gaza Strip as a result of the 'upcoming events' By TOI staff 23 ...

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.

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

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.

Effect of Compactive Effort on Compaction Characteristics ...

compactive effort on the compaction characteristics of laterite soil treated with 2, 4, 6, 8 and 10% terrasil by dry weight of the soil and compacted using the energies of the British standard light (BSL), West African Standard (WAS) and British standard heavy (BSH) …

The West African Standard Compaction Test - Structville

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.

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

Nov 14, 2015· One-dimensional laboratory consolidation test was carried out on compacted tropical black clay (also known as black cotton soil because the cotton plant thrives well on it) treated with up to 16 % rice husk ash (RHA) to assess the effect of compactive effort and curing period on the consolidation characteristics of the treated soil. Specimens were compacted using three different …

CiteSeerX — Soil-Water Characteristics Curves for

Abstract. Soil-water characteristics curves (SWCCs) are presented for three compacted reddish brown tropical soils that were prepared at different compaction water contents (dry, wet and optimum water content) and compactive efforts (reduced Proctor, standard Proctor, West African Standard and modified Proctor).

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 Standard (WAS).