Geotechnical, mechanical, chemical and mineralogical characterization of a lateritic gravels of Sapouy (Burkina Faso) used in road construction

Millogo, Younoussa; Traoré, Karfa; Ouedraogo, Richard; Kaboré, Kalsibiri; Blanchart, Philippe; Thomassin, Jean Hugues

doi:10.1016/j.conbuildmat.2006.07.014

Cited by 63 publications

(43 citation statements)

References 15 publications

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“…Generally, they are of good to fair quality as raw materials used both in building and road constructions. However, as observed by Millogo et al (2008) and references therein, lateritic soils chosen based only from the results of geotechnical tests behaved badly on the pavements after a short period. This behavior could be attributed to the insufficiency of the geotechnical tests justifying the choice of lateritic soils destined to the road construction.…”

Section: Introductionmentioning

confidence: 98%

“…According to Day (2000) lateritic soils consisting mainly of un-swelling clay such as kaolinite are generally located below the A-line. Satisfactory classification of expansive soils implies that the geotechnical parameters that characterize swelling are known (Millogo et al 2008). The swelling rate (ε s ) which is defined as the percentage of swelling of a clay sample compacted at optimum Proctor and subjected to a load of 7 kPa was computed using the following equation (2) (Derriche and Kebaili 1998):…”

Section: Grain Size Distribution and Atterberg's Limitsmentioning

confidence: 99%

“…To backup this short coming, some authors (eg. Tockol 1994;Mahalinger-Iyer and Williams 1997;Millogo et al 2008) suggest that chemical and mineralogical analysis must be conducted on lateritic soils in addition to the geotechnical classic tests. Accordingly, the purpose of this work is to combine geotechnical tests to chemical and mineralogical analysis to characterize micashist derived lateritic soils from Mfou, Central-Cameroon.…”

Section: Introductionmentioning

confidence: 99%

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Geotechnical, chemical and mineralogical evaluation of lateritic soils in humid tropical area (Mfou, Central-Cameroon): Implications for road construction

et al. 2015

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Increased cost associated with the used of high quality materials have led to the need for local soils to be used in civil engineering works. In this paper, geo-chemical approaches coupled with conventional geotechnical techniques has been used to investigate vertical and lateral peculiar engineering index properties (EIP) of micaschist derived soils from Mfou, Central-Cameroon for their uses in road construction. The X-ray diffraction (XRD) analysis conducted on the soils indicated the absence of swelling clays. The main mineral phases were quartz, kaolinite, goethite, magnetite and chlorite. Geo-chemical results show that the investigated soils are "true laterites" made up of 41 wt.% of Fe 2 O 3 , 35 wt.% of SiO 2 , 21 wt.% of Al 2 O 3 , 1.17 wt.% of K 2 O and 0.05 wt.% of CaO. The results of geotechnical tests suggest that the upper clayey layer (UCL) and bottom mottled clayey layer (MCL) of the weathering profiles are poorly graded soils with EIP (fines particles (FP) of 61 and 63%, plasticity index (PI) of 30 and 31%, Californian Bearing Ratio (CBR) at 95% of 21 and 19%), which do not allow their use as raw materials in road construction whereas, intermediate nodular layer (INL) are well graded soils having EIP (FP of 26%, PI of 26% and CBR of 39%) that meet the specification required for sub-base materials for light traffic roads. The relatively high sesquioxyde present in these residual soils may act as cementing agent, thereby making the compacted soils relatively brittle. The direct shear test results show that the soils have high bearing capacity (cohesion of 62 Kpa and 27.2°angle of internal friction) making them to be useful in slope stability and shallow foundation design. The comparison of the studied soils with some lateritic soils in Sub-Saharan Africa indicates that i) genesis and climatic conditions are potentials factors that influence EIP of lateritic soils, ii) lateritic soils developed under semi-arid conditions exhibits EIP better than those developed under tropicaland sub-tropical conditions.

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Section: Introductionmentioning

confidence: 98%

Section: Grain Size Distribution and Atterberg's Limitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geotechnical, chemical and mineralogical evaluation of lateritic soils in humid tropical area (Mfou, Central-Cameroon): Implications for road construction

et al. 2015

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“…(González de Vallejo and Ferrer, 2011). Millogo et al, (2008) listed the following geotechnical properties of laterites in Burkina Faso: maximum dry density (MDD) of 21.7 kN/m 3 at an optimum moisture content (OMC) of 6.6% with 43% CBR at 95% of MDD. They went further to describe the stress-strain curves of the soils, which show a ductile type of rupture mechanism with a well-defined plastic phase.…”

Section: Shear Strength Of Lateritic Soilsmentioning

confidence: 99%

A review of the use of lateritic soils in the construction/development of sustainable housing in Africa: A geological perspective

Oyelami

Rooy

2016

Journal of African Earth Sciences

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Highlights• Appraisal of the previous work in the use of tropical soils in low cost, energy efficient housing development.• It established CEBs as sustainable building materials for a sustainable environment.• Identification of lateritic soils as suitable material in the production of CEBs.• Established the importance of parent rock material (its type and mineralogy) in strength and durability of CEBs.• Discouraging the common practice of firing clay bricks for the sake of sustainable environment. AbstractLateritic soils have been described as highly weathered tropical or sub-tropical residual soils with varying proportions of particle sizes ranging from clay size to gravel, usually coated with sesquioxide rich concretions. It is sometimes referred to as brick earth based on its use. The use of laterite and lateritic soils have been found to promote the realization of decent housing and bridging the housing deficit, especially in Africa.The author has attempted to review available information on the recent trends in building bricks and housing development with the aim of identifying a suitable soil material that will meet the present challenge of sustaining the environment without costing too much and maintaining a high standard of strength, durability and aesthetics. A critical review of laterite and lateritic soils from a geological point of view indicated these soils to be one of the best natural materials used in the production of compressed earth bricks. Lateritic soils are mostly well graded, comprising both cohesive (silt and clay) and cohesionless (sands and gravels) soil fraction, it contains sesquioxides and clay minerals which are very useful in the natural binding process as well as in the presence of most chemical binders.Compressed earth bricks are mainly composed of raw earth materials (soil) with their cohesion due principally to the clay fraction present in both humid and dry states. CEB's promote building in a 'sustainable' way and offers a good prospect to using our resources in an efficient manner while creating dwellings that improve human health, well-being and preserving a better environment, with an affordable and natural alternative.

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“…These results are typical of soils derived from rocks that are mostly felsic in origin and the soils from both sample areas reflect the mineralogical and textural characteristics of the parent rock. (Adeyemi andOyeyemi, 2000 andMillogo et al, 2008). Building standards and published sources agree on the need for a minimum clay content in soil material used as construction material (Centre for Development of Industry CDI; African Regional Organization for Standardization (ARSO, 1998), The United States Office of Internal Affairs handbook for building homes of earth, (Wolfskill et al, 1970), The Australian Earth Building Handbook, (Standards Australia and Walker, HB 195, 2002); Houben and Guillaud, (1994); Delgado and Guerrero, 2007).…”

Section: Sc-clayey Sand Sm-silty Sandmentioning

confidence: 99%

Geotechnical characterisation of lateritic soils from south-western Nigeria as materials for cost-effective and energy-efficient building bricks

Oyelami

Rooy

2016

Environ Earth Sci

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Lateritic soils which have been described as highly weathered tropical or sub-tropical residual soils, were studied with an attempt to establish its suitability or otherwise as sustainable material in building bricks and housing development that will meet the present challenge of sustaining the environment without costing too much and maintaining a high standard of strength, durability and aesthetics. Index properties of the tested lateritic soils revealed them as mostly well-graded, comprising both cohesive (silt and clay) and cohesionless (sand and gravel) soil fraction. The geotechnical analyses on the studied lateritic soil revealed a strong compressive strength with a relatively sound dry density which could guarantee a good durability in resulting bricks made from these soil materials.Further test on the strength and durability of the compressed earth bricks (CEBs) made from these lateritic soils revealed a brick with compressive strength ranging between 6.33 and 15.57 MPa which are considered to be good strength coupled with its sound durability strength established over a period more than one year under a complete cycle of weather and seasonal conditions.In conclusion, lateritic soils from the study area were found to be suitable as materials for bricks (CEB) with good compressive and durability strength which qualifies them sustainable and cost effective materials for lowcost housing development.

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Geotechnical, mechanical, chemical and mineralogical characterization of a lateritic gravels of Sapouy (Burkina Faso) used in road construction

Cited by 63 publications

References 15 publications

Geotechnical, chemical and mineralogical evaluation of lateritic soils in humid tropical area (Mfou, Central-Cameroon): Implications for road construction

Geotechnical, chemical and mineralogical evaluation of lateritic soils in humid tropical area (Mfou, Central-Cameroon): Implications for road construction

A review of the use of lateritic soils in the construction/development of sustainable housing in Africa: A geological perspective

Geotechnical characterisation of lateritic soils from south-western Nigeria as materials for cost-effective and energy-efficient building bricks

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