Performance of compacted cement-stabilised soil

Bahar, Ramdane; Benazzoug, Mouloud; Kenaï, Saïd

doi:10.1016/j.cemconcomp.2004.01.003

Cited by 348 publications

(193 citation statements)

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“…This suggests that the inclusion of the liquid chemical in the compressed earth blocks significantly improved the water absorption property of the blocks. This is in agreement with previous studies [11,[27][28] with cement which also recorded decrease water absorption of earth blocks stabilised with cement. …”

Section: Absorption Coefficient Of Compressed Earth Blocksupporting

confidence: 94%

“…It can also be observed that the higher liquid chemical content (1.5%) achieved the higher strength as was also observed in the compressive strength test result in Figure 3. Studies by Bahar et al [27], Millogo & Morel [29] and Medjo Eko et al [30] with cement as stabiliser in soil blocks recorded similar trend. The recorded p-values of 0.088 and 0.123 for 1 -1.5% and 0.5 -1% respectively for chemical inclusion shows that there was no significant difference, but the p-value of 0.026 recorded for 0.5 -1.5 indicates a statistical significant difference at 28-day curing age.…”

Section: Splitting Tensile Strength Of Compressed Earth Blockmentioning

confidence: 53%

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Experimental Investigation on the Properties of Compressed Earth Blocks Stabilised with a Liquid Chemical

Danso¹

2017

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Soil blocks are usually stabilised with cementing materials, fibres or chemicals to improve their performance properties for construction purpose. This study investigates the properties of compressed earth blocks stabilised with a liquid chemical (Pidiproof LW+). Experiment was conducted using 0.5, 1 and 1.5% weight contents of Pidiproof LW+ to produce compressed earth blocks and cured at 7, 14, 21 and 28 days. The blocks were tested for density, absorption coefficient, compressive strength and splitting tensile strength. It was found that with the exception of density test, the chemical inclusion in the other tests significantly improved the performance properties of the compressed earth blocks. Furthermore, the higher chemical content (1.5%) inclusion in the compressed earth block provided better performance properties. The paper concludes that the inclusion of the liquid chemical in the compressed earth blocks generally improved the performance properties of the blocks. Recommendation is made to the use of other chemicals for applicability in earthen construction.

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Section: Absorption Coefficient Of Compressed Earth Blocksupporting

confidence: 94%

Section: Splitting Tensile Strength Of Compressed Earth Blockmentioning

confidence: 53%

Experimental Investigation on the Properties of Compressed Earth Blocks Stabilised with a Liquid Chemical

Danso¹

2017

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“…In as much as clay is very important in soil materials for brick making, especially because of its cohesive properties that serves as binder for the soil, extreme care must be taken to avoid too high clay content because of possible volume change under variable moisture conditions. In the same vein, curing had been found to improve the compressive strength of CEBs with a maximum improvement in compressive strength of the cement stabilized soil achieved after curing for about 28 days (Bahar et al, 2004) ( Figure 5). …”

Section: Strength Of Cebsmentioning

confidence: 78%

“…Some of these fibre materials include rice husk ash (RHA), peat, marl, coal ash, cassava peels and a host of others. Many researchers have studied the response and effect of the addition of these materials in improving the strength characteristics and durability of compressed earth bricks (Ola, 1989;Moore, 1987in AttohOkine, 1995Osula, 1996;Bell, 1996;Bahar et al, 2004;Venkatarama Reddy and Gupta, 2008;Billong et al, 2009;Al-Amoudi et al, 2010;Villamizar et al, 2012;Al-Jabri and Shoukry, 2014;and Cong et al, 2014). Their findings generally indicate a positive improvement in strength properties and durability of CEBs, which depend largely on the method and type of stabilization.…”

Section: Stabilization Of Ceb's and Stabilizersmentioning

confidence: 99%

“…Trials on stabilization of soil using cement dates back to 1917 and, since then, it has gained a wide acceptance and usage in different engineering applications all over the world. Recently, various authors reported on the use of cement in construction works with earth materials and the improvement of engineering properties of these soils as well as lower water absorption (Walker, 1995;Bahar et al, 2004;Horpibulsuk et al, 2010;Goodary et al, 2012;Cong et al, 2014;and Khemissa and Mahamedi, 2014).…”

Section: Cement + H 2 O Csh + Ca(oh) 2 Equationmentioning

confidence: 99%

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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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