Strength and mechanical behavior of soil–cement–lime–rice husk ash (soil–CLR) mixture

Bagheri, Younes; Ahmad, Fauziah; Ismail, Mohd Nazri

doi:10.1617/s11527-013-0044-2

Cited by 38 publications

(14 citation statements)

References 21 publications

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“…One value of moisture content and dry density was selected out of the three sets of values obtained and set as the dry density and moisture content for preparation of all UCS test samples. A similar procedure was also adopted by Wild et al [1] and Bagheri et al [61]. Basically, all samples had the same density and moisture content within the limits of experimental error.…”

Section: Methodsmentioning

confidence: 97%

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

James¹,

Pandian²

2018

Advances in Civil Engineering

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The study dealt with the effect of addition of sugarcane bagasse ash (BA) on the strength development of a lime stabilized expansive soil. Unlike previous investigations with combinations of lime and BA, this study compares the effect of lime contents determined by scientifically established procedures and the effect of BA on the stabilization of lime at different proportions with additional microstructural investigations. The minimum lime content required for stabilization known as initial consumption of lime (ICL) was determined using the Eades and Grim pH test as 5.5%. The optimum lime content (OLC) was determined using unconfined compression strength (UCS) tests as 7%. Another lime content less than ICL was randomly adopted as 3%. The three lime contents were mixed with 0.25%, 0.5%, 1%, and 2% BA. UCS samples of dimension 38 mm × 76 mm were prepared at a fixed dry density and moisture content and cured for periods of 2 hours (0 days), 3, 7, 14, and 28 days to study the development of strength and effect of BA. Mineralogical and microstructural analyses were performed on the pulverized UCS samples after failure. The results revealed that the addition of BA increased the immediate, early, and delayed strength of lime stabilized soil further, even when the lime content was lower than ICL. Addition of BA produced maximum immediate, early, and delayed strength gains of 58.3%, 20.7%, and 32.7%, respectively. Higher proportion of BA was required when lime content was above ICL, for maximum strength. Addition of BA resulted in better utilization of quartz in lime-soil reactions leading to formation of CSH and CAH minerals. A dense compact matrix was seen on analyzing the microstructure of the stabilized soil composite.

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Section: Methodsmentioning

confidence: 97%

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

James¹,

Pandian²

2018

Advances in Civil Engineering

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“…The effect observed in this case, is similar to what was reported by Rahman (1987) with increasing addition of RHA. Bagheri et al (2014) suggested that improvement in strength is due to the development of more cementation in the stabilized matrix. Chapman (1965) opined that the chemical reactions that occur (when RHA and CHA are mixed with shale) include pozzolanic reactions, cation exchange, carbonation and cementation.…”

Section: Effect Of Rha and Cha On Compaction Parametersmentioning

confidence: 99%

Strength characteristics of genetically different rice and coconut husk ash compacted shales

Oyediran

Fadamoro

2015

Geo-Engineering

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Background: The strength characteristics of two genetically different shales treated with both Rice Husk Ash (RHA) and Coconut Husk Ash (CHA) was evaluated to elucidate responses and effects, examine effectiveness of the additives with a view to ultimately provide economically viable and environmental friendly options for modification and hence stabilization. Methods: 2 to 20 % by weight of both RHA and CHA were separately added to Okitipupa (SW) and Enugu (SE) shales with the subsequent determination of Plasticity Index (PI), Maximum Dry Density (MDD), Optimum Moisture Content (OMC), Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR). Results: RHA and CHA were found to possess pozolanic properties such that their addition to shale in modest amounts (not more than 10 % by weight) has beneficial effect on the strength characteristics. Addition of RHA produced shales with reduced PI, higher UCS, increased MDD and more pronounced reduction in OMC when compared with the CHA stabilized shales. However in general, addition of 10 % RHA and 6-10 % CHA brought about optimal effect on the geotechnical properties of shales and as such can be regarded as the optimum content. Conclusions: These materials can thus serve as suitable alternatives to modify and stabilize problematic shale and hence help reduce construction costs, environmental hazards and ultimately bring about shales with improved geotechnical properties.

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“…RHA is generated due to the burning/incineration of rice husk generated in paddy farms as a waste material. RHA contains very high amounts of silica and can be used as a pozzolan in lime and cement mixtures [33]. Thus, utilization of RHA in combination with lime and cement is a foregone conclusion.…”

Section: Rice Husk Ash (Rha)mentioning

confidence: 99%

“…Bagheri et al [33] studied the strength and mechanical behavior of soil stabilized with cement, lime, and RHA. Consolidated undrained triaxial and UCC tests were performed to estimate the potential of mixtures of cement-lime and cement-lime-RHA.…”

Section: Rice Husk Ash (Rha)mentioning

confidence: 99%

Industrial Wastes as Auxiliary Additives to Cement/Lime Stabilization of Soils

James¹,

Pandian²

2016

Advances in Civil Engineering

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Chemical stabilization involves the use of chemical agents for initiating reactions within the soil for modification of its geotechnical properties. Cement and lime stabilization have been the most common stabilization methods adopted for soil treatment. Cement stabilization results in good compressive strengths and is preferred for cohesionless to moderately cohesive soil but loses effectiveness when the soil is highly plastic. Lime stabilization is the most preferred method for plastic clays; however, it proves to be ineffective in sulphate rich clays and performs poorly under extreme conditions. With such drawbacks, lots of researches have been undertaken to address the issues faced with each stabilization method, in particular, the use of solid wastes for soil stabilization. Solid waste reuse has gained high momentum for achieving sustainable waste management in recent times. Research has shown that the use of solid wastes as additives with and replacement for conventional stabilizers has resulted in better results than the performance of either individually. This review provides insight into some of the works done by earlier researchers on lime/cement stabilization with industrial wastes as additives and helps to form a sound platform for further research on industrial wastes as additives to conventional stabilizers.

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Strength and mechanical behavior of soil–cement–lime–rice husk ash (soil–CLR) mixture

Cited by 38 publications

References 21 publications

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

Bagasse Ash as an Auxiliary Additive to Lime Stabilization of an Expansive Soil: Strength and Microstructural Investigation

Strength characteristics of genetically different rice and coconut husk ash compacted shales

Industrial Wastes as Auxiliary Additives to Cement/Lime Stabilization of Soils

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