Pdf effect of rice husk ash on soil stabilization aroj. Laboratory study on soil stabilization using fly ash and. Jan 27, 2016 experimental study of stabilization on natural soil subgrade using rice husk ash ijsrdvol. Further curing of samples has not shown much marginal improvement in strength.
Rice husk ash center for vocational building technology. Rice husk ash is a primary agricultural product obtained from paddy. Stabilization of residual soil with rice husk ash and. Feasibility of soil stabilization using rice husk ash and coir fibre written by abarajithan. Residual soil, stabilization, shear strength, rice husk ask, cbr. Soil stabilization using rice husk ash and natural lime as an. Feasibility of soil stabilization using rice husk ash and. The additive of rice husk could improve the dry strength of sand soil 7, 21. Review of industrial waste used in stabilization of expansive. California bearing ratio, fly ash, rice husk ash, soil stabilization. Soil sample is collected 1 meter below the original depth then collected into bag and send into the laboratory for examination. Influence of rice husk ash and lime on engineering. Shrinkage limit was improved in all admixture but highest 30 % improve in rha.
Stabilization of residual soil with rice husk ash and cement e. The soil was dried, and passed through an is sieve size of 425 m. Rice husk ash was applied at 4, 6, 8, and 10 % by weight of dry soil. Compressive strength testing of stabilized soil was investigated with various curing times of 3, 7, 14 and 28 d. Clay soil provides poor working platform due to its plasticity characteristics and thus leading to construction delays. The rha, scba and cda were mixed by partialreplacement of soil by weight in 0%, 2.
During milling of paddy about78% of weight is received as rice, broken rice and bran. These are prominent in countries where the rice production is abundant. The rice husk ash has good reactivity when used as a partial substitute for cement. Wf weight of the coir w weight of the airdried soil the different values adopted in the present study for the percentage of coir material are 0. Rice husk ash the rha was obtained by burning rice husk in the. Aug 24, 2010 therefore, sufficient laboratory soil tests, such as atterberg limits, compaction, california bearing ratio cbr, and direct shear test are carried out, and the results are analyzed. These materials may be classified as pozzolanic fly ash, rice husk ash etc. Due to 2% rice husk ash the cohesion value of soil increases from 0. Therefore, sufficient laboratory soil tests, such as atterberg limits, compaction, california bearing ratio cbr, and direct shear test are carried out, and the results are analyzed. Some strengthening approaches are available for stabilization of expansive soils. Comparative study on soil stabilization by sugar bagasse ash and rice husk ash 1. Rice husk contains about 75 % organic volatile matter and the balance 25 % becomes ash which is known as rice husk ash rha during the burning process agus, 2002,that is commonly dumped as waste materials. A major project on comparative study on soil stabilization by sugarbagasseash and rice husk ash submitted to rajiv gandhi technology university, bhopal m. Rice husk ash cvbt, center for vocational building.
The results generally indicate that adding lime and rice husk ash rha causes a decrease in dry density and an increase in optimum water content. Improvements include increasing the weight bearing capabilities and performance of insitu subsoil, sands, and other waste materials in order to strengthen road. This investigation is done to study the change in index properties and strength characteristics of black cotton soil corresponding to different proportions of fly ash and rice husk ash. The rice husk was burnt at temperatures between 500 and 700 c to ensure maximal formation of siliceous component. Pdf stabilization of residual soil with rice husk ash. Jha and gill 2006 studied the evaluation of using rice husk ash rha as a pozzolona for enhancing lime treatment of residual soil and concluded that with the addition of rice husk ash. Special attention is paid to its efficiency for increasing the strength by. If you continue browsing the site, you agree to the use of cookies on this website. Influence of rice husk ash and lime on engineering properties. When rice husk is burnt under controlled temperature, ash is produced and about 17%25% of rice husk s weight remains ash. Improvement of clayey soil characteristics using rice husk ash. Rice husk ash rha is obtained from the burning of rice husk. Soil stabilization using rice husk ash however, recent technology has increased the number of traditional additives used for soil stabilization purposes.
Stabilization of residual soil with rice husk ash and cement. So, the use and practical application of rice husk ash for concrete manufacturing are important. Stabilisation of rice husk ash for use as cushion below. Stabilization of tropical residual soil using rice husk ash. The potential and efficiency of using rice husk ash rha to add up or partially replace portland cement in deep cement mixing technique are examined.
The ash blended expansive soil with rice husk ash contents of 0, 5, 10, 15 and 20% on a dry weight basis and they inferred that increase in rice husk ash content reduces plasticity characteristics and the fsi was reduced about 50% by the addition of 20%. Under this category, soil stabilization depends mainly on chemical reactions between stabilizer cementitious material and soilminerals pozzolanic materials to achieve the desired effect. Comparative study on soil stabilization by sugar bagasse. Stabilization of alluvial soil for subgrade using rice.
Introduction a roadway section consists of a complete pavement system figure 01 including its associated base course, subbase course, subgrade, and required system drainage components. Test results show that both cement and rice husk ash reduce the plasticity of soils. In addition to that, rice husk is burnt as fuel at high combustion efficiency in brick kilns. A series of unconfined compression tests on cementrhastabilized clay are conducted to investigate the influence of rha on the mixture properties.
Recent research, based on pozzolanic activity, found that rice husk ash was a potential material for soil improvement muntohar 1997 and 1999. Rice husk ash is a pozzolanic material that could be potentially used in soil stabilization,though it is reasonably produced and freely available. Test results show that both cement and rice husk ash. Gandhia adepartment of civil engineering, sarvajanik college of engineering and technology, surat, gujarat, india accepted 20 october 20, available online 25 october 20, vol.
Remolded expansive clay was blended with rha and flyash. Addition of 1015% cement and 68% rice husk ash is recommended as an optimum amount. The husk is a byproduct of the rice milling industry. Soil stabilization has become a major issue in construction engineering and the researches regarding the effectiveness of using industrial wastes are rapidly increasing. Effectiveness of rice husk ash in stabilizing kenyan red. Muntohar b, a department of civil engineering, university of malaya, kuala lumpur 50603, malaysia b department of civil engineering, muhammadiyah university of yogyakarta, jl. Silica and calcium effect on geotechnical properties of. Potential use of rice husk ash in the stabilization and. Soil stabilization by rice husk ash and waste coir material. Due to 1% rice husk ash the angle of internal friction of soil increases from 22. A experimental study of black cotton soil, stabilized with. The objective of this paper is to upgrade expansive soil as a construction material using rha and flyash, which are waste materials. Investigation includes the evaluation of such properties of the soil as compaction, strength, and xray. Pdf effect of rice husk ash on lime stabilization of soil.
The rice husk ash is mixed with soil in various proportions like 5%. Its use as a soil stabilizer is an alternative to the final disposition with environmental benefit. Stabilisation of black cotton soil using admixtures pankaj r. Effect of cement replacement by rice husk ash on soft soil stabilization naphol yoobanpot and pitthaya jamsawang abstract the characteristics of soft soil improvement using cement and rice husk ash were studied. The swollen volume of expansive soil, expansive soil rice husk ash lime mixes are recorded as per is 2720 part 40 1985. Stabilization of alluvial soil for subgrade using rice husk. Efficiency of rice husk ash as cementitious material in. Pozzolanic materials such as rice husk ash rha with. Brooks soil stabilization with fly ash and rice husk ash international journal of research and reiew in appliedscience 2009,isnn209217 5d k soni, geotechnical engineering jounral effect of freezing thawing and wettingdrying on tensile strength of limefly ash stabilized black cotton soil. The rich land and tropical climate make for perfect conditions to cultivate rice and is taken advantage by these asian countries.
Due to 3% rice husk ash the cohesion value of soil increases from 0. These waste ashes are pozzolanic in nature and their utilization in soil stabilization. Rice husk ash in concrete properties, advantages and uses. The soil used in this study was obtained from davanagere, karnataka state, india. Thus, due to growing environmental concern and the need to conserve energy and resources, utilization of industrial wastes as supplementary cementing materials has become an integral part of concrete construction. Rice husk ash rha is the ash produced by burning of rice husk. May 09, 2015 rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic. The present experimental work briefly describes the suitability of the locally. A comparative study of stabilization on subgrade soil by. Index tests were used to characterize the treated soils.
Rice milling produces a byproduct known as husk which is surrounded by the paddy grain. Influence of using rice husk ash in soil stabilization. Rice husk ash rha is a pozz olanic material that co uld be potentially used in soil stabilization, though it is mo derately produced and readily a vailable. Experimental study of stabilization on natural soil subgrade. Introduction stabilization of soil plays a very important role during construction as it is a process used to improve the properties of soil such as strength, plasticity its. Rice husk ash cement introduction rice husk ash rha is a byproduct from the burning of rice husk. The contaminated soil was treated with up to 10% rice husk ash content. An assessment of the potential use of rice husk ash to immobilize and stabilize some ions in lateritic soil contaminated with tannery effluent was carried out. The construction of long lasting, economical flexible pavement. First index property of soil is determined after then fly ash and rice husk ash mix in different proportions in soil and put. This rha in turn contains around 85 % 90 % amorphous silica. Potential use of rice husk ash with lime as a soil.
Excessive settlement of foundations, uplift of structures, formation of cracks in the superstructure, failure of structural. It was collected by open excavation, from a depth of 1 m below natural ground level. Pdf soil stabilization using rice husk ash and cement. Stabilization of weak subgrade soil for road construction. One way to improve the mechanical properties of these soils is the use of soil stabilizers. Rice husk ash rha is a pozzolanic material that could be potentially used in soil stabilization, though it is moderately produced and readily available. Soil stabilization with rice husk ash rha rice husk is one of the main agricultural residues and waste byproduct of agricultural processing firms. Researches on stabilization by applying rha and lime combinations were conducted in sandy soils. Rice husk ash consist of 85%90% silica, this is why it is a great replacement for silica in soil stabilization, silica is considered to be a great binding agent along with cement, however due.
A series of laboratory experiments have been implemented. Rice husk ash rice milling generates a byproduct known as husk. Soil stabilization using rice husk ash, lime and jute. The effects of the engineering properties of clayey soils when blended with rice husk ash and lime is the focus of this paper. Some waste materials such fly ash, rice husk ash, pond ash may use to. Chemical analysis on the rice husk ash gave the sum of sio2, fe2o3, and al2o3 as 85.
The properly rice husk ashes are found to be active within the cement paste. Using british standard light bsl compaction energy level, performance of the soil rha was investigated with respect to compaction. About 108 tonnes of rice hsuk is produced in our world annually. Effect of cement replacement by rice husk ash on soft soil.
So for every kgs of paddy milled, about 220 kgs 22 % of husk is produced, and when this husk is burnt in the boilers, about 55 kgs 25 % of rha is. This paper concerned with the stabilization of subgrade soil using different types of locally available materials such as rice husk ash rha, sugarcane bagasse ash scba and cow dung ash cda. The silica is present in this rice husk in amorphous form and it is considered to be a pozzolanic. In the preparation of samples, if rice husk ash and coir are not used then, the airdried soil was mixed.
Nov 12, 2016 presentation about soil stabilization using fly ash and rice husk ash slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The rice husk ash is mixed with soil in various proportions like 5%, 10%, 20%, 30%, 40%, 50% and 80%. Experimental investigation on clay soil stabilization. Saw dust ash sda, coconut husk ash cha, millet husk ash mha, corn cob ash cca, rice husk ash rha, bagasse ash ba and locust bean ash lba. This study seeks to comparatively assess the effects of rice husk ash rha, powdered glass pg and cement on lateritic soil. Improvement to soils can be achieved through stabilization which involves blending and mixing materials with the soils to either achieve a desired gradation or to make them more stable. Addition of rice husk ash along with 3% lime shows steep increment in unconfined compressive strength for 20% ash for curing period of 14 days. Cokroaminoto 17, yogyakarta di 55253, indonesia received 29 january. Engineering properties of an expansive soil stabilized with. Soil sample collected from maikunkele area of minna, classified as an a76 lateritic soil on aashto classification was stabilized with 212% rice husk ash rha by weight of the dry soil.
Soil stabilization using rice husk ash chapter 1 introduction soil stabilization a general term for any physical, chemical, biological, or combined method of changing a natural soil to meet an engineering purpose. Because rha is not selfcementitious, a hydraulic binder such a lime must be added to form cements to improve the soil strength. To study soil stabilization of black cotton soil bc. The effect of rice husk on the chemical properties of clay. Rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic. An experimental investigation on stabilizing the soil using. Influence of using rice husk ash in soil stabilization method. Soil stabilization using rice husk ash and natural lime as. Chao lung hwang and satish chandra no of pages 51 pdf. The objective of this paper is to upgrade expansive soil as a construction material using rice husk ash rha and fly ash, which are waste materials. The soil frequently is fragile and has low stability in heavy loading. For tests of specimens of mixedstabilized soils, specimens were prepared by thoroughly mixing the required quantity of soil and stabilizers rice husk ash and fly ash in preselected proportion in dry state. P in partial fulfillment of the requirement for the award of degree of bachelor in engineering in civil.
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