The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Agus Setyo Muntohar - One of the best experts on this subject based on the ideXlab platform.
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Effect of the cement-Rice Husk Ash on the plasticity and compaction of soil
2020Co-Authors: E A Basha, Roslan Hashim, Agus Setyo MuntoharAbstract:The chemical stabilisation of soils was studied by using cement and Rice Husk Ash. Three types of soils, residual soils, kaolinite and bentonite, were used in the study. The experimental study included the evaluation of the main index properties of the soil and compaction, along with a characterisation of the materials through X-Ray diffraction. Test results show that both cement and Rice Husk Ash reduces the plasticity of soils. In term of compactability, addition of Rice Husk Ash and cement decreases the maximum dry density and increases the optimum moisture content. From the viewpoint of plasticity, compaction characteristics, and economy, addition of 6 - 8 percent cement and 10 - 15 percent Rice Husk Ash are recommended as an optimum amount.
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stabilization of residual soil with Rice Husk Ash and cement
Construction and Building Materials, 2005Co-Authors: E A Basha, Roslan Hashim, Hilmi Bin Mahmud, Agus Setyo MuntoharAbstract:Abstract Stabilization of residual soils is studied by chemically using cement and Rice Husk Ash. Investigation includes the evaluation of such properties of the soil as compaction, strength, and X-ray diffraction. Test results show that both cement and Rice Husk Ash reduce the plasticity of soils. In term of compactability, addition of Rice Husk Ash and cement decreases the maximum dry density and increases the optimum moisture content. From the viewpoint of plasticity, compaction and strength characteristics, and economy, addition of 6–8% cement and 10–15% Rice Husk Ash is recommended as an optimum amount.
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STABILIZATION OF CLAY AND RESIDUAL SOILS USING CEMENT - Rice Husk Ash MIXTURES
2004Co-Authors: E A Basha, Roslan Hashim, Agus Setyo MuntoharAbstract:The well established techniques of soil stabilization often use such cementing agents as Portland cement, lime, etc. Replacement of those cementing materials with industrial or agricultural by-product is highly desirable. Rice Husk Ash is a very potential paddy crop waste as pozzolanic materials which result in a superior properties when combined with cement or other cementing agents. This paper presents the laboratory study on the stabilized soils with cement and Rice Husk Ash. The experimental study included the evaluation of such properties of the soil as consistency limits, compaction, unconfined compressive strength, and X-Ray diffraction. Three types of soils are used in this study i.e granite residual soils, kaolinite clay and montmorillonite clay (bentonite). Test results show that both cement and Rice Husk Ash reduces the plasticity of soils. In term of compactability, addition of Rice Husk Ash and cement decreases the maximum dry density and increases the optimum moisture content. From the viewpoint of plasticity, compaction and strength characteristics, and economy, addition of 6 – 8 percent cement and 10 – 15 percent Rice Husk Ash are recommended as an optimum amount for soils stabilization.
Shuichi Sugita - One of the best experts on this subject based on the ideXlab platform.
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adsorption of lead and mercury by Rice Husk Ash
Journal of Colloid and Interface Science, 2004Co-Authors: Qingge Feng, Fuzhong Gong, Shuichi Sugita, Masami ShoyaAbstract:An attempt at the use of Rice Husk Ash, an agricultural waste, as an adsorbent for the adsorption of lead and mercury from aqueous water is studied. Studies are carried out as a function of contact times, ionic strength, particle size, and pH. Rice Husk Ash is found to be a suitable adsorbent for the adsorption of lead and mercury ions. The Bangham equation can be used to express the mechanism for adsorption of lead and mercury ions by Rice Husk Ash. Its adsorption capability and adsorption rate are considerably higher and faster for lead ions than for mercury ions. The finer the Rice Husk Ash particles used, the higher the pH of the solution and the lower the concentration of the supporting electrolyte, potassium nitrate solution, the more lead and mercury ions absorbed on Rice Husk Ash. Equilibrium data obtained have been found to fit both the Langmuir and Freundlich adsorption isotherms.
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study on the pozzolanic properties of Rice Husk Ash by hydrochloric acid pretreatment
Cement and Concrete Research, 2004Co-Authors: Qingge Feng, Masami Shoya, Hirohito Yamamichi, Shuichi SugitaAbstract:The pozzolanic properties of Rice Husk Ash by hydrochloric acid pretreatment are reported in the paper. Three methods have been used to estimate the pozzolanic activity of Rice Husk Ash. The heat evolution and the hydration heat of cement, the Ca(OH)2 content in the mortar and the pore size distribution of mortar are determined. It is shown that compare with the Rice Husk Ash heated untreated Rice Husk, the sensitivity of pozzolanic activity of the Rice Husk Ash heated hydrochloric acid pretreatment Rice Husk to burning conditions is reduced. The pozzolanic activity of Rice Husk Ash by pretreatment is not only stabilized but also enhanced obviously. The kinetics of reaction of Rice Husk Ash with lime is consistent with diffusion control and can be represented by the Jander diffusion equation. A significant increase in the strength of the Rice Husk Ash (pretreated) specimen is observed. The results of heat evolution indicate that the Rice Husk Ash by pretreatment shows the behavior in the increase of hydration of cement. The cement mortar added with the Rice Husk Ash by pretreatment has lower Ca(OH)2 content after 7 days and the pore size distribution of the mortar with the Rice Husk Ash with pretreatment shows a tendency to shift towards the smaller pore size.
E A Basha - One of the best experts on this subject based on the ideXlab platform.
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Effect of the cement-Rice Husk Ash on the plasticity and compaction of soil
2020Co-Authors: E A Basha, Roslan Hashim, Agus Setyo MuntoharAbstract:The chemical stabilisation of soils was studied by using cement and Rice Husk Ash. Three types of soils, residual soils, kaolinite and bentonite, were used in the study. The experimental study included the evaluation of the main index properties of the soil and compaction, along with a characterisation of the materials through X-Ray diffraction. Test results show that both cement and Rice Husk Ash reduces the plasticity of soils. In term of compactability, addition of Rice Husk Ash and cement decreases the maximum dry density and increases the optimum moisture content. From the viewpoint of plasticity, compaction characteristics, and economy, addition of 6 - 8 percent cement and 10 - 15 percent Rice Husk Ash are recommended as an optimum amount.
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stabilization of residual soil with Rice Husk Ash and cement
Construction and Building Materials, 2005Co-Authors: E A Basha, Roslan Hashim, Hilmi Bin Mahmud, Agus Setyo MuntoharAbstract:Abstract Stabilization of residual soils is studied by chemically using cement and Rice Husk Ash. Investigation includes the evaluation of such properties of the soil as compaction, strength, and X-ray diffraction. Test results show that both cement and Rice Husk Ash reduce the plasticity of soils. In term of compactability, addition of Rice Husk Ash and cement decreases the maximum dry density and increases the optimum moisture content. From the viewpoint of plasticity, compaction and strength characteristics, and economy, addition of 6–8% cement and 10–15% Rice Husk Ash is recommended as an optimum amount.
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STABILIZATION OF CLAY AND RESIDUAL SOILS USING CEMENT - Rice Husk Ash MIXTURES
2004Co-Authors: E A Basha, Roslan Hashim, Agus Setyo MuntoharAbstract:The well established techniques of soil stabilization often use such cementing agents as Portland cement, lime, etc. Replacement of those cementing materials with industrial or agricultural by-product is highly desirable. Rice Husk Ash is a very potential paddy crop waste as pozzolanic materials which result in a superior properties when combined with cement or other cementing agents. This paper presents the laboratory study on the stabilized soils with cement and Rice Husk Ash. The experimental study included the evaluation of such properties of the soil as consistency limits, compaction, unconfined compressive strength, and X-Ray diffraction. Three types of soils are used in this study i.e granite residual soils, kaolinite clay and montmorillonite clay (bentonite). Test results show that both cement and Rice Husk Ash reduces the plasticity of soils. In term of compactability, addition of Rice Husk Ash and cement decreases the maximum dry density and increases the optimum moisture content. From the viewpoint of plasticity, compaction and strength characteristics, and economy, addition of 6 – 8 percent cement and 10 – 15 percent Rice Husk Ash are recommended as an optimum amount for soils stabilization.
Qingge Feng - One of the best experts on this subject based on the ideXlab platform.
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adsorption of lead and mercury by Rice Husk Ash
Journal of Colloid and Interface Science, 2004Co-Authors: Qingge Feng, Fuzhong Gong, Shuichi Sugita, Masami ShoyaAbstract:An attempt at the use of Rice Husk Ash, an agricultural waste, as an adsorbent for the adsorption of lead and mercury from aqueous water is studied. Studies are carried out as a function of contact times, ionic strength, particle size, and pH. Rice Husk Ash is found to be a suitable adsorbent for the adsorption of lead and mercury ions. The Bangham equation can be used to express the mechanism for adsorption of lead and mercury ions by Rice Husk Ash. Its adsorption capability and adsorption rate are considerably higher and faster for lead ions than for mercury ions. The finer the Rice Husk Ash particles used, the higher the pH of the solution and the lower the concentration of the supporting electrolyte, potassium nitrate solution, the more lead and mercury ions absorbed on Rice Husk Ash. Equilibrium data obtained have been found to fit both the Langmuir and Freundlich adsorption isotherms.
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study on the pozzolanic properties of Rice Husk Ash by hydrochloric acid pretreatment
Cement and Concrete Research, 2004Co-Authors: Qingge Feng, Masami Shoya, Hirohito Yamamichi, Shuichi SugitaAbstract:The pozzolanic properties of Rice Husk Ash by hydrochloric acid pretreatment are reported in the paper. Three methods have been used to estimate the pozzolanic activity of Rice Husk Ash. The heat evolution and the hydration heat of cement, the Ca(OH)2 content in the mortar and the pore size distribution of mortar are determined. It is shown that compare with the Rice Husk Ash heated untreated Rice Husk, the sensitivity of pozzolanic activity of the Rice Husk Ash heated hydrochloric acid pretreatment Rice Husk to burning conditions is reduced. The pozzolanic activity of Rice Husk Ash by pretreatment is not only stabilized but also enhanced obviously. The kinetics of reaction of Rice Husk Ash with lime is consistent with diffusion control and can be represented by the Jander diffusion equation. A significant increase in the strength of the Rice Husk Ash (pretreated) specimen is observed. The results of heat evolution indicate that the Rice Husk Ash by pretreatment shows the behavior in the increase of hydration of cement. The cement mortar added with the Rice Husk Ash by pretreatment has lower Ca(OH)2 content after 7 days and the pore size distribution of the mortar with the Rice Husk Ash with pretreatment shows a tendency to shift towards the smaller pore size.
Velu Saraswathy - One of the best experts on this subject based on the ideXlab platform.
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Microstructure Characteristics of Fly Ash Concrete with Rice Husk Ash and Lime Stone Powder
International Journal of Concrete Structures and Materials, 2018Co-Authors: Sang Hwa Jung, Velu Saraswathy, Palanivel Kathirvel, Subbiah Karthick, Seung-jun KwonAbstract:Industrial wastes and recycled materials are being utilized in the construction industry for preserving the environment, saving of materials, and enhancing durability of the construction material. Blending of cement with supplementary cementitious materials like fly Ash, Rice Husk Ash, and silica fume makes concrete more durable. The main objective of this study is to make use of the Rice Husk Ash and lime powder (LP) as a replacement of Portland pozzolana cement considering various replacement levels. The engineering and durability performance in concrete with LP were performed through compressive strength and void measurement. The microstructure in the concrete with LP was characterized through XRD, SEM/EDS, and TG/DTA. Optimum replacement ratio for Rice Husk Ash and LP were obtained through pozzolanic reaction based CSH formation.
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corrosion performance of Rice Husk Ash blended concrete
Construction and Building Materials, 2007Co-Authors: Velu Saraswathy, Hawon SongAbstract:Abstract Rice Husk Ash is one of the promising pozzolanic materials that can be blended with Portland cement for the production of durable concrete and at the same time it is a value added product. Addition of Rice Husk Ash to Portland cement not only improves the early strength of concrete, but also forms a calcium silicate hydrate (CSH) gel around the cement particles which is highly dense and less porous. This may increase the strength of concrete against cracking. So far a systematic and detailed investigations on the corrosion performance of Rice Husk Ash blended concrete is very scarce. Therefore, in the present investigation, a realistic approach has been made using different techniques such as compressive strength, bond strength, split tensile strength etc. Corrosion performance was evaluated using, open circuit potential measurements, rapid chloride ion permeation test and impressed voltage test and the results were discussed.
