Effect of rice husk ash on workability and strength of. In this investigation, a feasibility study is made to use rice husk. Rice husk ash has also been reported to improve the properties of concrete or cement paste due to the pozzolanic reaction and its role. Considerable efforts are being taken worldwide to utilise natural waste and bye product as supplementary cementing materials to improve the properties of cement concrete. May 09, 2015 percentage replacement of cement by rice husk ash fineness of rice husk ash chemical composition of rice husk ash water to cement material ratio wc ratio type of curing also from the literature survey, it is observed that the parameters suggested by different researchers and their results are not matching with each other. Efficiency of rice husk ash as cementitious material in. Introduction concrete as is well known is a heterogeneous mix of cement, water and aggregates. Rice husk ash cvbt, center for vocational building. Effect of rice husk ash on fresh and hardened properties.
The concrete is mixed with rha in varying percentage of 1030%, with constant 5% of marble powder. In the final note, the use of byproducts like rice husk ash in the concrete improves the quality of concrete and reduces pollution as well as the cost of construction. Malleswara rao 2 1 department, civil engineering, gitam university, 2 department of civil engineering, andhra university. Effect of rice husk ash on workability and strength of concrete abstract rice husk ash rha is an agricultural waste which is a pozzolanic material that can be blended with the cement for manufacturing concrete. Rice husk ash is used in concret with many advantages slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.
Rice husk ash rha has been reported to be a good pozzolan by numerous researchers. What are the advantages and disadvantages of rice husk. Development of high strength concrete using rice husk ash and slag written by sravan kumar guruvu, lakshmi kumar. Lowtech methods of grinding the ash were also investigated and were found to drastically increase the compressive strength of rhacement mortars in comparison to mortars made with unground rha. Burning the rice husk ash is a highly siliceous material that can be used as an admixture in concrete if the rice husk is burnt in a specific manner. Study on effect of natural and ground ricehusk ash concrete. Study of concrete properties using rice husk ash and. By using rice husk ash in concrete, we can improve the properties of concrete.
Air quality index, ambient air quality, air monitoring. This paper presents a comparative study on use of rha as partial. Optimum use of rice husk ash rha, obtained by open field burning method, is decided for improving workability, strength and durability of concrete. The efficiency of rice husk ash depends on the proportion of the cement, rice husk ash, and water content in the mixtures as well as the curing time. Rice husk ash rha is an agricultural waste product, and how to dispose of it is a problem to waste mangers. In the present investigation, a feasibility study is made to use rice husk ash as an admixture to an already replaced cement with fly ash portland pozzolana cement in concrete, and an attempt has been made to investigate the strength parameters of. Effect of rice husk ash on fresh and hardened properties of.
Rice husks contain organic substances and 20% of inorganic material. Thank you for asking rice husk ash is used in concrete construction as an alternative of cement. The rice husk ash is a green supplementary material that has applications in small to large scale. The main applications of rice husk ash in the construction are. The use of rice husk ash as a pozzolanic admixture in concrete. Rice husk ash rha, rich in silica content, can be produced from rice husk using appropriate combustion technique for use in concrete as a supplementary cementitious material. The concrete is mixed with rha in varying percentage of 1030%, with.
Experimental studies on concrete with rice husk ash as a. Rice husk ash rha is an abundant byproduct generated by the burning of rice husk. This superpozzolan can be used in a big way to make special concrete mixes. The incorporation of rice husk ash in concrete convert it into an ecofriendly supplementary cementitious. Effect of rice husk ash on cement mortar and concrete. Pdf study on properties of rice husk ash and its use as. A small addition of rha lesser than two to three by weight of the cement, to a given water cement ratio, is sufficient and helpful to improve the stability as well as the workability. Use of rice huskbark ash in producing selfcompacting concrete sumrerngrukzon 1 andprinyachindaprasirt 2 department of civil engineering, faculty of engineering, rajamangala university of technology phra nakhon rmutp, bangkok, a iland sustainable infrastructure research and development center, department of civil engineering, faculty of. Rice husk ash rha has been used as a highly reactive. The effect of grinding on the particle size and the surface area was first investigated, then the xrd analysis was conducted to verify the presence of amorphous silica in the ash. Rice husk ash rha is a highly reactive pozzolan malhotra and mehta, 1996 obtained when rice husks are calcinated below the crystallization temperature at 780 c yu et al. During mass concrete, as compared to opc concrete, rha is very.
Keywords rice husk ash pozzolan grinding rheology materials processing highperformance concrete 1 introduction rice husk ash rha is an abundant byproduct generated by the burning of rice husk. Paper open access related content study on concrete. Modified nansu method has been used for design mix as the study was carried out for medium strength of concrete. This paper investigates the properties of rice husk ash rha produced by using a ferrocement furnace. Its use can reduce the environmental impact of the cement industry. Feasibility of using rice husk ash as partial replacement for. The workability of the concrete, however, was reduced with the increase of cement replacement by rha. Approximately, for 100 kg of rice, 20 kg of rice husk are obtained. Experimental investigation on engineering properties of. Development of high strength concrete using rice husk ash. Study on properties of rice husk ash and its use as cement. Combine effect of rice husk ash and fly ash on concrete by. The work is based on an experimental study of roof tiles produced with ordinary portland cement. Rice husk ash is used in concrete construction as an alternative of cement.
The locally available rice husk ash can be of significant use in construction industry rather than the open air burning means of disposal which has harmful effect on the people and environment at large the use of rice husk ash for concreting will reduce the cost of producing concrete when implemented. The rice paddy milling industries give the byproduct rice husk. Study on properties of rice husk ash and its use as. It is proved as an environmentally friendly method of disposal of large quantities of waste materials that would otherwise pollute land, air and water. The effect of grinding on the particle size and the surface area was first investigated, then the xrd analysis was conducted to verify the. Rice husk ash rha in combine proportion started from 30% fa and 0% rha mix. Combustion is the process of burning carbon in the rice husk, which emits co 2 and generates heat energy for further use. It is also used as the admixture to make the concrete resistant against chemical penetration. International research journal of engineering and technology irjet eissn. The types, properties, advantages and uses of rice husk in construction is discussed. Jul 05, 2017 thank you for asking rice husk ash is used in concrete construction as an alternative of cement. Rice husk ash rha, produced after burning of rice husks rh has high reactivity and pozzolanic property. The admixtures may be added in concrete in order to enhance some of the properties desired specially.
Pdf use of rice husk ash as an admixture to substitute of. The durability and physical and mechanical properties of concrete were assessed by partially replacing cement and virgin aggregates with rha and rap, up to 20% and 50%. Compressive strength and flexural strength test are conducted on rhamp concrete mix. Pdf use of rice husk ash as an admixture to substitute.
The increase in rate of construction increases the rate demand of portland cement now a days. Research article use of rice huskbark ash in producing. Most of the evaporable components of rice husk are slowly lost during burning and the primary residues are the silicates. If you continue browsing the site, you agree to the use of cookies on this website. Benefits of use of rice husk ash in concrete open access. Due to urbanization it is estimated that the production of cement increase up to 200 million ton in 2015.
Pdf replacement of cement in concrete with rice husk ash. A study on use of cowdung ash and rice husk ash in concrete inderveer singh gurjar1, gautam bhadouriya2 1m. The high volume fly ash self consolidating concrete having 28day compressive strength level of 28. Concrete, rice husk ash, corrosion, strength, porosity 1. In this study, cement was replaced by waste rha as 5%,10% and 15% by weight for m25 mix. In the most recent decade, the use of waste materials in concrete production, particularly in addition to concrete has turn into an essential part. Study on properties of rice husk ash and its use as cement replacement material article pdf available in materials research 2 april 2010 with 6,385 reads how we measure reads. Visit for more related articles at journal of industrial pollution control. Jan 23, 2018 what are the advantages and disadvantages of rice husk. Abstract this research deals with the effects of using rice husk ash rha as a partial weight of cement replacement in concrete roof tile production. Malleswara rao 2 1 department, civil engineering, gitam university, 2 department of civil engineering, andhra university, visakhapatanam, a.
Yousift synopsis rice husk ash was prepared as a pozzolana by a special process such that the final product conformed to engin eering requirements in terms of physical and chemical properties, and the silica remained in an. Among all industries to reuse this product, cement, and concrete manufacturing industries are the ones who can use rice husk in a better way. Hence air conditioner operation is reduce resulting in electric energy saving. Variation of properties of concrete with rice husk. Moreover with the use of rice husk ash, the weight of concrete reduces, thus making the concrete lighter which can be used as light weight construction material. It constitutes 20% of the 500 million tons of paddy produced in the world 1. This paper discusses production process of rha from rice husk and the quality of rha produced using rudimentary furnace of the national university of malaysia ukm. The use of rice husk ash as a pozzolanic admixture in concrete smajila, marc on. The rice husk ash rha contain near about 85 % to 90 % amorphous silica. The split tensile strength results at the various ages such as 7and 28 days. Rice husk is an agricultural waste product which is produced in about millions of tons. This method helps in producing the rice husk ashes with amorphous silica and cellular structure products in an easier way. The rice husk ash produced by this method is highly pozzolanic.
The international journal of cement composites and lightweight concrete, volume 6, number 4 november 1984 use of rice husk ash in concrete moayad n. One of the most efficient uses of this byproduct is its direct combustion without the need for a heat exchanger with a proper furnace to generate. Characteristics of rice husk ash concrete workability. As the production rate of rice husk ash is about 20% of the dried rice husk, the amount of rha generated yearly is about 20 million tons worldwide hwang, 185. Rha can be used as a replacement for concrete 5 to 15%. Is 456 2000 8, recommends use of rha in concrete but does not specify. Yousift synopsis rice husk ash was prepared as a pozzolana by a special process such that the final product conformed to engin eering requirements in terms of physical and chemical properties. This paper presents a comparative study on use of rha as partial replacement of cement in concrete specimens. Study of concrete properties using rice husk ash and marble. Rice husk ash in concrete properties, advantages and uses. This paper presents the study of concrete mix design using rice husk ash and marble powder.
Rice husk ash rha possesses high pozzolanic activities and very suitable as partial replacement of cement in concrete. Introduction rice husk is an agricultural residue obtained from the outer covering of rice grains during milling process. Pdf effect of rice husk ash on concrete researchgate. In its simplest form, concrete is a mixture of paste and aggregates. The processing of rice into white rice removes the husk and germ. The current study and experimental investigation were taken to study the pro perties of concrete made with rice husk ash. They found that the rice husk ash as partial substitute of cement in. Lots of ways are being thought of for disposing them by making commercial use of this rha. Performance of rice husk ash in geopolymer concrete.
Ccarbon content as pozzolan in high performance concrete. This paper evaluates how different contents of rice husk ash added to concrete may influence its properties. These components are the parts that contain most of the nutritional value of rice. May 09, 2015 hence air conditioner operation is reduce resulting in electric energy saving. Ratnam3 published on 20160627 download full article with reference data and citations. Abdulhameed umar abubakar studied on nigerian rice husk ash rha in cement, concrete and mortar. Results from the experiments confirm that ground rice husk ash could be beneficially added into cement deep mixing to enhance the strength characteristics.
Their study indicated that the optimum replacement of cement by rha will be around 10% to 20% with finely ground rha. Pdf the rice husk is an agricultural waste which is obtained from milling process of paddy and approximately 22% of the weight of paddy is rice husk find. Among them, the two main ones in terms of quantity and efficiency are. Physical characteristics and chemical composition of mineral admixtures can be fulfilled by burning rice husk into ash. As the rice husk ash is waste material, it reduces the cost of 25. Pozzolanic activity of rice husk ash rha depends on i. Feasibility of using rice husk ash as partial replacement. Production of rice husk ash for use in concrete as a. It has a highly microporous cellular structure, which helps its pozzolanic reaction in mixtures containing portland cement. Combine use of fly ash and rice husk ash in concrete to improve. The nitrogen adsorption test was done to verify the effect of grinding on the specific surface area of rha. Rha concrete gave excellent improvement in strength for 10% replacement 30. Rice husk ash rha has been used as a highly reactive pozzolanic material to improve the microstructure of the interfacial transition zone itz between the cement paste and the aggregate in highperformance concrete biu et al, 2005.
Sources of rice husk ash rha will be in the rice growing regions of the world, as for example china, india, and the fareast countries. Efficiency of rice husk ash as cementitious material in high. A 20% replacement of unprocessed cambodian rice husk ash was deemed appropriate for use in smallscale, rural structural applications. Sustainable use of rice husk ash in cementbased materials. The feasibility of using agricultural waste of rice husk to prepare highly reactive rice husk ash for sustainable cementbased material was explored t. So, a way to use these byproducts to make a new product is the best sustainable idea. Unprocessed rice husk ash as a partial replacement of. Indian standard code of practice for plain and reinforced concrete, is 456 2000.
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