Experimental investigation on engineering properties of concrete incorporating reclaimed asphalt pavement and rice husk ash mulusew aderaw getahun 1,2, id, stanley muse shitote 3 and zachary c. Rhabased concrete has high strength and high durability performance anwar et al. The density of concrete containing rice husk ash is similar to the normal weight concrete. Rice husk from local rice mills was burnt completely in open field condition and sieved with 150 micron is sieve. What are the advantages and disadvantages of rice husk. In this present paper, the result of some authors with the use rha as a fractional substitution of cement on the properties of concrete like workability, permeability, compressive and. As the rice husk ash is piling up every day, there is a pressure on rice industries to find a solution for its disposal. 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. Effect of rice husk ash in concrete as cement and fine aggregate nithyambigai. Introduction rice husk is the outer cover of paddy and accounts for 2025 % of its weight. It has a highly microporous cellular structure, which helps its pozzolanic reaction in mixtures containing portland cement. Innovative infrastructure solutions study on concrete with rice husk ash ayesha siddika 0 1 2 md. It is most essential to develop ecofriendly concrete from rha.
Flexural strength vs age in days of control concrete 87 20. It has economical and technical advantages to be used. Effect of rice husk ash on hightemperature mechanical. Performance of rice husk ash in geopolymer concrete. Effect of rice husk ash on workability and strength of concrete. Rice husk ash rha added to concrete influences the ph of the samples. The processing of rice into white rice removes the husk and germ. In todays construction industry concrete is major and versatile building material and in concrete, cement is the most expensive material and to. Effect of rice husk ash percentage on compressive strength of concrete 85 18. Due to pozzolanic reactivity, rice husk ash is used as a supplementary cementing material in concrete. The value is higher than the value obtained in 5 for acha husk ash 48. Rha can be used in concrete to improve its strength and other durability factors. Permeability is the most important aspect of durability and service lives of concrete. Pdf properties of concrete block containing rice husk ash.
Rice husk ash in concrete properties, advantages and uses. The ash of rice husk contains approximately 90% silica, which is a highly porous structure and is lightweight, with high specific surface area. Rice husk ash the husk was collected from paddy field in kuala selangor, malaysia, it was then burned in the laboratory by using a ferrocement furnace8. Characteristics of rice husk ash concrete workability and. Rice husk ash is one of the agrobased waste th at have been investigated in the past, akinyele et al 2015 investigated the use of rice husk and rice husk ash as a filler in the production of clay bricks, the chemical composition of the rice husk ash was investigated and the work revealed that. Effect of rice husk ash on workability and strength of. Microwave incinerated rice husk ash mirha, taguchi method 1. Coarse aggregate of 20 mm graded nominal size, river. Recent trend of technology is towards waste utilization and cost reduction in construction industries. Rice husks contain organic substances and 20% of inorganic material. Influence of rice husk ash as supplementary material in. Effect of rice husk ash on workability and strength of concrete avinash babu srinivasreddy 1, timothy j mccarthy 2 and eric lume 3 1masters student of civil engineering, university of wollongong 2professor of structural engineering, university of wollongong 3honorary fellow, university of wollongong abstract. The rice husk ash is a green supplementary material that has applications in small to large scale.
Rha, the product of burning raw rice husk, has a greater content of sio 2 by more than 90 %. Introduction as an one alternative that has been widely used as a. International journal of cement composites and lightweight concrete, 64. Geopolymer concrete is concrete which does not utilize any portland cement in its production. Efficiency of rice husk ash as cementitious material in high. 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.
Special attention is paid to its efficiency for increasing the strength by partial cement. The usage of rice husk either in its raw form or in ash form is many. From the current estimate uk market 1, the utilization of foamed concrete has in the past years grown. Effect of rice husk ash in concrete as cement and fine aggregate. 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.
Study on properties of rice husk ash and its use as cement. 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. Rice husk ash cvbt, center for vocational building. Its use can reduce the environmental impact of the cement industry. The impervious microstructure of rice husk ash concrete provides better resistance to the sulphate attack, chloride ingress, carbonation etc. The fibre reinforced flyash concrete frfac has been successfully used to minimize cavitations damages in hydraulics structures. Abiero gariy 4 1 civil engineering department, pan african university institute for basic sciences, technology and innovation pausti, 62000 00200. A series of unconfined compression tests on cementrhastabilized clay are conducted to investigate the influence of rha on the mixture properties. They found that at longterm period, the compressive strength of tbc concrete was comparable to the control mixes even at opc replacement of up to 40% with the pozzolanic material. In this study, a lowcarbon rice husk ash rha was used as a supplementary cementing material in cement mortars to evaluate. Effect of % replacement of rice husk ash on compressive strength w.
In this respect, the geopolymer concrete with a much lower environmental footprint shows considerable promise for application in the concrete industry 4. To study the strength development of rice husk ash rha concrete in comparison to control concrete, compressive strength tests were conducted at the ages of 1, 3, 7, 28, 45 and 56 days. Unprocessed rice husk ash as a partial replacement of cement. Over 5% of global co 2 emission is attributed by cement production. Rice husk ash percentage was gradual increased from 7. Advances in the use of rice husk ash in self consolidating. It is formed from hard materials, including silica and lignin, to protect the seed during the growing season. By converting rice husk into rice husk ash rha, it can be used in concrete as a fractional substitution of cement because of high silica quantity in rha. Use of ash of agricultural waste as partial replacement of. Tensile strengths of concrete containing rice husk ash. Pdf effect of partial replacement of cement by rice husk ash in. 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.
It is also used as the admixture to make the concrete resistant against chemical penetration. An artificial neural networks model for predicting. Use of rice husk ash in concrete syed mehdi abbas 1, dada patil 2, sanjeev raje 3 1. Both can be used to improve strength and durability properties of concrete. Applications of rice husk ash in building constructions rice husk ash rha plays two roles in concrete constructions.
A new approach to improve durability of rice husk ash blended. Comfort temperature values with lower energy consumption are possible by using lightweight concrete in construction elements. Effect of rice husk ash on fresh and hardened properties. Effect of air entrainment on rice husk ash concrete zhang and malhotra 1996 studied the effect of air entraining admixture in the concrete that is replaced with rice husk ash. Effect of rice husk ash on cement stabilized laterite. 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. Effects of rice husk ash rha produced from different temperatures on the performance of concrete leong tuck lun a project report submitted in partial fulfilment of the requirements for the award of the degree of bachelor hons. Because the chemical reaction that takes place in this case is a polymerization process, he coined the term geopolymer.
For this work rha was obtained from manikaji metachem private limited at murtizapur. Compressive strength and durability properties of rice husk ash concrete. Pdf effect of rice husk ash on concrete researchgate. Characteristics of rice husk ash concrete workability. Effect of rice husk ash on fresh and hardened properties of. Most of concrete deterioration processes depend on deleterious substances penetrating from the surrounding environment into the bulk of the concrete through its surface. Preparation of mix design replacement of cement with rha as different proportions with cement.
Effective utilization of rice husk ash by partial replacement of cement g m institute of technology, davanagere 577006 page 2 concrete. Ricehuskbased superplasticizer to increase performance. Use of ultrafine rice husk ash with highcarbon content as. The effect of utilizing rice husk ash on some properties. It flows under its own weight while remaining homogeneous in. Rice husk ash rha is an agricultural waste which is a pozzolanic material that can be. Among all industries to reuse this product, cement, and concrete manufacturing industries are the ones who can use rice husk in a better way. However, in rural cambodia, where the use of rice husk ash concrete could. Efficiency of rice husk ash and fly ash as reactivity. G assitant professor department of civil engineering srm university, ramapuram chennai, tamil nadu abstractcement is the most expensive constituents of concrete. Application of taguchis approach in the optimization of. 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. This paper investigates the properties of rice husk ash rha produced by using a ferrocement furnace. In riceproducing countries rice husk asha material naturally high in silicacan be used.
Introduction foamed concrete is an up and coming material in construction application. This report evaluates how different contents of rice husk ash rha added to concrete may influence its physical and mechanical properties. Influence of rice husk ash as supplementary material considering these advantages, this study aims to investigate the viability of rice husk ash rha as supplementary material in cement paste and concrete, in the hope of recommending this as mineral admixture in the production of concrete. Rice husk ash is an agricultural product on which rice husk is burnt into ashes. This research was experimentally carried out to investigate the effects of introducing rice husk ash rha as a partial replacement of ordinary portland cement opc on the structural properties of concrete. Rice husk ash, including the type of fly ash results from the combustion of rice husk in rice mills contain elements of silica dioxide sio 2 is higher than the silica dioxide present in the cement, so that the rice husk ash has potential as a substitute for cement in the concrete mix. Either way, once you advances in the use of rice husk ash in self consolidating concrete pdf find yourself single, advances in the use of rice husk ash in self consolidating concrete pdf thoughts soon come around to meeting other women. Lots of ways are being thought of for disposing them by making commercial use of this rha.
The tests results are reported in table for control. Rice husk ash and pumice in lightweight concrete of. Selfcompacting concrete scc is relatively a recent development in the construction world. Broiler bed ash was obtained by incinerating broiler bed based on rice husk. Coarse aggregate of 20 mm graded nominal size, river sand zone iii type and 53 grades pozzolana portland cement ppc were used for this work. Pdf transport and microstructure properties of rice husk.
Index termlightweight aggregate concrete lwac, rice husk ash rha, pumice, density, and mechanical properties. The use of rice husk ash as a partial replacement of cement has been carried out, among others 3, 4, 5 making concrete by adding rice husk ash and superplasticizer can increase the strength. This furnace figure 1 can hold up to 60 kg of rice husks. Sathiya experimental study on bagasse ash in concrete international journal. Strength characteristics of concrete made with rice husk. Pozzolanic activity of rice husk ash rha depends on i.
The effect of utilizing rice husk ash on some properties of. Rice husk ash rha the rice husk used was obtained from ile ife, nigeria. Reference 10 studied the corrosion performance of rice husk ashblended concrete and concluded that rha as a. This superpozzolan can be used in a big way to make special concrete mixes. The use of rice husk ash as partial replacement for cement.
The study examines the use of rice husk ash as partial replacement for cement in concrete by determining various properties of rice husk ash through laboratory experiments. The characteristics of the ash are dependent on the components, temperature and time of burning hwang, 185. So, enhancing both transport and microstructure of the concrete in the exposed. The rice husk ash to be more precise have characteristics based on the components, the temperature of burning and the time of burning. Fracture behavior of concrete with rice husk ash replacement under uniaxial compressive load. Based on provided range, rice husk ash polymer modified concrete falls in the excellent quality of concrete. Pozzolanic activity of rice husk ash rha depends on i silica content, ii silica crystallization phase, and. The present study investigates the chemical and morphological nature of rha and silica fume sf. The main applications of rice husk ash in the construction are. Influence of fibers and fly ash on mechanical properties. International journal of trend in scientific research and development ijtsrd international open access journal issn no. An artificial neural networks model for predicting permeability properties of nano silicarice husk ash ternary blended concrete, international journal of concrete structures and materials, 20, pp. This paper attempts to bring out the effectiveness of rice husk ash as a versatile concrete admixture and discusses some versatile application of rice husk ash concrete. Concrete blocks containing rice husk ash should be promoted as a new construction material to replace the existing blocks in market.
Sustainable concrete, rice husk ash, fly ash, air content, mechanical properties, water permeability introduction rice husk ash rha is an agricultural waste byproduct, and its disposal presents a major challenge by waste managers. Physical characteristics and chemical composition of mineral admixtures can be fulfilled by burning rice husk into ash. Compressive strengths of concrete hollow blocks using rice. And rice husk ash, pulverised fuel ash pfa, sawdust ash, corn ash and so on to partially replace cement 12, 5, and 20. These components are the parts that contain most of the nutritional value of rice. Experimental study on effect of rice husk ash on strength. The compressive strengths of the cubes at 10% replacement were 12. The paper assesses the use of rice husk ash rha as an admixture in concrete in normal environment by determining the effect of addition of rha of 0%, 5%, 10% and 15% respectively to concrete. Rice husk ash as a partial replacement of cement in high. Abdullah al mamun 3 ayesha siddika rice husk ash rha possesses high pozzolanic activities and very suitable as.
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. Strength characteristics of concrete made with rice husk ash. Fibre reinforced concrete frc is very useful in extreme climate where shrinkage of concrete causes cracks. Pdf study on properties of rice husk ash and its use as. From the results, upv of the rice husk ash polymermodified concrete ranges from 4. Characterization studies by xray diffraction, fourier transform infrared spectroscopy and field emission scanning electron microscope of the material indicated that the amorphous silica from rice husk reacts with the alkaline activator that is, sodium hydroxide and results in the in situ synthesis of sodium silicate and lignin. Effects of organic waste rice husk on the concrete properties for farm buildings 41 due to their low unit weight and high porosity, lightweight concrete elements are preferred as isolation materials.
As a result there is greater possibility to gain more number of carbon credits. They concluded that with the increase in replacement percentage of rice husk ash, the air entrainment admixture amount also increases. The silicates are the component that gives the pozzolanic reactivity capacity for rice husk ash. But getting back in the game, especially after a longterm relationship, can be daunting. Samples with dimensions of 15 x 15 cm were tested, with 12. Experimental investigation on engineering properties of. The use of rice husk ash in low cost sandcrete block. After collection, the rice husk was burnt under guided or enclosed place to limit the amount of ash that will be blown off the ash. Combine effect of rice husk ash and fly ash on concrete by.
The researchers investigated the possibility of using rice husk ash in reducing the amount of cement in making concrete hollow blocks. Rice husk is one of the potential sources of biomass to get a maximum percent of sio2 that is required to synthesize molecular sieves. The international journal of cement composites and lightweight concrete, volume 6, number 4 november 1984 use of rice husk ash in concrete moayad n. The objective of the study includes, determining the specific gravity of rha, the effect of rha on compressive strength of concrete and on properties of concrete such as. Rha from parboiling plants exerts critical environmental threat. Evaluation of sulfate resistance of portland cement mortars containing lowcarbon rice husk ash harish kizhakkumodom venkatanarayanan1 and prasada rao rangaraju, p. The effect of rice husk ash content as partial replacement of cement on compressive strength and volume changes of different mixes is investigated.
Strength development of concrete with rice husk ash. Research paper effect of rice husk ash on properties. Pdf impact of rice husk ash on cement concrete international. May 09, 2015 rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic. Compared with conventional mineral admixtures such as fly ash fa and slag, rha has a huge specific surface area and high ac. New building materials are used to accelerate the construction work, in which the mixture plays an important role in characteristics of 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. Rice husk ash rha in combine proportion started from 30% fa and 0% rha mix together in concrete by replacement of cement with the gradual increase of. A small amount addition of rha lesser than two to three by weight of the cement, to a given water cement ratio, is sufficient and. Pdf mechanical properties of self compacting concrete. Mix design of grade m35 by replacement of cement with. Rha is found to be good material which fulfils the physical characteristics and chemical composition of mineral admixtures. The ash produced by controlled burning of the rice husk between 550.
After collection, the rice husk was burnt under guided or enclosed place to limit the amount of ash that will be blown off the ash was ground to the required level of fineness and sieved through 600. A 20% replacement of unprocessed cambodian rice husk ash was deemed appropriate for use in smallscale, rural structural applications. Modified nansu method has been used for design mix as the study was carried out for medium strength of concrete. Properties of the material used must be better understood first. Pdf replacement of cement in concrete with rice husk ash. Studies on the effect of rice husk ash as cement admixture. Chemical composition of rice husk ash constituent % composition fe2o3 0. So to gain this, the silica must remain in its noncrystalline form. The first role is using rice husk as a substitute for portland cement which leads to the reduction of the cost of concrete, and the other role is as. The rice husk, also called rice hull, is the coating on a seed or grain of rice.
Rice husk is waste from the processing of grain into rice, rice husk ash is carried out by many researches related to concrete which have various functions, such as admixture, partial replacement. The present study was carried out to evaluate the influence of addition of fibres and class c flyash on the mechanical properties of concrete. The rice husk ash is used as a green supplementary material that has applications in small to large scale. 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 has also been reported to improve the properties of concrete or cement paste due to the. 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. Pdf structural properties of rice husk ash concrete.
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