Introduction in this century, the utilization of rice husk ash rha as cement replacement is a new trend in concrete technology. Properties of cement paste containing rice husk ash. The rice husk ash will result in the decrease of setting time. Coarse aggregate of 20 mm graded nominal size, river. Pdf study on properties of rice husk ash and its use as. Compressive strength, porosity, chloride penetration, and corrosion of scc were determined. Rice husk ash and pumice in lightweight concrete of engineering materials to improve mechanical strength portland cement composites moh azhar1,a, azwar manaf2,b, bambang soegijono3,c 1faculty of maths and science, university of indonesia, depok 16424.
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. Rice husk from local rice mills was burnt completely in open field condition and sieved with 150 micron is sieve. Thank you for asking rice husk ash is used in concrete construction as an alternative of cement. Mechanical properties of rice husk ash rha high strength. Physical characteristics and chemical composition of mineral admixtures can be fulfilled by burning rice husk into ash. Rice husk ash in concrete properties, advantages and uses. This paper presents the use of blend of portland cement with rice huskbark ash in producing selfcompacting concrete scc. It is seen that maximum stability is observed by rice husk ash followed by stone dust and slag as filler materials. The manufacture of a cement extender from ricehusks using a.
Its use can reduce the environmental impact of the cement industry. The manufacture of a cement extender from ricehusks. They concluded that with the increase in replacement percentage of rice husk ash, the air entrainment admixture amount also increases. Effect of rice husk ash on hightemperature mechanical. Rice husk ash rha used as partial replacement for ordinary portland cement opc in concrete. Jul 05, 2017 thank you for asking rice husk ash is used in concrete construction as an alternative of cement.
Rice husk asha unique supplementary cementing material. May 14, 2014 this paper presents the use of blend of portland cement with rice husk bark ash in producing selfcompacting concrete scc. Use of rice husk ash in concrete syed mehdi abbas 1, dada patil 2, sanjeev raje 3 1. For control concrete, indian standard is method of mix design is adopted. Pozzolanic activity of rice husk ash rha depends on i. Besides, as far as the sustainability is concerned, it will also help to solve problems otherwise. The value of retained stability of the asphalt concrete mixture using stone dust, rice husk ash and slag are 112. This is justified by the reason higher water absorbing demand and larger surface area. 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. Innovative infrastructure solutions study on concrete with rice husk ash ayesha siddika 0 1 2 md. Rice husks contain organic substances and 20% of inorganic material.
Efficiency of rice husk ash as cementitious material in. In the preparation of rice husk concrete, cement was replaced at various percentage levels such as 5%, 10%, 15% and 20%. The suitability of rice husk ash rha and saw dust ash sdablend, which are waste materials from the agricultural and timber industries respectively, as partial replacement of ordinary portland cement in the production of sandcrete hollow blocks has been investigated. Decrease in water absorption, from results acquired from 6 tests concrete and three tests on mortar samples, its observed that as much as 10% rha with concrete and mortar enhances all qualities figures 2a to c which is observed that 12. 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 use of rice husk ash as a pozzolanic admixture in concrete. Rice husk ash, cement, concrete, compressive strength created date. Production of rice husk ash for use in concrete as a. Rice husk ash rha the rice husk used was obtained from ile ife, nigeria. Special attention is paid to its efficiency for increasing the strength by partial cement.
Rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic. 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. Evaluation of rice husk ash and bone ash mixed as partial. The use of rice husk ash as a pozzolanic admixture in concrete smajila, marc on. These are prominent in countries where the rice production is abundant. Rice husk is one of the potential sources of biomass to get a maximum percent of sio2 that is required to synthesize molecular sieves. This is because rice husk ash contains 85% to 95% weight percent of amorphous silica. Effect of rice husk ash on fresh and hardened properties of. Research article use of rice huskbark ash in producing. Syed mehdi abbas, dada patil, sanjeev raje subject. Rice husk ash concrete thesis proposal i help to study. 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.
Introduction centof the rice paddy is husk, giving an annual total production of 120 million ton. Rice husk ash is an agroindustrial waste product produced as a result of burning the outer cover of rice grain, called rice husk, which has a great fuel value. Rice husk is an agricultural residue which accounts for 20% of the 649. Rice husk ash importance of fineness for its use as a. This paper evaluates how different contents of rice husk ash added to concrete may influence its properties. Effect of rice husk ash on cement mortar and concrete. New building materials are used to accelerate the construction work, in which the mixture plays an. Effect of rice husk ash on workability and strength of concrete. The paper presents the experimental investigation conducted on rice husk ash rha concrete to evaluate the compressive strength and to study its durability properties. Dec 31, 2011 the paper presents the experimental investigation conducted on rice husk ash rha concrete to evaluate the compressive strength and to study its durability properties. 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. The produced partially burnt husk from the milling plants when used as a fuel also contributes to pollution and efforts are being made to overcome this environmental issue by utilizing this material as a supplementary cementing material 2. Rice husk ash as a partial replacement of cement in high.
Effect of rice husk ash and saw dust ash blend on the. United nations industrial development organization with govt. Rice husk ash pozzolanic material for sustainability kartini. Concrete blocks containing rice husk ash should be promoted as a new construction material to replace the existing blocks in market.
Lots of ways are being thought of for disposing them by making commercial use of this rha. Hamid, rice husk ashan alternativematerial in producing high strength concrete,international conference onengineering materials, june 811, 1997, ottawa, canada, pp. Abstract the mixture of rice husk ash rha and bone ash ba were used as partial replacement for cement in concrete production. Efficiency of rice husk ash as cementitious material in high. Influence of rice husk ash and slag as fillers in asphalt. Visit for more related articles at journal of industrial pollution control. For this work rha was obtained from manikaji metachem private limited at murtizapur. 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. A series of unconfined compression tests on cementrhastabilized clay are conducted to investigate the influence of rha on the mixture properties.
Rice husk ash rha is an agricultural waste which is a pozzolanic material that can be. Rice husk ash percentage was gradual increased from 7. The types, properties, advantages and uses of rice husk in construction is discussed. The purpose of the investigation was to determine the effects of rha in cement products exposed to hostile environments. Pdf replacement of cement in concrete with rice husk ash. It has been shown to be biologically inactive and to make an excellent hydroponic matrix in which diseasefree plants can be raised and seeds germinated. Rice husk ash has also been used as a lowcost sterile filler in plastics and soap. Research article use of rice huskbark ash in producing self. Study on effect of natural and ground ricehusk ash concrete. Selfcompacting concrete, rice husk ash, fly ash, rheological properties. Pdf properties of concrete block containing rice husk ash. 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. The performance of rice husk ash in concrete is of factors influencing the amount of silica added. Experimental studies on concrete with rice husk ash as a.
This superpozzolan can be used in a big way to make special concrete mixes. The excessive amount of burned rice husk ash possibly has no use at all and disposing it is also a. 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. After collection, the rice husk was burnt under guided or enclosed place to limit the amount of. Ina iland,ricehuskbarkashisaresidueobtainedfrom the burning of rice husk bark as fuel source in the small power generation plants ai power supply company ltd. One percent of the earths surface is used for cultivation of rice and it is the staple food for billions of people. In this study, cement was replaced by waste rha as 5%,10% and 15% by weight for m25 mix. Characteristics of rice husk ash concrete workability and. Rice husk ash cvbt, center for vocational building. Properties of the material used must be better understood first. Rice husk ash, high strength concrete, pozzolanic activity i. 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 was obtained under different burning conditions from 400 to 1200 c. The variation of setting time with the variation of rice husk ash amount in concrete. Use of rice huskbark ash in producing selfcompacting concrete. Rice husk ash and pumice in lightweight concrete of. The ash produced by controlled burning of the rice husk between 550. Use of rice huskbark ash in producing selfcompacting. Broiler bed ash was obtained by incinerating broiler bed based on rice husk. Effective utilization of rice husk ash by partial replacement of cement g m institute of technology, davanagere 577006 page 2 concrete. The changes in the properties of rha were investigated by xrd, dat, and microanalytical techniques. Rice husk ash, pozzolan, compressive strength, permeability, durability 1.
The use of rice husk ash as a pozzolanic admixture in concrete paperback april 27, 2010 by marc smajila author see all 2 formats and editions hide other formats and editions. Effect of rice husk ash on workability and strength of. Ct was partially replaced with ground rice huskbark ash grhba at the dosage levels of 0%40% by weight of binder. The main applications of rice husk ash in the construction are. Compressive strength and durability properties of rice husk. So, the use and practical application of rice husk ash for concrete manufacturing are important. May 09, 2015 rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic.
The rice paddy milling industries give the byproduct rice husk. Replacement of cement with rice husk ash in concrete. The chemistry and technology of cements made from ricehusk ash. Rice husk ash as a pozzolanic reactive material can be used to improve surface area of transition zone between the microscopic structure of cement paste and. Study on properties of rice husk ash and its use as cement. As a result there is greater possibility to gain more number of carbon credits. It is estimated that 1,000kg of rice grain produce 200kg of rice husk. 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. Characteristics of rice husk ash concrete workability. Besides control concrete was also prepared for comparison purpose. When rha obtained at different burning conditions was added to cement paste or mortar, several properties such as hydration, setting time, porosity, and.
The ricehusk ash rha is a waste residue from incinerating ricehusk. Unciv report r208, university of new south wales, australia, 1983. Burning the rice husk ash is a highly siliceous material that can be used as an admixture in concrete if. In this investigation, a feasibility study is made to use rice husk ash as an. Harish kizhakkumodom venkatanarayanan and prasada rao. The properly rice husk ashes are found to be active within the cement paste. Included are the results of laboratory research on hydrochloric acid attack, sulfate attack, alkalisilica. 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 rice husk ash is a green supplementary material that has applications in small to large scale. Effect of rice husk ash on fresh and hardened properties. Ina iland,ricehuskbarkashisaresidueobtainedfrom the burning of rice huskbark as fuel source in the small power generation plants ai power supply company ltd.