Reduction in water absorption, from results obtained from 6 tests concrete and 3 tests on mortar samples, it is observed that up to 10% rha with concrete and mortar enhances all properties figures 2a to c and it is observed that 12. Rice husk ash is one of the promising pozzolanic materials that can be blended with portland cement for the production of dura ble concrete and at the same time it is a value added product. Percentage grade of cement rice husk fine coarse water super replacement concrete in kgs ash aggregate aggregatein ltrs plasticizer. Compressive strength and durability properties of rice husk. This research has been undertaken to study the main characteristics of the rice husk ash rha, properties of fresh concrete and development of the fundamental. Visit for more related articles at journal of industrial pollution control.
Contribution of rice husk ash to the properties of mortar. Rice husk ash is a good superpozzolan which can be used to make special concrete mixes. Rice husk ash in concrete properties, advantages and uses. Concrete technology rice husk ash as partial replacement. The effect of rice husk ash used as supplementary cementing. Effect of partial replacement of cement by rice husk ash. Reducing cement content in masonry with rice husk ash, a. Cost analysis showed that the cost of ingredients k. Pdf properties of concrete block containing rice husk ash. Moses, effect of binder type on chloride penetration in mortar, 4 th int. This paper presents benefits resulted from various ratios of rice husk ash rha on concrete indicators through 5 mixture plans with proportions of 5, 10, 15, 20 and 25% rha by weight of cement in addition to 10% micro silica ms to be compared with a reference mixture with 100% portland cement. The compressive strength at 3 days, 7days and 28 days have been obtained with normal curing condition. Apr 11, 2016 learn how a rice miller can earn extra income.
This paper presents a comparative study on use of rha as partial replacement of cement in concrete specimens. Special attention is paid to its efficiency for increasing the strength by partial cement. Assessment of optimal level of replacement of strength and permeability properties of concrete. The rice husk ash rha contain near about 85 % to 90 % amorphous silica. Experimental studies on concrete with rice husk ash as a. The variation of water consistency with the varying quantity of admixtures in the. Raw rice husk as aggregate dried rice husk can be used to make light weight concretes for nonstructural purposes as a sustainable replacement for. Effect of grinding of lowcarbon rice husk ash on the. Fly ash, slag, silicam fume and rice husk ash in concrete. About 70 million tons of rha is produced annually worldwide 5. Impact of rice husk fiery debris on cement concrete is a lab give an account of cement concrete is that the consuming of rice husks rh has made a high pozzolanic reactivity and property. Sheshagirirao, high performance concrete with rice huskashasmineraladmixture,ici journal, apriljune 2003, pp.
Pdf concrete is well known is a heterogeneous mix of cement, water and aggregates. Asce journal of construction and building materials, vol. 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. Rice husk ash, pozzolan, compressive strength, permeability, durability 1.
Rice husk is an agrowaste material which is produced in about 100 million of tons. Concrete blocks containing rice husk ash should be promoted as a new construction material to replace the existing blocks in market. Effect of rice husk ash on hightemperature mechanical. The current study and experimental investigation were taken to study the pro perties of concrete made with rice husk ash. Ash obtained from waste materials, rice husk ash and broiler bed ash, was considered as partial replacement for portland cement. 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. Rice husk asha unique supplementary cementing material. Review of the researches on physical, mechanical and structural properties. The use of rice husk ash as a pozzolanic admixture in concrete. Using rice husk ash as a cement replacement material in concrete. Besides, as far as the sustainability is concerned, it will also help to solve problems otherwise. The addition of rice husk ash to a concrete mixture has been proven to increase corrosion resistance. May 09, 2015 rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic.
Jul 05, 2017 thank you for asking rice husk ash is used in concrete construction as an alternative of cement. Properties of rice husk ash the typical chemical composition and physical properties of rha are given in table 1 mehta 1992. Rice husk ash rha possesses high pozzolanic activities and very suitable as partial replacement of cement in concrete. Reduction in water absorption, from results obtained from 6 tests concrete and 3 tests on mortar samples, it is observed that up to 10% rha with concrete and mortar enhances all properties and it is observed that 12. 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. Hilmi bin mahmud, rice husk ash as a cement replacement material in concrete the malaysian experience, the 4 th jspsvcc seminar on integrated engineering, kyoto, japan, oct. Globally concrete is the backbone for the development. In the ancient period, construction work was mostly carried out with help of mudstone from industry. Rice husk ash, cement, concrete, compressive strength, split tensile strength, rha. The types, properties, advantages and uses of rice husk in construction is discussed. The use of rice husk ash as a pozzolanic admixture in concrete smajila, marc on. Impact of rice husk fiery debris on cement concrete a lab give an account of cement concrete is that th. Ganesana et al 2 investigated rice husk ash blended cement with respect to assessment of. Graph representing the variation of airentraining admixture aha, with the rice husk ash content in percentage.
Strength development of concrete with ricehusk ash. Compressive strength and durability properties of rice. This paper reports an investigation on the mechanical properties and durability of high strength concrete containing rice husk ash rha. Rice husk ash rha is obtained by burning of rice husk in a controlled manner.
Effect of cement replacement by rice husk ash on soft soil. It is proposed to study the possibilities of replacing cement with locally available material rice husk ash rha without sacrificing the strength and workability of. So, the use and practical application of rice husk ash for concrete manufacturing are important. In conclusion, the high performance of masonry blocks can be produced using rice husk ash rha as cement replacement material. Mixes with 20% and 40% cement replacement with rha the latter contained a wr were selected. This paper presents benefits resulted from various ratios of rice husk ashrha on concrete indicators through 5 mixture plans with proportions of 5, 10, 15, 20 and 25% rha by weight of cement in addition to 10% micro silica ms to be compared with a reference mixture with 100% portland cement. Studies on the effect of rice husk ash as cement admixture. Three types of lightweight concrete presenting equivalent workability were produced table 2, control concrete ctl with 100% of portland cement cem i, class 42. Rice husk ash, concrete, opc, compressive strength, admixture. Effect of rice husk ash on fresh and hardened properties.
Mechanical properties and durability of high strength. Rice husk ash rha is obtained by the combustion of rice husk. Rice husk ash rha is an agricultural waste which is a. Introduction in this century, the utilization of rice husk ash rha as cement replacement is a new trend in concrete technology. Concrete with rice husk ash content of 10% for different grades. Properties of the material used must be better understood first. Pdf the rice husk is an agricultural waste which is obtained from milling. Rice husk is a major agricultural waste and is considered a worthless byproduct of the rice milling industry. In this investigation, a feasibility study is made to use rice husk. Rice husk ash rha the rice husk used was obtained from ile ife, nigeria.
Pdf impact of rice husk ash on cement concrete international. 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. Strength development of concrete with rice husk ash. Pdf replacement of cement in concrete with rice husk ash. Effect of rice husk ash on properties of concrete krishi sanskriti. It invoved the determination of workability and compressive strength of the concrete at different level of replacement. Mixtures containing 10% rha by weight of cement and wcm of 0. Rice husk ash cvbt, center for vocational building.
The purpose of the investigation was to determine the effects of rha in cement products exposed to hostile environments. Thank you for asking rice husk ash is used in concrete construction as an alternative of cement. Advantages of using rice husk ash in concrete the use of rha in concrete has been associated with the following essential assets. The production of ssc pozzolons may contain rice husk ash, fly ash, silica fume, bentonite. The compressive strength and temperature resistance were tested at dif.
Addition of rice husk ash to portland cement not only improves the. The rice husk ash has been taken for this present study due to its easy availability and effective pozzolonic properties that are expected to improve the mechanical strength properties of concrete. The results indicated that 30% rice husk ash was the appropriate content for partial cement replacement to produce a stabilized soil strength of 424, 722, 915 and 1,126 kpa at 3, 7, 14 and 28 d curing, respectively. Comparison of two processes for treating rice husk ash for use in high performance concrete. By using rice husk ash in concrete, we can improve the properties of concrete. International journal of cement composites and lightweight concrete, 64. Besides control concrete was also prepared for comparison purpose. A series of unconfined compression tests on cementrhastabilized clay are conducted to investigate the influence of rha on the mixture properties. Indian standard code of practice for reinforced concrete and. New building materials are used to accelerate the construction work, in which the mixture plays an important role in characteristics of concrete. Rice husk from local rice mills was burnt completely in open field condition and sieved with 150 micron is sieve. These are prominent in countries where the rice production is abundant.
Properties of blended cements made from rice husk ash. Characteristics of rice husk ash concrete workability and. Different amounts of cement in concrete were replaced by rha and fly ash fa, used as mineral admixtures, under the condition of a constant binder content. 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. Corrosion performance of rice husk ash blended concrete. Rice husk ash rha is obtained by the combustion of rice husk and has been found to be super pozzolanic. In the preparation of rice husk concrete, cement was replaced at various percentage levels such as 5%, 10%, 15% and 20%. The compressive strengths developed by the scc mixes with rha were comparable to the control concrete. Rice husk ash percentage was gradual increased from 7. Approximately, 20 kg of rice husk are obtained from 100 kg of rice. Rha was incorporated either as an admixture or as cement replacement material.
Concrete mixtures with ternary blended cements containing fly ash and rice husk ash. Effects of rice husk ash rha on the strength and temperature resistance of concrete were investigated. The cement has been replaced by rice husk ash rha accordingly in the range of 5%, 10%, 15%, 20% and 25% by weight of cement and 10% of silica fume in common for m20 mix. Higher elastic moduli and reduced permeabilities were observed along with better sulfate and acid resistance. Special attention is paid to its efficiency for increasing the strength by. Effective utilization of rice husk ash by partial replacement of cement g m institute of technology, davanagere 577006 page 2 concrete. A study on performance of concrete by partial replacement of. Proceeding of the 7th international conference, canmetaci on fly ash, silica fume, slag and natural pozzolans in concrete, chennai, sp. Coarse aggregate of 20 mm graded nominal size, river. The rice husk ash has been taken for this present study due to its easy availability and effective pozzolonic properties that are expected to improve the. When properly burnt, it has high silica content and can be used as an admixture in mortar and concrete. One of such materials is the rice husk which under controlled burning, and if sufficiently ground, the ash that is produced can be used as a cement replacement material in 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. India produces about 122 million tons of paddy every year.
Performance of rice husk ash in geopolymer concrete. Included are the results of laboratory research on hydrochloric acid attack, sulfate attack, alkalisilica. The monetary impact that the use of rha as a partial cement replacement can have if. Unprocessed rice husk ash as a partial replacement of cement. Effect of rice husk ash on fresh and hardened properties of. Rice husk ash classification and chemical composition. Founded in 1904 and headquartered in farmington hills, michigan, usa, the american concrete institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensusbased standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design. Assessment of optimal level of replacement for strength and permeability properties of concrete k. Contribution of rice husk ash to the properties of mortar and. Efficiency of rice husk ash as cementitious material in high. International journal of trend in scientific research and. Effect of rice husk ash on workability and strength of.
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. Objective of this work is to study the effects of rice husk ash as an admixture on workability, strength, durability of cement concrete and cement mortar. Rambabu et al 2015, shivaji barkale, uttaykalwane 2016 they has researched. The rice husk ash has good reactivity when used as a partial substitute for cement. 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. Mechanical behavior of concrete modified by replacement of. For all the cement replacement levels of rice husk ash.
The rice husk ash possesses a chemical composition similar to many of the organic fibers. Study on effect of natural and ground ricehusk ash concrete. The rice paddy milling industries give the byproduct rice husk. 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. Effect of rice husk ash on cement mortar and concrete. Rice husk ash as a partial replacement of cement in high. Professor 1,2,3 nims university shobhanagar, jaipur, rajasthan, india abstract impact of rice husk fiery debris on cement concrete is powder particles.
The properly rice husk ashes are found to be active within the cement paste. Cellulose c 5 h 10 o 5 lignin c 7 h 10 o 3 hemicellulose. In riceproducing countries rice husk asha material naturally high in silicacan be used as. Using rice husk ash as a cement replacement material in. Impact of rice husk ash on cement concrete project abstract. Based on the above, optimum dose of rha is determined to enhance the desired properties of concrete without causing any adverse result on other properties. Effect of rice husk ash on workability and strength of concrete. A series of unconfined compression tests on cement rhastabilized clay are conducted to investigate the influence of rha on the mixture properties. Compressive strengths of highstrength scc specimen with blended cements were observed to be higher by about 49% than the control specimen, for concrete with 50% portland cement blended with 50% rice husk ash. 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.
Efficiency of rice husk ash as cementitious material in. Rice husk ash center for vocational building technology. Thangavel b a department of civil engineering, alagappa chettiar college of engineering and technology, karaikudi 630004, india b concrete corrosion division, central electro chemical research institute, karaikudi. Characteristics of rice husk ash concrete workability. Generally, mineral admixtures have favorable influence on the strength and durability of concrete 4. Rice husk ash and pumice in lightweight concrete of.