An Examination and Investigation Compressive Strength the Use of Waste Paper Sludge Ash and Rice Husk Ash as Cement Substitutes in Concrete (original) (raw)
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International Journal for Research in Applied Science and Engineering Technology, 2018
Concrete and cement motar are widely used now a days by construction industry. Keeping the environment in mind we have to manage the waste (industrial waste), but if these industrial waste are incorporated with cement concrete it not only increase the strength of concrete but also can decrease the cement content. In this research waste rice husk ash and waste paper sludge is used. The paper sludge production is a by product of paper making in the paper mill and rick husk is obtained from the processing of rice. By adding these components into the cement it increases the strength, flexural and compressive strength of concrete. The rice husk ash (RHA) and waste paper sludge were added to the concrete at varying percentages (15%, 10%) and (15%, 20%).
Effectiveness of Use of Rice Husk Ash as Partial Replacement of Cement in Concrete
India is a major rice producing country, and the husk generated during milling is mostly used as a fuel in the boilers for processing paddy and producing energy through direct combustion. About 21 million tones of Rice Husk Ash (RHA) is produced annually. This RHA is regarded as a waste and has disposal problem because of the fact that it consumes a vast area for dumping. Lots of ways are being thought of for disposing them by making commercial use of this RHA. RHA can be used as a replacement for concrete (5 to 15%).This paper evaluates how different contents of Rice Husk Ash added to concrete may influence its properties. In this study, cement was replaced by waste RHA as 5%,10% and 15% by weight for M-25 mix. The concrete specimens were tested for compressive strength, durability (water absorption) and density at 28 days of age and the results obtained were compared with those of normal concrete. The results concluded the permissibility of using waste RHA as partial replacement of cement up to 10% by weight of cement
Study of Concrete Involving Use of Waste Paper Sludge Ash As Partial Replacement of Cement
Cement manufacturing industry is one of the carbon dioxide emitting sources besides deforestation and burning of fossil fuels and concrete industry is one of the largest consumers of natural virgin materials. The global cement industry contributes about 7% of greenhouse gas emission to the earth's atmosphere. In order to address environmental effects associated with cement manufacturing and constantly depleting natural resources, there is a need to develop alternative binders to make concrete industry sustainable. This work examines the possibility of using waste paper sludge ash as partial replacement of cement for new concrete. In this study waste paper sludge ash was partially replaced as 5%, 10%, 15% and 20% in place of cement in concrete for M-25 mix and tested for its compressive strength, tensile strength, water absorption and dry density up to 28 days of age and compared with conventional concrete. From the results obtained, it is found that Waste Paper Sludge Ash can be used as cement replacement up to 5% by weight and particle size less than 90µm to prevent decrease in workability. Further waste paper sludge has very high calorific value and could be used as a fuel before using its ash as partial cement replacement.
In this developing era concrete and cement mortar are widely used by the construction industry ,with this development .Large amount of industrial wastes are generated and if these wastes are not properly used it will create severe problems ,keeping the environment in mind, concrete engineers are trying to find some alternative materials which will not only replaces the cement content but also improves the strength of concrete. In this research work the Rice Husk Ash and waste Paper Sludge are used .The paper sludge which is the by product collected from paper mill and rice husk ash obtained from the rice processing units ,by adding these two products with concrete ,not only replaces the cement content but also increases the strength of concrete like compressive, flexural & split tensile strength etc .These two materials RSH & WPSA were incorporated with concrete with varying percentages of 2%,4%,8%, & 10% .The proper codal precautions were followed during the manufacturing the concrete cubes of 150 X 150 X 150mm and cylinders of size 150 mm X 300 mm casted with varying percentages of RHA & WPSA. The total number of specimen which were prepared 78 cubes and cylinders were casted with proper curing and the series of tests were conducted on these specimens like Split tensile ,Flexural ,Compressive strength ,Normal consistency test etc .
Recent trend of technology is towards waste utilization and cost reduction in construction industries. In today’s construction industry concrete is major and versatile building material and in concrete, cement is the most expensive material and to reduce its cost Agricultural waste is introduced in concrete. Rice Husk Ash (RHA), Wheat Straw Ash (WSA) and Saw Dust Ash (Ash) is introduced as a partial replacement of concrete. Rice Husk Ash (RHA), Wheat Straw Ash (WSA) and Saw Dust Ash (Ash) is replaced by cement upto 30% in concrete and their comparative is study is done on basis of their compressive strength and workability
International Journal of Engineering Research and Technology (IJERT), 2013
https://www.ijert.org/the-effect-of-rice-husk-ash-and-fly-ash-used-as-supplementary-cementing-material-on-strength-of-mortar-and-concrete https://www.ijert.org/research/the-effect-of-rice-husk-ash-and-fly-ash-used-as-supplementary-cementing-material-on-strength-of-mortar-and-concrete-IJERTV2IS120984.pdf To meet out the rapid infrastructure development a huge quantity of concrete is required. Unfortunately, India is not self sufficient in the production of cement, the main ingredient of concrete and the demand exceeds the supply and makes the construction activities very costlier. Hence, currently, the entire construction industry is in search of a suitable and effective waste product that would considerably minimize the use of cement and ultimately reduce the construction cost. In the last decades, the use of residue in civil construction, specially in addition to concrete, has been subject of many researches due to, besides to reduce the environmental polluters factors, it may lead several improvements of the concrete properties. Few of such products have already been identified like Rice Husk Ash (RHA), Fly Ash, Silica Fumes, Egg shell etc. Amongst these RHA and Fly Ash are known to have good prospects in minimizing the usage of cement. India produces about 122 million tons of paddy every year. About 20-22% rice husk is generated from paddy and 20-25% of the total husk becomes as "RICE HUSK ASH" after burning. Each ton of paddy produces about 40 Kg of rice husk ash. This paper evaluates how different proportions of rice husk ash (RHA) and fly ash (FA) added to concrete may influence its physical and mechanical properties. Samples with dimensions of 150 X 150 mm were tested, with 0%, 10%, 20%, 22.5% and 25% of cement is replaced by total mass of waste (RHA+FA). Properties like compressive strength were evaluated. The results were compared with control sample and the viability of adding RHA & FA to concrete was investigated. It has been observed that replacement of 20% cement by waste product was found to increase in compressive strength of concrete. KEYWORD Rice husk ash, Fly ash, pozzolanic material, compressive strength.
Effect of Rice Husk Ash on Compressive Strength of Concrete
International Journal of Structural and Civil Engineering Research
Over the past decades concrete technology has entered the broad areas of research to enhance the properties and performance of concrete. Moreover there is the introduction of the new types of concrete such as selfcompacting concrete (SCC), high strength concrete (HSC) or ultra-high strength concrete (UHSC). Now these types of concrete are being widely used in the world and they require the high cement binder. So high cement content means high loss to environment as in the manufacturing of one tonne of cement, about 1 tonne of CO2 is emitted. So it is necessary to reduce usage of cement by introducing new supplementary cementitious materials which are the byproducts of industries to reduce debris. Rice Husk Ash is one of these. The potential of rice husk ash as a cement replacement or addition material is well established. A review of literature urges the need for optimizing the replacement level or additionof RHA in concrete for improved compressive strength at optimum water binder ratio. This paper discusses the improved compressive strength of RHA-High strength concrete at optimized conditions.
UTILIZATION OF RICE HUSK ASH AS PARTIAL REPLACEMENT FOR CEMENT IN CONCRETE
Strong Material is a key factor in measuring strength of a Structure. The fact that India is a developing nation having Mega structure and line up in the strongest nations of the world. For strong structure strength of material used should be high enough. What if the concrete used is having a high strength and we are also able to save the material and make it Eco Friendly? That's the better idea to make the structure Ecofriendly and also the use of material is less. The main objective of the project is to expedite the improvement of infrastructure with the help of High-Performance Concrete. The project has one of the major advantages that we can use the waste material produced during farming and use that thing in the improvement of strength of material and use it in the construction part of mega structures. This Project addresses the potential use of Rice Husk Ash (RHA) as a cementitious material in concrete mixes. RHA is produced from the burning of rice husk which is a by-product of rice milling. The ash content is about 18-22% by weight of the rice husks. Research has shown that concrete made with RHA as a partial cement substitute to levels of 5%, 10%, 15% and 20% by weight of cement has superior performance characteristics compared to normal concrete. Also, the use of RHA would result in a reduction of the cost of concrete construction, and the reduction of the environmental greenhouse effects. Concerns and the requirement to conserve energy and resources, efforts have been made to burn the husk at a controlled temperature and atmosphere, and to utilize the ash so produced as a supplementary cementing material 2. MATERIALS USED 2.1 Rice Husk Ash (RHA) The ash collected was sieved through BS standard sieve size 75µm and its color was grey. 2.2 Cement Ordinary Portland cement (OPC) of 53 grade was used in which the composition and properties is in compliance with the Indian standard organization. 2.3 Water Water plays an important role in concrete production (mix) in that it starts the reaction between the cement, pozzolan and the aggregates. It helps in the hydration of the mix. In this research, the water used was distilled water.
Effect of Rice Husk Ash (RHA) on Physical Property and Mechanical Strength of Concrete
Advanced Materials Research, 2015
Fast depleting natural resources, huge consumption of energy, and environmental hazards involved in the production of cement has inspired researchers to find partial replacement of cement using other or similar materials. Rice husk ash (RHA), an agricultural waste, is classified as “a highly active pozzolan” because it contains a very high amount of amorphous silica and a large surface area. Rice husk is natural fiber that has the advantages of low density, low cost and biodegradable. In Malaysia paddy is grown locally especially in northern states of Peninsular Malaysia. Rice husk is a by-product of paddy being process into rice. These make it a natural candidate for cement replacement agent especially in Paddy producing countries. In this paper, RHA was introduced as the micro filler in concrete mixtures. The replacement of RHA which is lighter as compared to the Ordinary Portland Cement results in decreasing density of cement fiber composite and less permeable concrete.