International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | June 2023
p-ISSN: 2395-0072
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PARTIAL REPLACEMENT OF FINE AGGREGATE IN FIBRE REINFORCED CONCRETE WITH WATER TREATMENT SLUDGE AND GRAPE EXTRACT AS ADMIXTURE Akshara P, Rakendu MV, Aswin A, Riza Parvin, Adithyan V, Dhanya Raveendran 1,2,3,4,5 Students, Department of Civil Engineering, Government College of Engineering Kannur,
Kerala, India Department of Civil Engineering, Government College of Engineering Kannur, Kerala, India ---------------------------------------------------------------------***--------------------------------------------------------------------Increase in amount of sludge rises a problem of to a Abstract -Coagulation, flocculation, sedimentation, and 6Assistant Professor,
particular limit. It is a sustainable solution, to use sludge in the production of concrete for various purposes. But addition of sludge seemed to be decreasing the strength of concrete due to the presence of organic content and also due to porous interfacial transition zone between cement matrix and sludge particles. Hence it is important to improve the properties of concrete using some methods. Use of natural admixtures have positive impacts on the quality of concrete compared to other chemical or mineral admixtures.
filtering techniques are frequently used in surface water treatment to remove colloidal and suspended particulates from raw water before it is made potable. During the process of purifying raw water, all water treatment facilities produce waste/residue known as water treatment sludge. It can be used in manufacturing low-strength concrete blocks for applications in construction. Drinking water treatment sludge is collected from Kerala Water Authority Water treatment plant and is dried. The dried sludge is tested for its components. Steel fibre reinforced concrete cubes are casted with partial replacement of fine aggregates with drinking water sludge and the compressive and tensile strengths are determined. For improving the strength and quality of the prepared concrete mix, natural admixture like grape extract is used. Usage of natural admixture helps in reduction of cost and producing environmental-friendly construction material.
Key Words:
2. MATERIALS USED 2.1 Cement Ordinary Portland cement of 53 grade was selected for the investigation. It was powdery, dry and free of lumps. All possible contact with moisture was avoided while storing cement. The specific gravity of cement is 3.11, fineness of cement is 7%, consistency is 32%. The initial setting time is found to be 190 minutes.
Water treatment sludge, Steel fibre,
Grape extract
1. INTRODUCTION
2.2 Coarse aggregates
Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures over time. It is a material that is widely used in building and is produced by combining aggregate, cement, small stones, sand, and water. Together, all the elements form a substance that is similar to stone. Concrete's strength and quality can be changed by appropriately changing the materials that make up the concrete, such as the binders, aggregates, water, etc. Fibre reinforced concrete is a composite material with concrete and fibres, which strengthens its structural stability. It comprises blends of appropriate fibres that are discrete, uniformly scattered, cement, mortar, or concrete. Fibres are typically utilized in concrete to prevent cracking brought on by drying and shrinking of plastic. Additionally, they lessen the permeability of concrete, which in turn lessens bleeding of water.
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The 20 mm and 12 mm coarse aggregates were taken in the proportion of 43% and 57%, respectively. Fineness modulus was found using sieve analysis. According to IS 2386 (1963), the specific gravity, bulk density, porosity, void ratio and water absorption is determined and found to be within the range. The Crushing value is 21.35%. 2.3 Crushed sand Crushed sand passing 4.75mm IS sieve is used for the investigation. The specific gravity is 2.68. From particle size distribution curve it falls under Zone II. The maximum bulking of sand is 25.3% at 6% moisture content. 2.4 Water treatment Sludge The drinking water treatment sludge after backwashing is collected from Kerala Water Authority Water Treatment Plant, Peruvalathuparamba. The specific gravity is 2.2. It is
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