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ISSN 2063-5346
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MICROSTRUCTURAL CHARACTERISTICS AND CHEMICAL RESISTANCE OF CEMENT CONCRETE MADE USING SILICA FUME AND CERAMIC WASTE AS COARSE AGGREGATE

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P.Jayaraj, D.Gopinath
» doi: 10.48047/ecb/2023.12.7.329

Abstract

The most effective way to reduce the demand for natural resources in the manufacturing of concrete is to completely substitute traditional concrete ingredients with M-sand and electrical insulator ceramic waste aggregate (0 to 100) percent and cement replaced by silica fume (0, 5, 10, 15). The use of ceramic waste aggregate and silica fume could contribute to a more compact and dense concrete microstructure, which enhances the concrete resistance to the ingress of aggressive substances. The overall service life of concrete structures can be improved by incorporating ceramic waste aggregates, making methods of building more sustainable and economical with good resistance to chemical attacks such as alkaline resistance and Chloride penetration, Acid attack test HCI and microstructural properties. A more compact and stable ITZ can reduce the permeability of the concrete, which is essential for its durability. Lower permeability means reduced ingress of harmful substances like water, chlorides, and other aggressive agents, enhancing the concrete's resistance to chemical attacks and reinforcing its long-term durability. The test result showed that the morphology in comparison to natural aggregate-paste, the Silica fume with Ceramic waste aggregate-paste has a more compact and stable microstructure at the interfacial transition zone (ITZ).

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