Splitting behavior of polyvinyl alcohol fiber reinforced iron ore tailings concrete
Case Studies in Construction Materials, ISSN: 2214-5095, Vol: 21, Page: e03839
2024
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New Construction Materials Research Study Results Reported from University of Jinan (Splitting Behavior of Polyvinyl Alcohol Fiber Reinforced Iron Ore Tailings Concrete)
2024 DEC 03 (NewsRx) -- By a News Reporter-Staff News Editor at Daily Real Estate News -- A new study on Engineering - Construction Materials
Article Description
To promote solid waste reutilization and reduce natural river sand consumption, iron ore tailings (IOT) are expected to be used in concrete production as a potential substitute for river sand under the premise of comparable material properties with ordinary concrete. In this study an IOT concrete reinforced by Polyvinyl Alcohol (PVA) fiber has been proposed and the slump and splitting behavior under various IOT substitution rates and PVA fiber contents has been experimentally investigated. Slump tests reveal that the optimal PVA fiber content is 0.1 % and IOT substitution rate is 60 % from the view of workability. Splitting tensile tests show a monotonous strength growth with PVA fiber content increase. The incorporation of IOT has increased concrete splitting tensile strength but the strength is smaller than that of normal concrete as soon as IOT substitution rates exceed 50 %. A regression model and Back Propagation (BP) neural network model have been adopted to establish splitting tensile strength prediction model. Compared to regression model, the BP model has exhibited better accuracy which is suitable to predict the splitting tensile strength of PVA-IOT concrete with PVA content less than 0.3 %.
Bibliographic Details
Elsevier BV
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