Comparing and evaluating influence of nylon fiber and fly ash in self compacting concrete
1 College of Metropolitan Transportation, Beijing University of Technology, Pingleyuan, Chaoyang District Beijing, China
2 Faculty of Materials and Manufacturing, Beijing University of technology, No.100, Pingleyuan, Chaoyang District, Beijing, China.
Research Article
World Journal of Advanced Engineering Technology and Sciences, 2023, 08(01), 340–351.
Article DOI: 10.30574/wjaets.2023.8.1.0055
Publication history:
Received on 14 Feb 2023; revised on 19 February 2023; accepted on 22 February 2023
Abstract:
Self-consolidating concrete (SCC) is a special concrete that is highly flow able, non-segregating and self-expanding. Self-compacted concrete (SCC) is poured into the formwork without compaction and fills the formwork by its own weight. SCC is considered to have many advantages. Compared with conventional concrete as improved Construction quality, faster construction activity, lower cost etc. This project was carried out to evaluate the effects of addition of nylon fiber and fly ash on the fresh and hardened properties of SCC mixes. In this project, concrete mixes with nylon fiber of 0.5%, 1.5%, 2.5%, and fly ash with 0%, 15%, 30% and 45% were used to determine its permeability, flow Capacity, evaluated on the basis of and separation resistance, slump flow, L-box and V-funnel tests. After 3 days, 14 days, 28 days of curing SCC cylinders, compressive and splitting tensile strength were tested. The test results show that nylon fibers increase permeability but decrease the filling capacity and segregation resistance of SCC. Furthermore, it can be concluded that after 3 days, 14 days, 28 days of curing, the test of concrete samples showed that the addition of nylon fiber up to 2.0% of cement by volume increased the compressive strength of SCC. Strength, improves tensile strength but 2.5%. Nylon fiber reduces the compressive strength, tensile strength of hardened SCC.
Keywords:
Aggregates; Nylon fiber; Fly ash; Self compacting concrete; Compressive and tensile strength
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