Effect of recycled aggregate and flyash on glass fiber reinforced concrete

The main purpose of this study was to evaluate fresh properties and mechanical characteristics of Glass fiber reinforced concrete (GR) containing Recycled aggregate and Fly Ash. It was utilized to replace Ordinary Portland Cement material at different percentages of 5, 10, 15, 20, and 25%. Glass fib...

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Bibliographic Details
Published in:Materials today : proceedings 2021, Vol.47, p.7105-7110
Main Authors: Mahakavi, P., Chithra, R., Gogoi, Ripunjoy, Divyah, N.
Format: Article
Language:English
Subjects:
Durability properties
Flyash
Glass fibers
Mechanical strength
Microscopic analysis
Recycled aggregate
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Summary:The main purpose of this study was to evaluate fresh properties and mechanical characteristics of Glass fiber reinforced concrete (GR) containing Recycled aggregate and Fly Ash. It was utilized to replace Ordinary Portland Cement material at different percentages of 5, 10, 15, 20, and 25%. Glass fibers (6 mm length) have been incorporated in two different volume fractions of 0.5 and 1%. Experimental results proved that the addition of flyash in concrete mixes decreased compressive strength test results at early ages; on the other hand, strength increased at later ages with reference mixes. The replacement of flyash also showed decreased sorptivity, water absorption value, and increased acid resistance compared to control mixes. incorporation of glass fiber improved compressive strength test results of GR; however, fiber inclusion decreased fresh properties of GR mixes. Besides, Scanning Electronic Microscopic analysis studies of GR with optimum fiber content and flyash recommended development of C-S-H gel and cementitious compounds as an effect of reaction between flyash, recycled aggregate, and cement. experimental results showed that utilization of concrete prepared with flyash and recycled aggregate is more suitable for sustainable construction & green concrete block production industry beyond economic benefits.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2021.06.222