Assessing the recycling potential of glass fibre reinforced plastic waste in concrete and cement composites |
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| Authors: | P Asokan M Osmani ADF Price |
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| Institution: | 1. Department of Civil and Building Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK;1. Department of Civil Engineering, Faculty of Engineering, Marwadi Education Foundation’s Group of Institutions, Rajkot 360005, Gujarat, India;2. L.E. College of Engineering, Morbi, Gujarat, India;1. School of Engineering, Polytechnic of Porto, Rua Dr. António Bernardino de Almeida, 431, 4200-072 Porto, Portugal;2. INESC-ID, Instituto Superior Técnico, Technical University of Lisbon, Rua Alves Redol, 9, 1000-029 Lisboa, Portugal;3. Faculty of Engineering of University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;1. FEUP – Faculty of Engineering of University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;2. School of Engineering, Polytechnic of Porto, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal;1. ISISE, Department of Civil Engineering, Minho University, Campus de Azurem, Guimaraes, 4800-058, Portugal;2. Department of Engineering, Lorestan University, Khorramabad, Iran;3. Faculty of Civil Engineering, Semnan University, Semnan, Iran |
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| Abstract: | At present glass fibre reinforced plastic (GRP) waste recycling worldwide is very limited due to its intrinsic thermoset properties, lack of characterisation data and non availability of viable recycling and recovery routes. In the present study, efforts were made to recycle GRP waste powder and fibre in concrete and cement composites and assess its quality to comply with the British standards for use in construction applications. Results revealed that the mean compressive strength of concrete composites using 5%–50% GRP waste powder under water curing varied from 37 N/mm2 to 19 N/mm2. Increase in the concentration of GRP waste decreased the compressive strength. However, increase in curing duration (14–180 days) resulted in improving the compressive strength of concrete with 5% GRP application to 45.75 N/mm2. Moreover, the density of concrete with 50% GRP waste was reduced by about 12% as compared to the control sample. The bending strength in terms of modules of rupture (MOR) of 12 mm thickness cement composites developed using 5% GRP waste fibre attained 16.5 N/mm2. The findings of this work pave the way for further GRP waste recycling in precast construction products for use in various applications. |
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