INFLUENCE OF HYBRID FIBRES ON THE MECHANICAL CHARACTERIZATION OF LOW CALCIUM GEOPOLYMER CONCRETE

Kadarkarai Arunkumar；Muthiah Muthukannan；Arunachalam Suresh Kumar；Arunasankar Chithambar Ganesh；Rangaswamy Kanniga Devi

low calcium geopolymer concrete ； low calcium wood ash ； polypropylene fibre ； rubber fibre ； hybrid fibres

技術學刊

37卷4期（2022 / 12 / 01）

225 - 235

英文

Geopolymers are an amorphous polymer shape that lowers emissions of greenhouse gases and is also the best option for cement in construction. Compared to traditional cement concrete, geopolymers demonstrated lower energy absorption, ductility, impact energy, and brittleness. Fibres with various properties and the ability to improve the behaviour of geopolymer concrete in all aspects can be included to strengthen the aforementioned features of geopolymer concrete. This investigation added polypropylene fibre and rubber to a weight fraction of 0, 0.5, 1, 1.5, and 2 per cent. In addition, the mechanical behaviour of low calcium geopolymer has been investigated for the impacts of polypropylene and rubber fibre hybridization. In this study, the mechanical properties such as compressive strength, tensile strength, flexural strength of hybrid fibre reinforced low calcium geopolymer concrete have also been investigated. The results showed that the hybridization of 0.5 % of PP fibre and 0.5% of rubber fibre increased the compressive strength, tensile strength, flexural strength by 23.9%, 15.2%, and 13%.

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