Volume 7 Issue 3 September - November 2018
Research Paper
Mechanical Properties of Fibre Reinforced Alkali- Activated Concrete
Sonal Thakkar*, Urmil Dave**, Kush Shah***
* Research Scholar & Assistant Professor, Department of Civil Engineering, Institute of Technology, Nirma University, Gujarat, India.
** Professor, Department of Civil Engineering, Institute of Technology, Nirma University, Gujarat, India.
*** Post-graduate, Department of Civil Engineering, Institute of Technology, Nirma University, Gujarat, India.
Thakkar, S., Dave, U., & Shah, K. (2018). Mechanical Properties of Fibre Reinforced Alkali- Activated Concrete, i-manager's Journal on Structural Engineering, 7(3), 42-50. https://doi.org/10.26634/jste.7.3.13988
Abstract
In the modern era, where sustainable concrete is a buzzword, all efforts are made to find a substituteof cement. Fly ash basedalkali-activated concreteis one of sustainable solutions in place of Ordinary Portland Cement concrete. This concrete uses industrial waste as one of the constituents in the concrete and thus offers sustainable solution to waste disposal and also has a very high early strength. The present investigation has studied the effect of polypropylene fibresinalkali-activated concrete. To understand the behaviour of fibre reinforced alkali-activated concrete, mechanical properties like compressive strength, flexural strength, split tensile strength, modulus of elasticity, and bond strength were investigated. Comparison of these results was carried out with fibre reinforced ordinary Portland cement concrete to evaluate the behaviour of fibre reinforced alkali-activated concrete. It was observed that with the addition of polypropylene fibres, 7 days strength in compression increased by 72%, in flexure by 35%, in modulus of elasticity by 42%, and in bond by 10% compared to Ordinary Portland Cement concrete with fibres. Thus, for high early strength alkali-activated concrete with polypropylene fibre becomes more suitable.
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