Location
University of LEEDS
Event Website
https://tinyurl.com/ICDCS2018
Keywords
Strength, durability, geopolymer concrete, hybrid fibres
Abstract
This paper deals with an investigation on the influence of hybrid fibres on the strength and durability of binary blend geopolymer concrete. Geopolymer concrete was prepared using Fly ash and GGBS as source material and mix design was carried out as per the guidelines of Professor Rangan of Curtin University, Australia. Different fly ash-GGBS proportions namely 50-50%, 60-40%, 70-30%, 80-20% and 90-10% were considered. The tests on Geopolymer concrete reveal that the compressive strength increases as the percentage of GGBS increases up to 30%. Hence the combination of 70% fly ash and 30% GGBS was considered as a base material. In order to improve the engineering properties of the Geopolymer concrete, hybrid fibres which consist of metallic and non-metallic fibres were introduced in the base material. Metallic fibres considered was crimped steel fibres with different percentages of volume fraction viz. 0.5% and 1.0% and non-metallic fibres considered was basalt fibres with different percentages of volume fraction viz. 0.1%, 0.2% and 0.3%. Strength parameters such as compressive strength, split tensile strength, modulus of rupture and modulus of elasticity were obtained for various combinations of steel and basalt fibres. Similarly durability parameters which include permeability, water absorption, marine attack and sulphuric acid attack were also evaluated. The combination of fibres having 0.5% steel and 0.3% basalt gave better results with regard to both strength and durability of binary blend Geopolymer concrete.
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Included in
Strength and Durability of Hybrid Fibre Reinforced Binary Blend Geopolymer Concrete
University of LEEDS
This paper deals with an investigation on the influence of hybrid fibres on the strength and durability of binary blend geopolymer concrete. Geopolymer concrete was prepared using Fly ash and GGBS as source material and mix design was carried out as per the guidelines of Professor Rangan of Curtin University, Australia. Different fly ash-GGBS proportions namely 50-50%, 60-40%, 70-30%, 80-20% and 90-10% were considered. The tests on Geopolymer concrete reveal that the compressive strength increases as the percentage of GGBS increases up to 30%. Hence the combination of 70% fly ash and 30% GGBS was considered as a base material. In order to improve the engineering properties of the Geopolymer concrete, hybrid fibres which consist of metallic and non-metallic fibres were introduced in the base material. Metallic fibres considered was crimped steel fibres with different percentages of volume fraction viz. 0.5% and 1.0% and non-metallic fibres considered was basalt fibres with different percentages of volume fraction viz. 0.1%, 0.2% and 0.3%. Strength parameters such as compressive strength, split tensile strength, modulus of rupture and modulus of elasticity were obtained for various combinations of steel and basalt fibres. Similarly durability parameters which include permeability, water absorption, marine attack and sulphuric acid attack were also evaluated. The combination of fibres having 0.5% steel and 0.3% basalt gave better results with regard to both strength and durability of binary blend Geopolymer concrete.
https://docs.lib.purdue.edu/icdcs/2018/icc/8
