Fracture Parameters of Fly Ash and GGBS Based Geopolymer Concrete

Tippabhotla D. Gunneswara Rao; P. Alfrite; G. Mallikarjuna Rao; Mudimby Andal

doi:10.4028/www.scientific.net/AMM.764-765.1090

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 764-765Fracture Parameters of Fly Ash and GGBS Based...

Fracture Parameters of Fly Ash and GGBS Based Geopolymer Concrete

Abstract:

Geopolymer concrete (GPC) is a new construction material in which cement is totally replaced by calcined source materials fly ash and GGBS. Geopolymer utilization reduces or eliminates the use of cement whose production produces a lot of carbon dioxide. Usually fly ash as a source material for the geopolymer. The behavior of GPC has to be studied in detail to check its suitability in construction industry. In the present study, the fracture behavior of geopolymer concrete is investigated and compared. Three-point bending test on notched prisms with a/d (notch depth/beam depth) ratios 0.1, 0.15, 0.2 are considered. The values of Critical load, fracture toughness, fracture energy and ductility are presented. The test results of total of 27prisms, 6cubes, 18 cylinders with M30 grade geopolymer concrete and conventional concrete (OPC) of same grade are presented in this paper. The test results indicated that the characteristic length of GPC is about 25% more than that of conventional concrete.

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Periodical:

Applied Mechanics and Materials (Volumes 764-765)

Pages:

1090-1094

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.764-765.1090

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Online since:

May 2015

Authors:

Tippabhotla D. Gunneswara Rao*, P. Alfrite, G. Mallikarjuna Rao, Mudimby Andal

Keywords:

Fracture Energy, Fracture Parameters, Fracture Toughness, Geo-Polymer Concrete, Stress Intensity Factor

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