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Strain rate effects for strength of geopolymer concrete

conference contribution
posted on 2012-11-14, 00:00 authored by K N Feng, Z Pan, D Ruan, Frank CollinsFrank Collins, Y Bai, W H Duan
The effects of strain rate on compressive and tensile strength of fly ash based geopolymer concrete were investigated experimentally. Four mixes of geopolymer concrete using different alkaline solutions and under vary curing conditions were prepared. One mix of ordinary Portland cement (OPC) concrete was prepared for comparison. Both Quasi-Static tests using standard MTS and dynamic tests using Split-Hopkinson pressures bar (SHPB) were conducted, which were giving varying strain rate loadings from 10‾⁷ to 103 per second. The strain rate effect is presented as the ratio of dynamic compressive strength to static compressive strength (DIF). Results show that DIFs of geopolymer concrete are generally higher than those of OPC concrete at strain range of 187/s to 346/s (compression tests) and 7/s to 13/s (splitting tensile tests), respectively. This tendency is independent on loading regimes (compression or tension). This suggests that geopolymer concrete can be used as an alternative construction material to OPC concrete for the structures which has a high risk of being subjected to impact loadings.

History

Event

ACUN-6 Composites and Nanocomposites in Civil, Offshore and Mining Infrastructure. International Composites Conference (6th : 2012 : Melbourne, Victoria)

Series

ACUN International Composites Conference

Pagination

405 - 410

Publisher

ACUN-6 Monash University

Location

Melbourne, Victoria

Place of publication

Melbourne, Vic.

Start date

2012-11-14

End date

2012-11-16

ISBN-13

978-0-646-58589-5

Language

eng

Publication classification

E Conference publication; E1.1 Full written paper - refereed

Copyright notice

2012, ACUN-6 Monash University

Editor/Contributor(s)

Y Bai, S Bandyopadhyay, X Zhao, R Singh, S Rizkalla

Title of proceedings

ACUN-6 2012 : Proceedings of the 6th International Composites Conference on Composites and Nanocomposites in Civil, Offshore and Mining Infrastructure

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