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Optimum mix design of concrete made with dune sand as fine aggregate

conference contribution
posted on 2012-11-14, 00:00 authored by F Luo, Z Pan, W H Duan, X L Zhao, Frank CollinsFrank Collins
The use of dune sand for replacing ordinary fine aggregate in concrete has environmental benefits and the feasibility has been demonstrated in China and some Middle East countries. However, the use of dune sand tends to decrease the engineering properties (compressive strength and workability) of concrete. To improve engineering properties of dune sand concrete (DSC), the current paper is to check which strength and
slump levels can be obtained by optimization of mix proportions. Results show that the ratio of cement to sand (C/S) has significant influence on the engineering properties of DSC. At low C/S ratio, the engineering
properties of DSC are inferior to those of concretes made with normal sand (NSC). However, when C/S ratio exceeds 0.75, DSC has comparable or even better engineering properties compared to NSC. In the range of
investigated C/S ratio, DSC has comparable tensile splitting strength and elastic modulus to its reference NSC.
Based on the experimental results, the Australia dune sand can be used as fine aggregate whenever mix proportions are properly controlled.

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

233 - 240

Publisher

ACUN-6 Monash University

Location

Melbourne, Australia

Place of publication

Clayton, Vic.

Start date

2012-11-14

End date

2012-11-16

ISBN-13

978-0-646-58589-5

Language

eng

Publication classification

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

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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