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Submitted on: 13 January 2003.
Revised on: 04 April 2003.
Accepted on: 02 June 2003.
___________________Journal of Advanced Concrete Technology
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Submitted on: 02 November 2008.
Revised on: 13 December 2008.
Accepted on: 26 December 2008.
___________________Journal of Advanced Concrete Technology
Submitted on: 01 November 2000.
Revised on: 07 December 2000.
Accepted on: 31 December 2000.
___________________Journal of Advanced Concrete Technology
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Submitted on: 11 May 2012.
Revised on: 17 July 2012.
Accepted on: 17 August 2012.
___________________Journal of Advanced Concrete Technology
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