A simple test method to characterize the shrinkage crack-resistance (SCR) of steam cured concrete is advanced. It includes the estimation of time of appearance of first crack on specimens and SCR coefficient as well as parameters of concrete stress state to this period. The SCR of steam cured conventional concrete and micro-concrete of two compositions with compressive strength of approximately 20 MPa was studied. It was observed that the conventional concrete had the highest SCR. The appearance of cracks on specimens from this type concrete was detected after 49 days of drying exposure. The micro-concrete, prepared from sand with a fineness modulus of 0·36, had the lowest SCR: the first crack on specimens appeared after 34 days of their drying. The tensile stress, free shrinkage, tensile strain capacity and SCR coefficient of concretes at the beginning of crack-generation were calculated.
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April 2001
Research Article|
April 01 2001
Effect of aggregate on shrinkage crackresistance of steam cured concrete
Constantin Freidin
Constantin Freidin
*
Department of Man in the Desert, Unit of Desert Architecture and Urban Panning, the J. Blaustein Institute for Desert Research, Ben-Gurion University of the Negev
Sede-Boker Campus, Israel, 84990
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Publisher: Emerald Publishing
Received:
February 09 2000
Revision Received:
October 25 2000
Accepted:
January 11 2001
Online ISSN: 1751-763X
Print ISSN: 0024-9831
© 2001 Thomas Telford Ltd
2001
Magazine of Concrete Research (2001) 53 (2): 85–89.
Article history
Received:
February 09 2000
Revision Received:
October 25 2000
Accepted:
January 11 2001
Citation
Freidin C (2001), "Effect of aggregate on shrinkage crackresistance of steam cured concrete". Magazine of Concrete Research, Vol. 53 No. 2 pp. 85–89, doi: https://doi.org/10.1680/macr.2001.53.2.85
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