Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/197337

Title

Factors contributing to early age shrinkage cracking of slag concretes subjected to 7-days moist curing

Author(s)

Aly, Tarek;  Sanjayan, Jay G.

Abstract

The objective of this study was to investigate all the factors contributing to early age shrinkage cracking in concrete, namely, shrinkage, tensile creep, tensile elastic modulus, tensile strength of concretes, and to study the effect of slag as a binder on these factors. The above-mentioned factors were measured in early age concretes made with 0, 35, 50 and 65% level replacement of ordinary Portland cement by slag. All the concretes studied were moist cured for 7-days. It was found that, at lower slag replacement levels (0, 35 and 50%), the tensile strength decreased with increasing slag replacement. However, this is more than compensated by decreasing tensile elastic modulus and shrinkage. There was no significant change found in tensile creep with the changing slag levels. The study shows that the influence of the tensile elastic modulus is a major consideration for early age cracking of slag concretes.

Publication type

Journal article

Source

Materials and Structures, Vol. 41, no. 4 (May 2008), pp. 633-642

Publication year

2008

FOR Code(s)

0905 Civil Engineering

Keyword(s)

Concretes;  Crack initiation;  Cracking;  Curing;  Early age;  Elastic moduli;  Shrinkage;  Slag;  Slag cement;  Slag concretes;  Tensile creep

Publisher

Springer

ISSN

1359-5997

Publisher URL

http://dx.doi.org/10.1617/s11527-007-9269-2

Copyright

Copyright © 2007 RILEM has copyright.

Peer reviewed