The effect of shrinkage reducing admixture and polypropylene fibers on drying shrinkage behaviour of concrete


MARDANI AGHABAGLOU A., Ilhan M., Ozen S.

CEMENT WAPNO BETON, vol.24, no.3, pp.227-238, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 3
  • Publication Date: 2019
  • Journal Name: CEMENT WAPNO BETON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.227-238
  • Keywords: drying shrinkage behavior of concrete, shrinkage reducing admixture, polypropylene fiber, permeability, MECHANICAL-PROPERTIES, FLEXURAL BEHAVIORS, CRACKING
  • Bursa Uludag University Affiliated: Yes

Abstract

The paper presents comparative studies on the impact of polypropylene fibers and commercial shrinkage reducing admixture on the drying shrinkage, water absorption, as well as compressive strength of concrete. Concretes with a constant cement content, water/cement ratio and consistency with the addition of admixture and fibers tested separately as well as introduced together were tested. The obtained results showed that the addition of fibers increases the need for a superplasticizing admixture in order to obtain the assumed consistency. The use of shrinkage reducing admixture and polypropylene fibers has a positive effect on the compressive strength and the permeability of concrete. Both the shrinkage reducing admixture as well as the fibers have reduced the drying shrinkage of the concrete. The impact of fibers on shrinkage was greater than the impact of the admixture. Regarding the drying shrinkage, the experimental results showed that the simultaneous addition of shrinkage reducing admixture and polypropylene fibers did not show a beneficial effect, on the contrary, it only caused an increase in costs.