The effect of pre-setting pressure applied flexural strength and fracture toughness of reactive powder concrete during the setting phase

Ipek M., Yilmaz K., Uysal M.

CONSTRUCTION AND BUILDING MATERIALS, vol.26, no.1, pp.459-465, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1016/j.conbuildmat.2011.06.045
  • Journal Name: CONSTRUCTION AND BUILDING MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.459-465
  • Keywords: Reactive powder concrete, Pre-setting pressure, Fibre, Flexural strength, Toughness, MECHANICAL-PROPERTIES, MINERAL ADMIXTURES, SILICA FUME
  • Yıldız Technical University Affiliated: No

Abstract

In this study, the effect of pre-setting pressure on reactive powder concrete (RPC) was examined. The fresh (plastic) concrete samples were filled in a specified beam mould and six different pre-setting pressure values (control-without pressure, 5, 10, 15, 20, 25 MPa) were applied. Flexural strength was improved by 34% with very low amounts (5 MPa) of pre-setting pressure. Also, toughness was increased more than thrice. In this study, the maximum flexural strength of 36.4 MPa and toughness of 116.960 N m were obtained under 25 MPa pre-setting pressure. Volume of sample was decreased 7.9% by pre-setting pressure. (C) 2011 Elsevier Ltd. All rights reserved.