The effect of using saturated lightweight aggregate on shrinkage and hydration degree of high performance concrete

DAVRAZ M., GÜNDÜZ L.

Science and Engineering of Composite Materials, vol.16, no.4, pp.225-234, 2009 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 16 Issue: 4
  • Publication Date: 2009
  • Journal Name: Science and Engineering of Composite Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.225-234
  • Keywords: Autogenous shrinkage, Compressive strength, Degree of hydration, Saturated lightweight aggregate
  • Isparta University of Applied Sciences Affiliated: No

Abstract

Deformations named as autogenous (chemical + autogenous) shrinkage related to parameters of cement dosage, water/cement ratio etc. in high performance concretes are studied. Prevention of autogenous shrinkage with outer water curing is not possible. In this research, the effects of three different lightweight aggregate types used as internal water reservoir in high performance concrete were analyzed on shrinkage, hydration degree and strength properties in different curing media. The research findings show that -1/+2 mm saturated lightweight aggregates in concrete samples of 40% relative humidity medium reduce the autogenous shrinkage, improve the hydration degree and increase the compressive strength.