Shrinkage and creep performance of recycled aggregate concrete

Jacob Henschen, Atsushi Teramoto, David A Lange

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

With the growing emphasis on sustainability in the concrete industry, there has been a renewed interest in the use of recycled concrete as aggregate in new concrete. Recycled aggregate concrete is not a new concept, but it is normally met with resistance due to reduction in strength and an increase in drying shrinkage. The organizations that allow for recycled concrete aggregates in concrete give few guidelines. One of the common requirements is that the recycled aggregates should be soaked prior to use. The goal of this study was to investigate how the initial moisture state of the aggregates affect the creep and shrinkage properties. Tests included free shrinkage of prisms, restrained shrinkage ring tests and an actively restrained tensile creep test. By using the recycled concrete aggregate at or near SSD conditions, the mixtures were workable and had lower free shrinkage. The recycled aggregate mixes did have higher tensile creep but this is not detrimental in paving applications where it would work to prevent shrinkage cracking.

Original languageEnglish (US)
Title of host publication"7th RILEM International Conference on Cracking in Pavements
Subtitle of host publicationMechanisms, Modeling, Testing, Detection,Prevention and Case Histories
PublisherKluwer Academic Publishers
Pages1333-1340
Number of pages8
ISBN (Print)9789400745650
StatePublished - Jan 1 2012

Publication series

NameRILEM Bookseries
Volume4
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials

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