Influence of Aggregate Restraint on Volume Changes: Experiments and Modelling

Aggregates in cementitious composites restrain the volume changes of the matrix, which reduces the overall shrinkage of the composite and may lead to internal microcracking. In this paper, autogenous shrinkage of cement pastes and mortars with different amounts of aggregates was measured. While in the case of thermal deformations it is possible to estimate the volume changes of the composites with reasonable accuracy using effective medium approaches, predictions of early-age shrinkage tend to be less accurate, possibly because it is difficult to fully take into account the viscoelastic behavior of the cement paste, which is particularly pronounced at early ages.

• Record URL:
  https://doi.org/10.1061/9780784479346.003
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784479346
• Supplemental Notes:
  • © 2015 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Lura, P
  • Wyrzykowski, M
• Conference:
  • 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures
  • Location: Vienna , Austria
  • Date: 2015-9-21 to 2015-9-23
• Publication Date: 2015-9

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 17-23
• Monograph Title: CONCREEP 10: Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures

Subject/Index Terms

• TRT Terms: Aggregates; Cement; Cement mortars; Mechanics; Microcracking; Shrinkage; Viscoelasticity; Volume changes
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01576545
• Record Type: Publication
• ISBN: 9780784479346
• Files: TRIS, ASCE
• Created Date: Sep 25 2015 4:20PM