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Restrained Shrinkage of Alkali-Activated Materials

  • Marco Sirotti
  • , Stéphanie Staquet*
  • , Brice Delsaute
  • , Zhenming Li
  • , Guang Ye
  • , Özlem Cizer*
  • *Corresponding author for this work
  • Université libre de Bruxelles
  • CRIC-OCCN
  • Harbin Institute of Technology Shenzhen
  • Delft University of Technology
  • KU Leuven

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

The formation of micro-cracks due to restrained shrinkage is a significant concern for the durability and in-service implementation of alkali-activated materials (AAM). These cracks develop as a result of partial or total restrained deformations which occur when the material's properties are still evolving, and the deformation rate is high. This makes AAM especially susceptible to cracking during this critical early stage, leading to potential long-term durability issues. Therefore, it is particularly crucial to understand their restrained shrinkage behavior and early-age cracking risk. This chapter discusses two approaches for assessing the cracking sensitivity of AAM with a particular focus on the empirical method. It reviews the existing testing devices for evaluating restrained shrinkage and cracking in AAM, and compares and discusses key findings from the literature.

Original languageEnglish
Title of host publicationRILEM State-of-the-Art Reports
PublisherSpringer Science and Business Media B.V.
Pages503-523
Number of pages21
DOIs
StatePublished - 2026
Externally publishedYes

Publication series

NameRILEM State-of-the-Art Reports
Volume46
ISSN (Print)2213-204X
ISSN (Electronic)2213-2031

Keywords

  • Alkali-activated materials
  • Cracking
  • Restrained strain
  • Ring test
  • Stress

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