Constitutive relations of coral aggregate concrete under uniaxial and triaxial compression

Wen Zhou, Peng Feng*, Hongwei Lin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

85 Citations (Scopus)


Coral aggregates can replace natural aggregates in marine construction, substantially reducing construction costs and shortening construction period. This paper investigates the compression behavior of coral aggregate concrete (CAC) under uniaxial and triaxial loading, wherein lightweight aggregate concrete (LAC) and normal aggregate concrete (NAC) are used for comparison. The investigated variables include concrete type, concrete strength, lateral pressure and principal stress ratios. The results indicated that the compression behaviors of CAC were different from those of NAC but similar to those of LAC because coral aggregates are more porous and have lower strength than normal aggregates. Based on the test results from this paper and literature studies, constitutive models were suggested for CAC under uniaxial and conventional triaxial compression. Moreover, a failure criterion for LAC proposed in the literature was deemed applicable to CAC under active or passive confinement. The suggested models correlated well with the test results.
Original languageEnglish
Article number118957
Number of pages14
JournalConstruction and Building Materials
Publication statusPublished - 2020
Externally publishedYes


  • Coral aggregate concrete
  • Uniaxial compression
  • Triaxial compression
  • Constitutive model
  • Failure criterion


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