Prediction of moisture curling of concrete slab

Chang Joon Lee, David A. Lange, Yi Shi Liu

Research output: Contribution to journalArticlepeer-review

Abstract

Moisture curling occurs due to non-uniform moisture distribution in a concrete slab. The curled geometry and self-weight of the slab induce undesirable high stress region near the drying surface, and may cause cracks when external wheel loadings are applied. Therefore, alleviating the degree of curling is an important issue in pavement design, and a proper prediction scheme is essential in design process. In this paper, a systematic procedure for predicting moisture curling of slab is presented including material model description, material model calibration, and finite element simulation. The study employs a material model describing elastic response, creep, drying shrinkage, and thermal expansions. The material model is incorporated into a finite element analysis (FEA) code ICON developed at University of Illinois. The material model and prediction scheme were validated with the experimental result of a single slab moisture curling test conducted at the National Airport Pavement Test Facility (NAPTF).

Original languageEnglish (US)
Pages (from-to)787-803
Number of pages17
JournalMaterials and Structures/Materiaux et Constructions
Volume44
Issue number4
DOIs
StatePublished - May 2011

Keywords

  • Concrete slab curling
  • Creep
  • Drying shrinkage
  • Finite element analysis

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

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