A Model to Predict Restrained Shrinkage Cracking of Fiber Reinforced Concreteby Surendra P. Shah, Northwestern Univ, Evanston, United States,
Miroslaw Grzybowski, Northwestern Univ, Evanston, United States,
Abstract: Cracking due to restrained shrinkage occurs very often in an engineering practice, causing serious problems such as increased water permeability of the structure and corrosion of the reinforcement. In order to improve concrete behavior in tension, fiber reinforcement is often used. An anlytical model to predict cracking in plain and fiber reinforced concrete due to restrained shrinkage is proposed in this paper. The model incorporates many of the key influential parameters (shrinkage, creep, aging, microcracking, etc.) and enables to predict the progressive cracking development in fiber reinforced cementitious composites subjected to restrained shrinkage. The model proposes a combination of the continuous damage concept with the fracture mechanics approach. The mode-based computer programs for numerical analysis was developed. A good agreement was found between the theoretical predictions and the test results obtained by the authors.
Subject Headings: Fiber reinforced concrete | Cracking | Shrinkage (material) | Reinforced concrete | Engineering profession | Water management | Permeability (material) | Corrosion
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