curling - 4/18/2007 1 1 Curling of Concrete Pavement...

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Unformatted text preview: 4/18/2007 1 1 Curling of Concrete Pavement Curling of Concrete Pavement Quintin Watkins CEE 8813 Spring 2007 2 Outline Outline Cause Analysis Research Project Conclusion 4/18/2007 2 3 Curling Cause Curling Cause Temperature - Curling Moisture - Warping Shrinkage Creep 4 Temperature Gradient Temperature Gradient- Curling Curling Ref. Ceylan, H et al. (2007) 4/18/2007 3 5 Construction Temperature Construction Temperature Effects Effects Ref. Ceylan, H et al. (2007) 6 Temperature Temperature Profile of Slab Profile of Slab Ref. Ceylan, H et al. (2007) Temperature profile through the depth of PCC is nonlinear 4/18/2007 4 7 Moisture Moisture Gradient Gradient - Warping Warping Ref. Ceylan, H et al. (2007) 8 Slab Moisture Content Slab Moisture Content Ref. Carrier, R.E et al. (1975) 4/18/2007 5 9 Shrinkage Shrinkage Early Age Chemical Autogeneous Plastic Hardened Concrete Drying Shrinkage 10 Pavement Drying and Wetting Pavement Drying and Wetting Behavior Behavior Ref. Mindess et al. (2003) 4/18/2007 6 11 Creep Creep Ref. Ceylan, H et al. (2007) 12 time Contraction Drying Creep Basic Creep Drying Shrinkage Autogenous Shrinkage Elastic Strain Beginning of drying (t o ) and loading (t ) Final Setting Shrinkage and Creep Effect Shrinkage and Creep Effect 4/18/2007...
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curling - 4/18/2007 1 1 Curling of Concrete Pavement...

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