Date of Award
2011
Document Type
Master's Thesis
Degree Name
Master of Science in Civil Engineering (MS)
College, School or Department Name
Department of Civil and Environmental Engineering
Advisor
Jacob Hiller
Abstract
When a concrete slab experiences differential volume change due to temperature, moisture, and shrinkage gradients, it deforms. The stresses induced by these differential volume changes can reduce the pavement’s fatigue life. Differential volume change is quantified by the equivalent temperature difference required to deform a comparable flat slab to the same shape as the actual slab. This thesis presents models to predict the equivalent temperature difference due to moisture warping and differential drying shrinkage. Moisture warping occurs because a portion of drying shrinkage is reversible, while differential drying shrinkage is due to the irreversible portion of drying shrinkage. The amount of reversible shrinkage was investigated for concretes made with different types of aggregate, including lightweight and recycled. Another source of differential volume change is built-in curl, which is caused by temperature gradients at the time of paving. This thesis also presents a comparison of methods used to quantify built-in curl.
Recommended Citation
Lederle, Rita Elizabeth, "Accounting for warping and differential drying shrinkage mechanisms in the design of jointed plain concrete payments", Master's Thesis, Michigan Technological University, 2011.