The current empirical model for the Florida Department of Transportation (FDOT) concrete modulus of elasticity (E) is a function of concrete compressive strength and unit weight. Recent testing shows that this model consistently underestimates E for FDOT concrete. This underestimation may lead to construction problems caused by the overprediction of camber and the deflection of concrete structural members. E values for the typical concrete mix used in FDOT projects were experimentally determined at various concrete ages. Regression analyses were used to find the E models that best fit the generated data, and such models were compared with existing E models from the literature. It was found that the aggregate type and specific gravity play significant roles in influencing the E value of concrete. The best-fit E models for FDOT concrete, together with suggested modification factors for various aggregate types, are recommended.
Aggregate-Based Modulus of Elasticity for Florida Concrete
Transportation Research Record
Transportation Research Record: Journal of the Transportation Research Board ; 1914 , 1 ; 15-23
2019-01-01
Article (Journal)
Electronic Resource
English
Aggregate-Based Modulus of Elasticity for Florida Concrete
Online Contents | 2005
|Aggregate-Based Modulus of Elasticity for Florida Concrete
Transportation Research Record | 2005
|Transportation Research Record | 2003
|Varying modulus of elasticity for coiled tubing material
Tema Archive | 1999
|