Creep, Shrinkage, and Modulus of Elasticity of High-Performance Concrete

TLDR: In this paper, the shrinkage strain, creep coefficient, and modulus of elasticity of high performance concrete (HPC) mixtures with local materials from Nebraska were investigated.

Abstract: The material properties of high-performance concrete (HPC) directly affect the design and construction of prestressed HPC bridge girders and their cast-in-place deck slabs. This paper discusses research experiments conducted over more than 2 years on material properties such as creep, shrinkage, and modulus of elasticity of 3 HPC mixtures with local materials from Nebraska. Test results from this research show that current ACI equations for shrinkage, creep, and modulus of elasticity of concrete do not accurately predict these material properties for HPC. Revised formulas for shrinkage strain and creep coefficient are proposed. Through this study, it was also indicated that it would be desirable to determine experimentally the shrinkage strain, creep coefficient, and modulus of elasticity using the locally available aggregates for the specified HPC mixture proportions.