Title:
Deflection Prediction of Members of Any Concrete Strength
Author(s):
Amin Ghali and Azita Azarnejad
Publication:
Structural Journal
Volume:
96
Issue:
5
Appears on pages(s):
807-817
Keywords:
creep properties; deflection; high-strength concrete; shrinkage
DOI:
10.14359/735
Date:
9/1/1999
Abstract:
This paper presents a summary of a method of analysis to predict the immediate and time-dependent strain in reinforced concrete sections with or without prestressing. The main time-dependent parameters required for the analysis are the creep coefficient, free shrinkage, modu-lus of elasticity of concrete, and relaxation of the prestressed steel. Some codes give guidance on the values of the first three parameters as a function of the specified concrete strength f ?c. The analysis procedure is applied to different examples to show the influence of varying f?c on the predicted deflections. The analysis procedure is verified by comparisons of predicted deflections with published experimental data.