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Thesis - Campus Access Only
Master of Science (MS)
Civil and Environmental Engineering
Autogenous, Cement Paste, Concrete, Creep, Experimental study, Shrinkage
The main types of volume change in concrete that affect the performance of structures by causing stresses, crack, and deflection are creep and shrinkage. In this study, a concrete creep test was conducted on different concrete mixes to investigate age of loading, compressive strength, and the long-term effect on creep of concrete. Five different code models, namely the ACI 209R-92, B3, CEB 90, CEB MC90-99, and GL2000, were utilized in this study. The study results showed that creep increased over time; however, the rate of increase diminished after 250 days. Furthermore, increasing age of loading and compressive strength lowered concrete creep. We also introduced a new device for measuring autogenous shrinkage of cement paste to investigate mixes with different water-to-cement ratios containing fly ash or silica fume. We concluded that as the water-to-cement ratio decreased, the autogenous shrinkage increased. Also adding fly ash and silica fume decreased autogenous shrinkage.
Fakhari, Maryam, "Creep of High Strength Concrete and Autogenous Shrinkage of Cement Paste" (2013). Master's Theses. 4271.