Damage Detection and Evaluation of Repair Materials and Techniques for Concrete Bridges

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Karimi, Roya | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 42837 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Joghataie, Abdoreza
Abstract:
Poor maintenance of concrete bridges in the past years in Iran, caused serious damages, so most of them need rehabilitation. The majority of repaired members are exposed to repeated damage because compatibility of repair material to substrate concrete not considered as well as weather and loading conditions. This study attempts to improve the repair achievement and durability of concrete bridges. This investigation contains two phases: preliminary study and experimental phase. Preliminary study attends to detect different types of damages of concrete bridges and their causes along with their propagation. The next part of this study discusses about various types of repair materials. In experimental phase, the behavior of six types of repair mortars included cement based and resin based mortars. Slant shear test, composite beam flexural strength and composite cylindrical compressive strength resulted through relevant experiments and main factors affecting these bonds are investigated, moreover the effect of Latex on bond strength was studied. The experiments showed that latex has a good effect on bond strength.
Keywords:
Upgrading ; Latex ; Rehabilitation ; Concrete Bridge ; Repair Materials ; Bond Strength

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