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Full-Text Articles in Engineering
Improving The Spacer-Concrete Interface For Bond Strength And Durability, Fadhilah Muslim, H. S. Wong, N. R. Buenfeld
Improving The Spacer-Concrete Interface For Bond Strength And Durability, Fadhilah Muslim, H. S. Wong, N. R. Buenfeld
International Conference on Durability of Concrete Structures
Spacers are important devices in reinforced concrete that are used to support reinforcing steel during concreting in order to achieve the required concrete cover. They are placed at every meter length or less of steel reinforcement and left permanently in the structure. However, it has been shown that the weak interface between spacer and concrete is highly porous and microcracked. This lowers the resistance of the concrete cover to ingress of aggressive agents causing degradation. This study aims to address this problem by improving spacer design to enhance bond strength and durability of the spacer-concrete interface. Cementitious spacers with a …
Surface Treatments For Concrete Under Physical Salt Attack, Mohamed Sakr, Mohamed T. Bassuoni
Surface Treatments For Concrete Under Physical Salt Attack, Mohamed Sakr, Mohamed T. Bassuoni
International Conference on Durability of Concrete Structures
Physical salt attack (PSA) is a key deterioration mechanism for concrete structures in contact with salt-rich media. Yet, procedures and techniques for protecting and repairing concrete affected by PSA are not adequately addressed in the technical literature. Therefore, in this study, three surface coatings of concrete were tested to determine their ability to withstand conditions stimulating to PSA. The treatments were selected to achieve either a single function such as acting as a membrane layer or hydrophobic agent, or combined pore blocking and water repelling functions. Coatings were applied on a concrete mixture typically used for residential foundations in Canada. …