Designing durable concrete structures is becoming increasingly important with emphasis being placed on extending service life. This project focuses on the effect of low temperatures on chloride binding, chloride binding capacity and ion-binder interactions with respect to hydroxyl ions and pH. Three supplementary cementitious materials were used as well as two w/b ratios, and four curing times. The effect of temperature cycling on chloride binding, binding capacity and ion-binder interaction were also investigated. With temperatures decreasing from 23°C to -15°C, there is a decrease in bound chloride and chloride binding capacity, with GGBFS>GU>MK>SF being the order of binding. When temperature cycling was performed, the binding capacity changed depending on the exposure temperature, with warmer temperatures associated with higher binding capacities. When service life estimates were conducted using Life-365 software, it was found chloride binding capacities determined at 23°C may not be conservative when estimating service life in colder climates.
| Identifer | oai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/32292 |
| Date | 26 March 2012 |
| Creators | Yee-Ching, Ge-Hung |
| Contributors | Panesar, Daman |
| Source Sets | University of Toronto |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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