It is common practice to purposely trap small air-voids in concrete in order to give it frost resistance. A large number of factors have been recognized to impact the ability to entrain and stabilize these microscopic air-voids in concrete. This dissertation investigates a number of these variables. However, the primary focus of this work is on investigating problems entraining and stabilizing air in concrete utilizing fly ash. These investigations include: evaluation of existing and newly created test methods to measure the impact of fly ash on the ability to air-entrain concrete, and the fresh and hardened properties of air-entrained fly ash concrete is investigated. Additional work is presented concerning some of the fundamental physical and chemical properties of air-void shells separated from cement paste and how they change with time.
| Identifer | oai:union.ndltd.org:UTEXAS/oai:repositories.lib.utexas.edu:2152/3331 |
| Date | 28 August 2008 |
| Creators | Ley, Matthew Tyler, 1978- |
| Contributors | Folliard, Kevin J. |
| Source Sets | University of Texas |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | electronic |
| Rights | Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works. |
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