M.Sc. Tezi Görüntüleme

      It is fairly well known that concrete durability is as much important as strength; moreover, it is primary concern in some circumstances. Permeability is the key to the durability. On the other hand, permeability is closely related to the voids system of the concrete. Concrete with fewer amounts of voids and disconnected with one another, it is said to be impermeable. The structure of voids in concrete is straightly related to the mix proportions, placing, compaction, and curing procedures of concrete. Concrete structures, particularly those subjected to waters, are at the risk of various harmful agents such as chlorides and sulfates transported through the concrete via water. The permeation of such agents in concrete gets easy as the permeability of concrete increases. At the end, both the strength and the durability of concrete diminish. In other words, the service life of the concrete structure shortens. Mineral additives are used most commonly in concrete to suppress the permeability. Such materials decrease the permeability of concrete since they are generally ground finer than cement.