Fracture of porous materials induced by crystallization of salt
Name
71269537-MIT.pdf
Description
Full printable version
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2.59 MB
Format
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Checksum (MD5)
763e6d7a049a008e54e81dc37f2e37ff
Author(s)
Katzoff, Golda Y
Advisor(s)
Franz-Josef Ulm.
Date Issued
2006
Publisher
Massachusetts Institute of Technology
Abstract
The penetration of salt into porous materials is known to have deleterious effects, often resulting in fracture. The damage process begins with a saline solution penetrating the porous network by way of capillary action. This is followed by supersaturation of the saline solution, which may result in the formation of salt crystals. In turn, these salt crystals induce pressure on the pore walls. Though the stress generated by the crystallization of salt in a single pore alone is unlikely to result in fracture, if the crystallization region is large enough, the combined effects can lead to fracture. This thesis will first provide an overview of the crystallization process and then focus on the factors leading directly to fracture. The thesis will examine various key processes proposed by researchers, identify elements that have not yet been explored, and finally propose a cohesive outline of the processes responsible for fracture.
Description
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2006.
Includes bibliographical references (leaf 40).
Subjects
Civil and Environmental Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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