Stability of ancient masonry towers: Stress redistribution due to drying, carbonation, and creep
نویسندگان
چکیده
Extending the analysis of the evolution of pore humidity and carbonation presented in a preceding paper by Ferretti and Baz ̆ant, this paper analyzes the redistribution in time of vertical normal stresses across the multiple-leaf wall of ancient towers, using the example of collapsed Pavia Tower. It is shown that stress redistribution due to nonuniform shrinkage and nonuniform creep across the wall, including the additional redistribution due to cracking, produces in the masonry cladding of the wall very large compressive stresses that reach, after centuries, the level of compression strength of the cladding. © 2006 Elsevier Ltd. All rights reserved.
منابع مشابه
Stability of ancient masonry towers: Moisture diffusion, carbonation and size effect
Moisture diffusion and carbonation influence the behavior of multiple-leaf ancient masonry walls, producing during centuries a redistribution of stresses from the core of lime mortar concrete to the external cladding of stiff masonry. This is likely one of the causes of long-time damage of some ancient masonry towers. With these motivations, coupled processes of moisture diffusion, carbon dioxi...
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