期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 114, 期 -, 页码 913-924出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2016.04.013
关键词
Masonry; Mortar; Mechanical properties; Load-bearing capacity; Finite element method; Digital image correlation
资金
- Czech Science Foundation [GA13-15175S]
- Ministry of Culture of the Czech Republic [DF11P01OVV008]
The paper focuses on the performance of various lime-based materials, alternative to Portland cement mortars, intended for application in repairing historic structures when subjected to mechanical loading. Results of basic material tests indicate that the use of metakaolin as a pozzolanic additive produces mortars with superior strength and sufficiently low shrinkage. Moreover, mortar strength can be further enhanced by the addition of crushed brick fragments, which explains the longevity of Roman concretes rich in pozzolans and aggregates from crushed clay products such as tiles, pottery, or bricks. An integrated experimental-numerical approach was used to identify key mortar parameters influencing the load-bearing capacity of masonry piers subjected to a combination of compression and bending. The simulations indicate increased load-bearing capacities for masonry piers containing metakaolin-rich mortars with crushed brick fragments, as a result of their superior compressive strength. (C) 2016 Elsevier Ltd. All rights reserved.
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