Conference proceeding
DURABILITY OF HISTORIC BRICK MASONRY
STRUCTURAL ANALYSIS OF HISTORICAL CONSTRUCTIONS, VOLS 1-3, pp.1836-1843
01 Jan 2012
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
An experimental program was conducted at Drexel University to study the durability of historic brick masonry walls. The objective of the study is to better understand the physical effects of the deterioration of historic masonry by looking at how the strength of brick masonry is affected by wetting/drying and salt crystallization cycles, which could be brought on by the rise and fall of ground water. This paper focuses on the deterioration of the brick masonry units being the key element in the deterioration process. Non-destructive testing was used in the investigation in an attempt to monitor deterioration with time. Also, relating non destructive testing results to those of more direct destructive tests can help in the future to lessen the need for excessive destructive testing which is critical for historic buildings. The specific non-destructive tests used were ultrasonic pulse velocity and resonance frequency tests. In terms of compressive strength, brick units that were left in water gave the lowest compressive strengths indicating that when masonry is exposed continually to moisture it tends to soften and weaken. The non-destructive testing results were found to be variable however there was a general trend showing that samples that contained salt crystals gave higher readings of velocity. Also non-destructive testing was useful in extreme cases where there were great differences in density. It is concluded that direct relationship between strength and non-destructive testing information is difficult to form because several factors influence the results however they can be used together to map areas of deterioration.
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Details
- Title
- DURABILITY OF HISTORIC BRICK MASONRY
- Creators
- Ahmad A. Hamid - Drexel UniversityMona Orphy
- Contributors
- J Jasienko (Editor)
- Publication Details
- STRUCTURAL ANALYSIS OF HISTORICAL CONSTRUCTIONS, VOLS 1-3, pp.1836-1843
- Publisher
- Dolnoslaskie Wydawnictwo Edukacyjne-Dwe
- Number of pages
- 8
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Identifiers
- 991019170386504721
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InCites Highlights
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- Web of Science research areas
- Construction & Building Technology
- Engineering, Civil