Unreinforced masonry (URM) walls strengthened with composites were tested to failure at a decommissioned building in St. Louis, Missouri. The walls were subjected to out-of-plane loading. Previous work on URM as well as reinforced masonry walls strengthened with FRP laminates has shown remarkable increases in capacity and ductility. However, most of this research work has been conducted in the ...

in this paper the traditional covering plaster of masonry buildings is supplied with polypropylene and steel fiber to enhance their seismic behavior. the plaster mix proportion is determined by some initial mortar tests. also, one story, single span masonry building specimen plastered with different mortars is tested on a shaking table 8 times under a seismic input and the performance of the sp...

Abstract Acoustic emission monitoring is widely used for damage detection in materials research and site monitoring. Its use masonry structures however challenging due to the highly heterogenic nature of rapid signal attenuation. However, non-invasive high sensitivity technique also provide interesting opportunities, especially historical structures, locate damage, identify severity rate deteri...

This paper describes a methodology for analyzing the impulse pressure response of unreinforced concrete masonry walls that have been retrofitted with membranes that are not bonded to the masonry (catcher systems). Membrane catcher systems can be used to protect building occupants from secondary debris resulting from blast pressure, and the effectiveness of systems comprising polymers, composite...

The increasingly request for the maintenance of architectural heritage has led in last decades to extensive use System Identification (SI) techniques Structural Health Monitoring (SHM) purposes. These proved be useful tools assessing state conservation built environment and its behaviour operating conditions. In particular, historical masonry structures infrastructures present several compellin...

This paper deals with the failure risk of masonry constructions under the effect of floods. It is developed within a probabilistic framework, with loads and resistances considered as random variables. Two complementary approaches have been investigated for this purpose: – a global approach based on combined effects of several governing parameters with individual weighted contribution (material ...

Mechanical behaviour of old masonry may differ from the theoretical one to a great extent, hence it needs to be properly evaluated for quantifying the safety and serviceability of real structures, in view of their rehabilitation and/or seismic reliability assessment. Among the factors affecting such behaviour, the presence of moisture, mainly from rising damp, plays a key role in the deteriorat...

The purpose of this research program is to investigate the dynamic failure properties of an unreinforced masonry panel under controlled dynamic loading conditions. This rig design is based on the classic diamond loading pattern. It is designed to achieve a uniform stress over the central area of the panel. The aim of the measurements will be to measure the rate of damage evolution in an inital ...

Engineering efficiency is paramount for the introduction of novel systems and formats analysis. This work extends an accessible efficient analysis platform by combining kinematic equilibrium approach limit with single degree freedom nature a hinge-controlled masonry arch to perform dynamic modelling applied two-dimensional acceleration vectors. Utilising ideal conditions, minimum work-paths are...