scholarly journals Experimental Characterization of Traditional Mortars and Polyurethane Foams in Masonry Wall

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Dora Foti ◽  
Michela Lerna ◽  
Vitantonio Vacca
Keyword(s):  
Applied Load ◽  
Thermal Inertia ◽  
Masonry Wall ◽  
Polyurethane Foams ◽  
Masonry Walls ◽  
Masonry Buildings ◽  
Experimental Characterization ◽  
Shear Tests ◽  
The Poor

Masonry is a composite material largely used in construction. It exhibits several advantages, including significant compressive strength, thermal inertia, and aesthetic beauty. A disadvantage of masonry is mainly related to the inadequate shear strength due to the poor capacity and ductility of the adopted mortar. This aspect is crucial in seismic areas. In this paper, the behavior of polyurethane foams, used as adhesives for the construction of thin joints brick masonry walls, has been investigated. First, the characterization of components was carried out, followed by laboratory uniaxial tests on masonry walls and shear tests on triplets. Moreover, a comparison of the behavior of the foam-brick walls with respect to the traditional mortars masonry was carried out, as the type of joints varies and the arrangement of the holes of the bricks varies with respect to the direction of the applied load. Results provide indications on which adhesive has to be adopted for masonry buildings in reference to the site of construction (i.e., seismic hazard).

scholarly journals Experimental characterization of the out-of-plane performance of regular stone masonry walls, including test setups and axial load influence

2015 ◽  
Vol 13 (9) ◽  
pp. 2667-2692 ◽  
Author(s):  
Tiago Miguel Ferreira ◽  
Alexandre A. Costa ◽  
António Arêde ◽  
Ana Gomes ◽  
Aníbal Costa
Keyword(s):  
Axial Load ◽  
Stone Masonry ◽  
Masonry Walls ◽  
Experimental Characterization ◽  
Out Of Plane

scholarly journals Mechanical and Typological Characterization of Traditional Stone Masonry Walls in Old Urban Centres: A Case Study in Viseu, Portugal

Buildings ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 18 ◽  
Author(s):  
José Carlos Domingues ◽  
Tiago Miguel Ferreira ◽  
Romeu Vicente ◽  
João Negrão
Keyword(s):  
Safety Evaluation ◽  
Stone Masonry ◽  
Masonry Walls ◽  
Masonry Buildings ◽  
Existing Buildings ◽  
Urban Center ◽  
In Situ Characterization

Essential for any intervention in existing buildings, a thorough knowledge of both structural and material characteristics is even more important in the case of traditional stone masonry buildings, due both to the variability of this technology’s properties and the degradation buildings might have sustained. In Portugal, a number of in situ and laboratory experimental campaigns has allowed us in recent years to expand the knowledge on the mechanical properties of stone masonry walls. Nevertheless, the existence of different wall typologies built with the same material necessitates that this characterization takes into account the various regional constructive cultures. This paper presents the results obtained through an in-situ characterization campaign carried out in the old urban center of Viseu, for which there is no information available in the literature. Granite stone masonry walls of two different buildings were analyzed and characterized considering their geometrical and material features, contributing to the identification of stone masonry typologies present in the city’s old urban center. Flat-jack testing yielded resistance and deformability parameters to be used both in safety evaluation and intervention design. The properties obtained can be said to be consistent with those deriving from other experimental campaigns, conducted in granite walls of different typologies, throughout the country. Simultaneously, relevant conclusions about the use of flat-jacks to characterize this type of stone masonry were drawn.

Experimental characterization of timber framed masonry walls cyclic behaviour

2015 ◽  
Vol 53 (2) ◽  
pp. 189-204 ◽  
Author(s):  
Ana Maria Goncalves ◽  
Joao Gomes Ferreira ◽  
Luis Guerreiro ◽  
Fernando Branco
Keyword(s):  
Masonry Walls ◽  
Experimental Characterization ◽  
Cyclic Behaviour

“Built Mostly of Itself”: Chicago and Clay, 1874–1891

2017 ◽  
Author(s):  
Thomas Leslie
Keyword(s):  
New York ◽  
Masonry Wall ◽  
Masonry Walls ◽  
Masonry Buildings ◽  
Masonry Structures ◽  
Hybrid Strategy ◽  
Floor Space ◽  
Primary Material ◽  
Metal Frame

This chapter describes major structures built from 1874–1891, which were dominated by taller masonry buildings that employed improved masonry, foundations, and fireproofing. Early fire-protected iron-framed buildings achieved modest increases in height over all-masonry structures. Wrapping iron columns and girders with terra-cotta jackets saved owners floor space that would otherwise have gone toward larger brick piers, though masonry was still the primary material for exterior walls. The result—jacketed iron structures inside surrounded by bearing masonry walls outside—was called “cage” construction in New York. The skyscrapers built in Chicago's building boom of 1884—1886 all deployed this hybrid strategy of metal frame and masonry wall. Skyscrapers supported, braced, and clad with masonry were also made stronger and more economical by the rise of a pressed-brick industry in Chicago.

scholarly journals Experimental Characterization of the In-plane and Out-of-Plane Behaviour of Infill Masonry Walls

2015 ◽  
Vol 114 ◽  
pp. 862-869 ◽  
Author(s):  
André Furtado ◽  
Hugo Rodrigues ◽  
António Arêde ◽  
Humberto Varum
Keyword(s):  
Masonry Walls ◽  
Experimental Characterization ◽  
Out Of Plane ◽  
Infill Masonry
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