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Appl. Sci. 2018, 8(1), 98; doi:10.3390/app8010098

Effect of Thin Cement-Based Renders on the Structural Response of Masonry Wall Panels

Department of Engineering, University of Perugia, Via Duranti 93, 06125 Perugia, Italy
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Received: 19 December 2017 / Revised: 4 January 2018 / Accepted: 9 January 2018 / Published: 11 January 2018
(This article belongs to the Section Materials)
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Abstract

URM (Unreinforced Masonry) historic buildings can be generally arranged into three categories: adobe, brick and stone masonry. However, a common feature of URM structures is typically the low mechanical properties of the masonry material, especially in terms of shear strength. URM buildings are not amenable to seismic analysis, and the relatively low strength of stone and brickwork masonry often requires expensive and invasive retrofitting intervention. Hard, intractable stones broke artificially or naturally into random shapes were often used for construction in many parts of Europe and constitute the main material of historic buildings. Thin, cement or lime-based renders are often employed to protect masonry construction, but these are frequently ignored in analysis and design. This paper shows how standard, thin, cement-based renderings can highly enhance the lateral load-capacity and shear stiffness of wall panels. An experimental campaign was carried out on-site to assess the effect of cement-based renders. In detail, compression and shear tests were conducted on twelve full-scale wall panels up to failure, and comparisons are presented to study the effect of cement-based renders on the structural behavior of stone and brickwork masonry panels. View Full-Text
Keywords: historic masonry; on-site testing; mechanical properties; cement-based renders; shear strength historic masonry; on-site testing; mechanical properties; cement-based renders; shear strength
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Corradi, M.; Sisti, R.; Borri, A. Effect of Thin Cement-Based Renders on the Structural Response of Masonry Wall Panels. Appl. Sci. 2018, 8, 98.

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