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Special Issue Editors

Dr. Radoslaw Jasiński

Department of Building Structures and Laboratory of Civil Engineering Faculty, Silesian University of Technology, Gliwice, Poland
Interests: masonry structures; concrete structures; material analysis; numerical analysis; non-destructive testing (NDT), minor destructive testing (MDT)
Special Issues, Collections and Topics in MDPI journals

Prof. Dr. Łukasz Drobiec

E-Mail Website1 Website2
Guest Editor

Department of Building Structures, Silesian University of Technology, Gliwice, Poland
Interests: masonry structures; concrete structures; material analysis; numerical analysis; NDT
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Dr. Izabela Skrzypczak

E-Mail Website
Guest Editor

Faculty of Civil and Environmental Engineering and Architecture, Rzeszow University of Technology, 35-211 Rzeszow, Poland
Interests: civil engineering; material analysis; non-destructive testing (NDT), masonry structures; concrete structures

Prof. Dr. Eduardo Natividade-Jesus

E-Mail Website
Guest Editor

1. Institute for Systems Engineering and Computers of Coimbra (INESCC), 3030-290 Coimbra, Portugal
2. Department of Civil Engineering, Polytechnic Institute of Coimbra, 3045-093 Coimbra, Portugal
Interests: civil engineering; decision support; multi-criteria analyses; housing; urbanism; urban regeneration
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Masonry and reinforced concrete are the most common materials applied in building structures and buildings. Developments in the field of material and construction solutions, modeling, and design methods have been ongoing in recent years. There is a tendency towards increasing the slenderness of masonry structures, improving strength parameters, and increasing sound as well as thermal insulation. New technological solutions not only refer to masonry units and mortar but also to internal reinforcement, superficial reinforcement, and even pre-stressing reinforcement. Special concrete types of high strength that aim to reduce shrinkage or use non-metallic reinforcements, both dispersed and structural, are all examples of reinforced concrete structures. Considerable progress has been made in the advancement of design methods for predicting structures’ durability and safety.

The first edition of this Special Edition mainly focused on new construction and material solutions in masonry and reinforced concrete structures. In the second edition, we want to extend the thematic scope to include research on and analyses of existing structures, so as to complement laboratory research on and theoretical analyses of the problems of real objects. Therefore, this Special Issue (second edition) calls for papers in (but not limited to) the following areas:

Results from testing masonry units and mortar;
Studies on concrete mixes and specimens of hardened concrete;
Results from testing and analyzing masonry specimens;
Studies on reinforced concrete units;
Studies on and analyses of masonry walls;
Studies on and analyses of reinforced concrete structures;
Numerical modeling of masonry and reinforced concrete structures;
Probabilistic analyses of structures;
Development of new methods of designing;
Identification of mechanical parameters of existing structures;

Examination of existing masonry and reinforced concrete structures.

Dr. Radoslaw Jasiński
Prof. Dr. Łukasz Drobiec
Dr. Izabela Skrzypczak
Prof. Dr. Eduardo Natividade-Jesus
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Related Special Issue

Published Papers (1 paper)

Research

32 pages, 23019 KiB

Open AccessArticle

Comparative Studies of the Confined Effect of Shear Masonry Walls Made of Autoclaved Aerated Concrete Masonry Units

by Radosław Jasiński and Tomasz Gąsiorowski

Materials 2023, 16(17), 5885; https://0-doi-org.brum.beds.ac.uk/10.3390/ma16175885 - 28 Aug 2023

Cited by 2 | Viewed by 670

Abstract

Confined walls are popular in areas exposed to seismic action. The advantage of such structures is increased load-bearing capacity, ductility, and energy dissipation. Confined masonry walls are also used to restrain the intensity of cracking and improve load-bearing capacity in areas exposed to seismic action. This paper describes the research on 18 confined walls and presents a comparison with research on unconfined walls (referenced models). The confined models were classified into three series: HOS-C-AAC—without openings and with confining elements around the perimeter; HAS-C1-AAC with a centrally positioned opening and circumferential confinement; and HAS-C2-AAC with a centrally positioned window opening and additional confinement along the vertical edges of the opening. The area of the window opening was 1.5 m². All walls were made of autoclaved aerated concrete (AAC) masonry units of the nominal density class of 600. The walls were tested under initial compressive stresses σ_c = 0.1; 0.75; and 1.0 N/mm². The reference models without confinement (six models of the series HOS-AAC without openings and the series HAS-AAC with openings) were prepared from the same masonry units, had almost the same outer dimensions, and were tested under the same initial compressive stresses σ_c. The analysis was performed for the morphology of cracks, stress values at the moment of cracking and failure, stiffness, and angles of shear strain. The morphology of cracks was found to depend on initial compressive stresses and the presence of an opening. A significant increase in compressive stress leading to cracks and failure stresses was observed with increasing values of initial compressive stresses. As the wall behavior was clearly non-linear, the bilinear relationship described by energy dissipation E, stiffness at the moment of cracking K_cr, and maximum displacement u_u was proposed to be included in the engineering description of the relationship between horizontal load and displacement of confined walls. Confinement along the vertical edges of the opening having an area of 1.5 m² (acc. to EN 1996-1-1) increased the maximum forces P_max by ca. 45% and marginally affected the ductility of the wall when compared to the elements with circumferential confinement. Full article

(This article belongs to the Special Issue Masonry Structures and Reinforced Concrete Structures (2nd Edition))

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