Pages
- 1
- 2
- document
-
Gaggero, M.B. (author), Korswagen, Paul A. (author), Esposito, R. (author), Rots, J.G. (author)Innovative solutions for seismic-retrofitting existing structures are currently required, as often traditional strategies are expensive, non-reversible, highly invasive, and/or fail to address both serviceability and ultimate limit states together. The present paper describes a preliminary experimental campaign performed at TU Delft to...journal article 2023
- document
-
Gaggero, M.B. (author), Korswagen, Paul A. (author), Esposito, R. (author), Rots, J.G. (author)Cracks are one of the most common expressions of damage in masonry structures. Aside from aesthetic issues, they can compromise the overall behaviour of the structure; therefore, they are undesirable and need to be repaired. The repointing technique is traditionally implemented in this context, especially in historical masonry. Nevertheless,...book chapter 2023
- document
-
Ferretti, Francesca (author), Jafari, S. (author), Esposito, R. (author), Rots, J.G. (author), Mazzotti, Claudio (author)The shove test (ASTM Standard C1531) is an experimental technique aimed at studying the shear-sliding behavior of brick masonry. It can be executed according to various testing methods that differ in the way the vertical compression load is applied and in the way bricks and/or joints are locally removed for inserting jacks. One of the most...journal article 2022
- document
-
Jafari, S. (author), Rots, J.G. (author), Esposito, R. (author)To date, several different structural representations of masonry are available for use in the numerical and analytical assessment methods, each calling for a distinct level of refinement regarding the material input. To determine material properties, in terms of strength, stiffness, and toughness under compression, bending, and shear loading,...journal article 2022
- document
-
Chang, L. (author), Rots, J.G. (author), Esposito, R. (author)Perforated unreinforced masonry (URM) walls in out-of-plane (OOP) two-way bending are commonly encountered in natural hazard investigations. However, related research is rather limited. This study focuses on the influence of openings on the two-way bending capacity of URM walls. An experimental database about the perforated URM walls in OOP...journal article 2022
- document
-
Licciardello, L. (author), Rots, J.G. (author), Esposito, R. (author)Bed joint reinforced repointing is a strengthening method often used in the Netherlands to counteract settlement damage. This strengthening technique consists of cutting a slot in the mortar joint and installing twisted steel bars embedded in a high-strength repair mortar. Due to the increase in seismic activities, triggered by gas extraction in...conference paper 2021
- document
-
Chang, L. (author), Rots, J.G. (author), Esposito, R. (author)Out-of-plane (OOP) failure of unreinforced masonry (URM) walls in two-way bending was widely observed after natural hazards such as earthquakes. Of various crucial factors influencing the force capacity of URM walls in OOP two-way bending (force capacity being defined as the wall peak force in terms of pressure), the pre-compression and...journal article 2021
- document
-
Esposito, R. (author), Ravenshorst, G.J.P. (author), Rots, J.G. (author)Due to the increase of induced seismic activities in the Groningen area (north part of the Netherlands), the assessment of low-rise residential buildings with slender façade piers became of relevance. In this framework, the in-plane response of slender walls made of calcium silicate (CS) brick and element masonry is investigated in this paper...journal article 2021
- document
-
Chang, L. (author), Rots, J.G. (author), Esposito, R. (author)Research has shown that lateral boundary conditions can have a large influence on the force capacity of two-way spanning unreinforced masonry (URM) walls subjected to out-of-plane (OOP) loading. Differently than laterally free one-way spanning walls, they show a higher force capacity, which however is underestimated by current analytical...book chapter 2020
- document
-
Drougkas, A. (author), Licciardello, L. (author), Rots, J.G. (author), Esposito, R. (author)Induced seismicity due to gas extraction in the province of Groningen in the Netherlands has a noticeable impact on building structures. Historic masonry structures in the area, which are non-engineered and lacking empirical design features often present in traditionally seismic regions, are especially vulnerable to dynamic loading. Compounding...conference paper 2020
- document
-
Drougkas, A. (author), Licciardello, L. (author), Rots, J.G. (author), Esposito, R. (author)The province of Groningen in the Netherlands is experiencing the continuous impact of gas extraction in the form of induced seismicity. Due to the absence of naturally occurring seismicity in the region, the historic building stock of Groningen was constructed without empirical design features typically encountered in naturally seismic...journal article 2020
- document
-
Jafari, S. (author), Rots, J.G. (author), Esposito, R. (author)In this study, tests on cores and companion tests on triplets are compared with respect to the evaluation of the nonlinear shear-sliding behaviour of masonry, including the determination of post-peak softening response. Due to its slightly-destructive sampling nature and its good agreement with triplet results, the core testing method is...journal article 2020
- document
-
Messali, F. (author), Esposito, R. (author), Ravenshorst, G.J.P. (author), Rots, J.G. (author)The material and structural performance of calcium silicate (CS) brick masonry has received relatively little attention in the past, although this material is often used for the construction of low-rise buildings in Central and Northern Europe. Upon the occurrence of induced seismicity in the north of the Netherlands, an extensive testing...journal article 2020
- document
-
Jafari, S. (author), Rots, J.G. (author), Esposito, R. (author)This study investigates the applicability of the core testing method to assess the complete nonlinear behavior of masonry in compression. A comparative experimental approach was adopted performing compressive tests on cores and companion wallets. Via a correlation study on seven objects, including literature data, a one-to-one correlation for...journal article 2019
- document
-
Esposito, R. (author), Messali, F. (author), Ravenshorst, G.J.P. (author), Schipper, H.R. (author), Rots, J.G. (author)The exploitation of geo-resources in the northern part of the Netherlands (Groningen region) is triggering shallow earthquakes, rising the need of assessing the current building stock. Being the region not prone to tectonic earthquakes, buildings are designed as wind-resistant systems and have specific characteristics that can limit their...journal article 2019
- document
-
Damiola, M. (author), Esposito, R. (author), Messali, F. (author), Rots, J.G. (author)Out-of-plane failure is one of the most important mechanisms for unreinforced ma-sonry (URM) structures to be prevented in the seismic areas. The one-way out-of-plane bend-ing failure mechanism has been studied by several authors. The two-way bending failure mechanism has received much less attention and only few formulations for specific cases...conference paper 2018
- document
-
Ferretti, F. (author), Mazzotti, C. (author), Esposito, R. (author), Rots, J.G. (author)Masonry is a composite material, whose behavior is strongly influenced by the presence of vertical and horizontal mortar joints, weak elements along which the shear failure usually occurs. The scope of the present work was to investigate factors that could affect the shear-sliding behavior of masonry, by performing numerical simulations of...conference paper 2018
- document
-
Jafari, S. (author), Esposito, R. (author), Rots, J.G. (author)To accurately assess the performance of existing unreinforced masonry (URM) structures, the mechanical characteristics of masonry under compressive loading are required. The compression properties of existing URM can be evaluated through different methods, either performing destructive tests (DTs) or slightly destructive tests (SDTs). DTs can be...conference paper 2018
- document
-
Messali, F. (author), Pari, M. (author), Esposito, R. (author), Rots, J.G. (author), den Hertog, D (author)In recent years induced seismicity in the north of the Netherlands has considerably increased. The built environment in the region mainly consists of unreinforced masonry (URM) buildings. Those buildings were not designed for seismic loads and have specific characteristics, that limit their seismic performance. In early 2017 a quasi-static...conference paper 2018
- document
-
Skroumpelou, Georgia (author), Messali, F. (author), Esposito, R. (author), Rots, J.G. (author)The assessment of the seismic response of unreinforced masonry (URM) buildings has been a popular topic all over the world in the last decades. In recent years, induced seismicity in the north of the Netherlands increased considerably and introduced seismic risk also in this country. The built environment in the region is mainly composed by...conference paper 2018
Pages
- 1
- 2