Rita Esposito

Rita Esposito
Delft University of Technology | TU · Department of Materials, Mechanics, Management and Design

Ph.D.

About

45
Publications
7,449
Reads
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490
Citations
Citations since 2017
30 Research Items
448 Citations
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
2017201820192020202120222023020406080100120
Additional affiliations
October 2018 - present
Delft University of Technology
Position
  • Professor (Assistant)
January 2015 - September 2018
Delft University of Technology
Position
  • PostDoc Position
April 2010 - December 2010
Università di Parma
Position
  • Researcher

Publications

Publications (45)
Article
Full-text available
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 investigate...
Article
Full-text available
Accurate assessment of the overall mechanical behavior of masonry, composed of bricks and mortar joints, remains challenging due to its inhomogeneous and orthotropic nature. In this study, the feasibility of various mean-field homogenization schemes for the three-dimensional orthotropic elastic properties of masonry is comprehensively investigated....
Chapter
Full-text available
The microporomechanics theory, which combines the mean-field homogenization method and linear fracture mechanics theory, has been successfully adopted to study the nonlinear behavior of composite-like materials, such as alloy, rocks and concretes. The application of such theory is however mainly limited to the isotropic quasi-brittle materials and...
Article
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 critical...
Article
Full-text available
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 two-way...
Article
Masonry panels consisting of piers and spandrels in buildings are vulnerable to in-plane actions caused by seismicity and soil subsidence. Tectonic seismicity is a safety hazard for masonry structures, whereas low-magnitude induced seismicity can be detrimental to their durability due to the accumulation of light damage. This is particularly true i...
Article
Full-text available
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 aspect rati...
Article
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, exten...
Article
Full-text available
Investigations of post-seismic events show that the collapse of walls in out-of-plane (OOP) two-way bending can be one of the most predominant failure mechanisms for unreinforced masonry (URM) structures. To assess the force capacity of URM walls in OOP two-way bending, various analytical formulations have been developed during past decades. Howeve...
Article
Full-text available
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 regions. Fur...
Article
Full-text available
The effect of mortar and brick properties on the growth of ivy-leaved toadflax (Cymbalaria muralis) and yellow corydalis (Pseudofumaria lutea) has been investigated in laboratory. Different mortar compositions were designed and tested in combination with two different bricks. Highly porous bricks and mortars showed good bioreceptivity; mortars with...
Chapter
Full-text available
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 formulatio...
Article
Full-text available
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 programme...
Article
Full-text available
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 confirmed...
Article
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 both...
Article
Full-text available
This paper proposes a photogrammetric procedure able to determine out-of-plane movements experienced by a masonry structure subjected to a quasi-static cyclic test. The method tracks the movement of circular targets by means of a coarse-to-fine strategy. These targets were captured by means of a photogrammetric network, made up of four cameras opti...
Article
Full-text available
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 seismic p...
Conference Paper
In recent years, induced seismicity in the north of the Netherlands significantly increased. As a consequence, the seismic assessment of the built environment, which mainly consists of unreinforced masonry (URM) structures not designed for seismic loads, became of high relevance. Within this context, an extensive multiscale testing program has been...
Conference Paper
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 cyclic p...
Article
Full-text available
Vulnerability of buildings to natural and man-induced hazards has become a main concern for our society. Ensuring their serviceability, safety and sustainability is of vital importance and the main reason for setting up monitoring systems to detect damages at an early stage. In this work, a method is presented for detecting changes from laser scan...
Article
Full-text available
In the northern part of the Netherlands, the recent seismic activities have raised concerns about the behavior of unreinforced masonry structures which were not designed and constructed to resist seismic loading. The first step towards assessment of seismic behavior of masonry structures is to characterize the material properties. This characteriza...
Article
The assessment of concrete structures affected by alkali–silica reaction (ASR) is a complex problem due to the multiscale nature of this long-term phenomenon. The reaction starts within the concrete constituents and developed at aggregate level by inducing swelling and deterioration of concrete material, which eventually affect the capacity of the...
Article
In the last years, the induced seismicity in the northern part of the Netherlands has considerably increased. The existing building stock was not designed for seismic loading, and it is characterised by very slender walls, limited cooperation between walls and floors, and use of cavity walls. As a consequence, the validation of analytical and numer...
Conference Paper
Full-text available
The evaluation of the seismic response of unreinforced masonry buildings is a popular topic all over the world. In recent years, also the Netherlands started to face seismic risk, since the induced seismicity in the north of the country considerably increased (the gas extraction started in 1963, and earthquakes have occurred since the early ‘90s, w...
Article
The alkali-silica reaction (ASR) in concrete is one of the most harmful deterioration processes, which leads to expansion and cracking of the material. To understand the evolution of ASR in concrete and its deteriorating impact on the material, a multiscale material model, from aggregate to concrete level, is proposed. The concrete, which at macro...
Article
The alkali-silica reaction (ASR) is an important problem that has yet to be completely understood. Owing to the complexity of this phenomenon, a number of studies have been conducted to characterize its kinetics, its impact on the material, and its structural consequences. This paper focuses on the deteriorating impact of ASR on concrete material,...
Conference Paper
The deteriorating effect of alkali-silica reaction in concrete has a relevant impact both on the material and on the structural performance. This effect is mainly considered in terms of concrete expansion and microscopic damage within the aggregates. Limited attention is reserved to the degradation of mechanical properties, which are often used in...
Chapter
Full-text available
Structures affected by Alkali-Silica Reaction (ASR) include large massive concrete dams and bridges, which are considered essential for the infrastructure system, and not easily replaceable. The main feature of this reaction is the creation of a hydrophobic expansive gel which causes internal damage in the concrete. This damage is strongly related...
Article
In this paper, the behaviour of a squat shear wall is investigated. The study fits into the experimental programme driven by CEOS.fr on modelling of the behaviour of reinforced concrete (RC) structures subjected to monotonic and cyclic loading. The shear wall has been analysed through non-linear finite element (NLFE) analyses and analytical procedu...
Article
The durability and serviceability of existing concrete structures has become a relevant issue. The concrete can be subjected to various degradation mechanisms; one of this is the alkali-silica reaction. This long-term process results in an expansive gel which is the product of the reaction between the alkali, mainly present in the cement paste, and...
Article
Many models to determine the shear capacity of shear reinforced beams are based on the truss analogy. Various proposals have been formulated in recent years, all of which differ with regard to the limits of strut inclination. Remarkably, those limits do not depend on the type of concrete, which could be expected to be critical for the shear frictio...
Article
Full-text available
This paper outlines a project (namely PAT-ASR) which entails the development of a multi scale material performance assessment model on simulation of alkali silica reaction deployment and its effects on concrete durability. Performance models require a multi scale approach from micro (namely reaction chemistry) to macro level studies (namely structu...
Article
Full-text available
In this paper the anisotropic behavior of ASR swelling is simulated through a 1D smeared crack model. The choice of the engineering properties is discussed, in particular for the evolution of the tensile strength and the Young’s modulus during the swelling. The last one is used as the main indicator for ASRrelated damage. The model is hampered by t...
Article
The Alkali-Silica Reaction (ASR) can generate harmful effects in the concrete structures. In this paper the degradation of the mechanical properties of ASR-affected concrete is studied by comparing the experimental results available in literature. An overview of the macroscopic material modelling approaches related to this aspect is given. Eventual...

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Projects

Projects (3)
Project
The project Green Quays wants to bring nature back to the city. The municipality of Breda (the Netherlands) wants to “green" the city by building a 175-meter-long green quay (canal). The wall of the quay will be designed to favor trees, plants and mosses to grow from the walls, allowing plants and animals to grow. Our scope at TU Delft is to study the most optimal materials and structural systems to favor and develop plant growth within the new brick masonry walls. What type of mortar is more suitable to grow plants? Does adding seeds to the mortar affect the strength? What construction system is more suitable to withstand the growth of the plants? These questions and much more is what we are trying to find out working thrown a detailed plan comprising research, multi-disciplinary cooperation, laboratory and mechanical tests and real-scale mockups. The 3-year project is within the framework of the Urban Innovative Actions (UIA) sponsored by the EU with a budget of 4.7 million Euros. Eight different institutions are taking part on this innovative project. Engineers, architects, biologists, botanists and other professionals work together to find out what conditions are needed to create a rich plant and animal life in the quays.
Archived project