scholarly journals Case Study of Ferro Cement Coating Technique on Masonry Walls

2014 ◽  
Vol 7 (is5) ◽  
pp. 9-9
Author(s):  
A. Sujatha
Keyword(s):  
Masonry Walls ◽  
Coating Technique

Durability of a ventilated stone facade: A case study of a limestone facade affected by the corrosion of the anchorage system

2020 ◽  
Author(s):  
Vera Pires de Almeida Ribeiro
Keyword(s):  
Chemical Characterization ◽  
Masonry Walls ◽  
Concrete Walls ◽  
Reinforced Concrete Walls ◽  
Correct Execution ◽  
Anchoring System ◽  
Ventilated Facade ◽  
Non Destructive

<p>The mechanical behavior of a natural stone ventilated facade is inevitably based on the correct execution of both anchoring elements, stone cladding and enclosure support, either with brick masonry walls or reinforced concrete walls. In the case studied in the present work, the origin of the damages on the facade of a building located in Lisbon has been analyzed, where stone detachments were starting to occur. This enclosure is a ventilated facade cladded with Portuguese limestone Lioz slabs. Non-destructive borescope analysis of the metallic anchoring system employed was performed, as well as X-Ray fluorescence laboratory analysis (FRX) for chemical characterization of the anchoring material. Results obtained demonstrated the problem cause on the stone facade due to incorrect metallic anchoring selection and poor execution combined with stress corrosion effect, especially for slabs with larger dimensions.</p>

Shrinkage in Concrete Masonry Walls: Case Study

1987 ◽  
Vol 1 (2) ◽  
pp. 103-119 ◽  
Author(s):  
S. G. Mattar ◽  
T. R. Morstead
Keyword(s):  
Masonry Walls ◽  
Concrete Masonry ◽  
Concrete Masonry Walls

The Reinforcement, Reconstruction and the Conservation of Historical Masonry Walls - Case Study

2017 ◽  
Vol 747 ◽  
pp. 550-557 ◽  
Author(s):  
Krzysztof Ałykow ◽  
Magdalena Napiórkowska-Ałykow
Keyword(s):  
Shear Strength ◽  
Masonry Walls ◽  
Original Material ◽  
Masonry Structures ◽  
Historical Masonry ◽  
City Walls ◽  
Lower Silesia

In this article, the authors presented two examples of the reconstruction of medieval masonry ramparts in Nowogrodziec and Gryfów Śląski (Lower-Silesia, Poland). The authors elaborated a schedule for the reinforcement and the reconstruction of permanent medieval monastery ruins in Nowogrodziec and a way to reinforce the medieval city walls in Gryfów. [1, 2]. The authors have also proposed the reinforcement by using "Reticolatus" system. The "Reticolatus" system, developed in Italy for strengthening 3-layer walls against seismic influence, could be used separately or in addition to other techniques of reinforcement, especially in irregular masonry structures. The proposed technique allows for increasing compressive and shear strength. This method also allows for using the original material of the building with preservation and protection of historical, monumental and architectural character of the reinforcement construction.

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.

scholarly journals Integrated Investigation of Built Heritage Monuments: The Case Study of Paphos Harbour Castle, Cyprus

Heritage ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 1-14
Author(s):  
Vasiliki Lysandrou ◽  
Athos Agapiou ◽  
Manolis Ioannides ◽  
Nikolaos Kantiranis ◽  
Eleftherios Charalambous ◽  
...  
Keyword(s):  
Image Processing ◽  
Construction Materials ◽  
Masonry Walls ◽  
Built Heritage ◽  
Processing Techniques ◽  
Small Parts ◽  
Non Destructive ◽  
Non Destructive Techniques ◽  
Destructive Methods

The state of preservation of built heritage monuments is often evaluated by means of several destructive techniques, which are mainly focused on the analysis of small parts of the monuments’ construction materials. The necessary sampling for the accomplishment of these destructive analyses is usually restricted to confined parts of a monument, since monuments are usually under protective legislation, and therefore only indicative of larger areas. Current research attempts to enhance the results of provided by destructive methods, using non-destructive image processing techniques. Towards this end, the potential use of image processing based on rectified images is examined, along with material sampling and laboratory analyses as part of a multi-disciplinary methodology for the investigation of Paphos (Cyprus) Harbour Castle. This approach has been adopted in order to map the degradation patterns observed on the monument’s masonry walls, minimizing destructive methods and attempting to visualize the results of the monument as a whole. The combination of both analytical and non-destructive techniques resulted in the acquisition of large amounts of information, permitting the evaluation of applied non-destructive techniques for the study of the deterioration present on a monument’s external surfaces. This approach led to the assessment of the overall state of preservation of the masonry walls of the structure in an extended scale covering all external façades in a semi-automatic way.

scholarly journals Application of Chemical Grouting as an Option of Removing Soil Moisture - a Case Study in the Reconstruction of the Church

2015 ◽  
Vol 10 (2) ◽  
pp. 93-102 ◽  
Author(s):  
Jana Katunská ◽  
Dušan Katunský
Keyword(s):  
Masonry Walls ◽  
Chemical Methods ◽  
Small Church ◽  
Chemical Grouting ◽  
Chemical Pressure ◽  
Pressure Chemical ◽  
Two Stages ◽  
The Town ◽  
The Church

Abstract The article provides an analysis of removing moisture from the soil masonry walls. The chemical pressure insulation may be considered as one of the alternatives. This paper describes the chemical waterproofing and points to a case study, which is a small church in the town of Košice. Renovation of the church took place in two stages, made using pressure chemical insulation for chemical grouting of envelope masonry. The appropriateness and effectiveness of the applied chemical methods can be seen in the conclusions of this contribution.

Rehabilitation of Masonry Buildings with Fibre Reinforced Mortar: Practical Design Considerations Concerning Seismic Resistance

2021 ◽  
Vol 898 ◽  
pp. 1-7
Author(s):  
Ingrid Boem ◽  
Natalino Gattesco
Keyword(s):  
Seismic Vulnerability ◽  
Seismic Resistance ◽  
Masonry Walls ◽  
Masonry Buildings ◽  
Historic Masonry ◽  
Collapse Mode ◽  
Practical Design ◽  
Out Of Plane ◽  
Historical Masonry

Historic masonry buildings experience a high seismic vulnerability: innovative intervention strategies for strengthening, based on the use of fibre-based composite materials are gradually spreading. In particular, the coupling of fibre-based materials with mortar layers (Fibre Reinforced Mortar technique - FRM) evidenced a good chemical and mechanical compatibility with the historical masonry and proved to be effective for the enhancement of both in-plane and out-of-plane performances of masonry, contrasting the opening of cracks and improving both resistance and ductility. The resistant mechanisms that arise in FRM strengthened masonry walls subjected to in-plane horizontal actions are analyzed in the paper and a practical design approach to evaluate their performances is illustrated, evidencing the dominant collapse mode at the varying of the masonry characteristics. Some masonry walls are analyzed numerically and analytically, as “case study”.

Performance of Masonry Walls: Case Study in Kuwait

1992 ◽  
Vol 4 (1) ◽  
pp. 77-90 ◽  
Author(s):  
Adnan M. Al‐Adeeb ◽  
Hayfaa A. Al‐Mudhaf
Keyword(s):  
Masonry Walls

scholarly journals Renovating an Old Building for Cultural Use: A Study in Unreinforced Masonry

1995 ◽  
Author(s):  
Richard Ebeltoft ◽  
Keyword(s):  
Unreinforced Masonry ◽  
Structural Defects ◽  
Masonry Walls ◽  
Masonry Building ◽  
Central Cities ◽  
Cultural Arts ◽  
User Groups ◽  
And Performance ◽  
Unreinforced Masonry Building

This paper examines the issue of renovation of buildings in the urban fabric of older central cities. It does so with a the case study of one such building. The building under study is a church that was originally constructed in the early 1900's and was in use into the eighties. Since then, building has been abandoned and fallen into disrepair. The building was renovated for use as a cultural arts and performance center for small user groups. It was an unreinforced masonry building with many structural defects that had to be overcome before any use could be made of the structure. The foundations in the basement were badly deteriorating. It had high spaces with tall unreinforced masonry walls and a truss roof that was in distress.

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