scholarly journals Analysis of the Moisture Content of Masonry Walls in Historical Buildings Using the Basement of a Medieval Town Hall as an Example

2017 ◽  
Vol 172 ◽  
pp. 363-368 ◽  
Author(s):  
Anna Hoła ◽  
Zygmunt Matkowski ◽  
Jerzy Hoła
Keyword(s):  
Moisture Content ◽  
Masonry Walls ◽  
Historical Buildings ◽  
Town Hall

scholarly journals The influence of the moisture content in historical masonry walls on the load bearing capacity

2018 ◽  
Vol 49 ◽  
pp. 00100
Author(s):  
Monika Siewczynska ◽  
Barbara Ksit
Keyword(s):  
Moisture Content ◽  
Bearing Capacity ◽  
Actual State ◽  
Masonry Walls ◽  
Historical Buildings ◽  
Load Bearing Capacity ◽  
Reliable Determination ◽  
Load Bearing ◽  
Historical Masonry

The moisture content in historical masonry walls, particularly on the ground floor, caused by i.e. lack of damp insulation, is a phenomenon of common occurrence. It is usually analysed in terms of mycological changes, thermal insulation and frost damage. The paper discusses the influence of the increased moisture content on the weight and load bearing capacity of the structure. The determination of moisture content in masonry elements, performed during the inspection of the building, provides information from which an increase in the structure's weight can be defined. Reliable tests for the moisture content and compressive strength of masonry and mortar components are invasive, and the number of testing in historical buildings should be limited to the minimum necessary to preserve their vintage nature. As a result, the received overall picture of the work of masonry may not be consistent with its actual state since historical buildings could have been rebuilt or repaired, and consequently, contain masonry conversions made of various materials with different properties. Absorbability can serve here as an example as it is a factor that disrupts a reliable determination of load bearing capacity values of masonry structures. The article attempts to determine the change in load bearing capacity of a moist masonry structure compared to the original - in the air-dry state - for various types of historical masonry and mortar components. The main influence analysed was due to capillary action, whereas the effect of other sources of moisture, i.e. salinity, was excluded.

scholarly journals Monitoring of Thermal and Moisture Processes in Various Types of External Historical Walls

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 505 ◽  
Author(s):  
Dariusz Bajno ◽  
Lukasz Bednarz ◽  
Zygmunt Matkowski ◽  
Krzysztof Raszczuk
Keyword(s):  
Masonry Wall ◽  
Design Guidelines ◽  
Masonry Walls ◽  
Historical Buildings ◽  
Wall Structures ◽  
Mutual Comparison ◽  
Energy Audits ◽  
Biological Corrosion ◽  
Comfort Parameters ◽  
The Impact

In order to create and make available the following: Design guidelines, recommendations for energy audits, data for analysis and simulation of the condition of masonry walls susceptible to biological corrosion, deterioration of comfort parameters in rooms, or deterioration of thermal resistance, the article analyzes various types of masonry wall structures occurring in and commonly used in historical buildings over the last 200 years. The summary is a list of results of particular types of masonry walls and their mutual comparison. On this basis, a procedure path has been proposed which is useful for monitoring heat loss, monitoring the moisture content of building partitions, and improving the hygrothermal comfort of rooms. The durability of such constructions has also been estimated and the impact on the condition of the buildings that have been preserved and are still in use today was assessed.

scholarly journals The Problem of Moisture Content in Historical Buildings Based on a Classicist Tenement House at 14A, Śląska Street in Gubin

2020 ◽  
Vol 30 (2) ◽  
pp. 80-91
Author(s):  
Bartosz Michalak ◽  
Oliwia Graczyk
Keyword(s):  
World War Ii ◽  
Moisture Content ◽  
Historical Buildings ◽  
World War ◽  
Tenement House ◽  
Moisture Effects ◽  
History Of ◽  
The Military ◽  
The Town ◽  
Made In

AbstractDiagnostics and mitigation of excessive moisture effects are some of the most frequent problems in historical buildings. In this article, an attempt was made to measure the moisture content of construction elements in the historical tenement house in Gubin. It is the largest town in the Krosno Poviat, in the area of the Lubuskie Voivodeship. The town suffered from military actions during World War II whereby approximately 90% of its urban development was destroyed. The tenement house at 14A, Śląska Street is one of the more well-preserved buildings, made in the classicist style with characteristic historical features. The whole history of the building is unknown but there are freemasonry symbols on the elevation, and probably the Military Police had its headquarters there after 1945.

scholarly journals Seismic retrofit of historical masonry walls by means of natural basalt fiber strips system (BFRP). Pre-modern concepts and innovative materials

2018 ◽  
Vol 242 ◽  
pp. 01014
Author(s):  
Giacomo Tempesta
Keyword(s):  
Basalt Fiber ◽  
Seismic Retrofit ◽  
Design Approach ◽  
Masonry Walls ◽  
Masonry Structures ◽  
Historical Buildings ◽  
The Past ◽  
Structural Capacity ◽  
Innovative Materials ◽  
Historical Masonry

The paper deals with the design approach for post-seismic interventions aimed at safeguarding historical buildings in seismic areas, consisting prevalently of masonry structures that, by type of technology, even if within exceptional cases respectful of “the rule of art”, do not guarantee the compliance with the resources necessary for the demand for resilient and structural capacity. In particular, the paper deals with the issue of applying technologies that use constructive ideas and concepts of the past or, as they are usually called pre-modern, reinterpreting them through the use of innovative and extremely performing materials.

Non Linear Fem Modelling for the Design of Openings in Masonry Walls

2017 ◽  
Vol 747 ◽  
pp. 44-51
Author(s):  
Daniel Meloni ◽  
Barbara de Nicolo
Keyword(s):  
Masonry Walls ◽  
Masonry Structures ◽  
Structural Interventions ◽  
Existing Buildings ◽  
Historical Buildings ◽  
Concrete Frames ◽  
Structural Intervention ◽  
Existing Building ◽  
Italian Regions ◽  
Building Safety

Countries like Italy have to face the constant issue of preserving and renewing existing buildings, both for the sake of conservation of the architectural and monumental heritage and due to the need of requalification and reuse. Considering the seismic hazard of most of Italian regions, structural interventions need to be carefully evaluated since National Codes don’t allow any sort of weakening of buildings and conversely regard any structural intervention as an opportunity to improve existing building safety. Most of existing and historical buildings in Italy are masonry structures, whose functional and architectonical requalification usually consists of new openings in masonry walls, but, according to the above mentioned principles, these modifications need to be designed at least without significantly affecting the pre-existent structural behavior. Thus, steel or reinforced concrete frames are to be designed in order to restore the previous conditions of masonry integrity. In this paper FEM analyses are performed and discussed in order to achieve this goal.

scholarly journals Suitability of time domain reflectometry (TDR) for moisture content monitoring in historic building walls

2019 ◽  
Vol 282 ◽  
pp. 02051
Author(s):  
Teresa Stingl Freitas ◽  
Ana Sofia Guimarães ◽  
Vasco Peixoto de Freitas
Keyword(s):  
Moisture Content ◽  
Wall Thickness ◽  
Building Materials ◽  
Moisture Transfer ◽  
Correct Diagnosis ◽  
Time Domain Reflectometry ◽  
Efficiency Evaluation ◽  
Historical Buildings ◽  
Intervention Measures ◽  
Building Walls

Measuring moisture content in building materials is crucial for the correct diagnosis of buildings pathologies, for the adoption of appropriate intervention measures and for the efficiency evaluation of the treatment solutions applied. There are several different techniques available to measure and monitoring the moisture content in building materials. However, it still remains a great challenge to perform those studies in historical buildings, since minor-destructive techniques are required. Furthermore, if continuous moisture content readings in space are desired, in order to study the moisture transfer phenomenon along the wall thickness, the challenge is even greater. The TDR technique is a relatively new method for measurement of moisture content in building materials with a set of unexplored potentialities capable of satisfying the two mentioned requirements. In this paper, the suitability of the TDR technique to obtain continuous cross-section moisture content profiles has started to be tested on two limestone prototype walls. Each wall was equipped with four TDR probes, designed practically with the same length of the wall thickness and placed at different heights. All the necessary equipment, installation steps, and difficulties are here presented. The preliminary results suggest that the TDR technique is suitable for moisture content monitoring in consolidated porous building materials.

scholarly journals Multi-Leaf Masonry Walls with Full, Damaged and Consolidated Infill: Experimental and Numerical Analyses

2017 ◽  
Vol 747 ◽  
pp. 488-495 ◽  
Author(s):  
Ivano Aldreghetti ◽  
Daniele Baraldi ◽  
Giosuè Boscato ◽  
Antonella Cecchi ◽  
Lorenzo Massaria ◽  
...  
Keyword(s):  
Finite Element ◽  
Comparative Analysis ◽  
Structural Complexity ◽  
Experimental Tests ◽  
Masonry Wall ◽  
Research Community ◽  
Masonry Walls ◽  
Historic Buildings ◽  
Structural Elements ◽  
Historical Buildings

Multi-leaf masonry walls constitute the construction typology most widely adopted in historic buildings. This aspect, together with the intrinsic structural complexity, heterogeneity and irregularity, directs the present research towards a topic not yet sufficiently investigated by the research community of architects and civil engineers. In this paper, the case of multi-leaf masonry wall has been investigated, and with the aim of reproducing historical buildings structural elements, three different typologies of multi-leaf masonry walls have been considered: (i) full infill, (ii) damaged infill, (iii) consolidated infill. A comparative analysis has been performed and results of experimental tests have been compared with numerical ones obtained by means of Finite Element (FE) models.

scholarly journals Analytical meanders of selected systems for thermo-renovation of historical buildings

2018 ◽  
Vol 49 ◽  
pp. 00062 ◽  
Author(s):  
Barbara Ksit ◽  
Mariusz Gaczek
Keyword(s):  
Moisture Content ◽  
Time Interval ◽  
Historical Buildings ◽  
High Moisture Content ◽  
High Moisture ◽  
Heat Protection ◽  
Closed Systems ◽  
Vertical Partitions ◽  
And Diffusion ◽  
Very High

The article contains an analysis of selected systems for thermorenovation of vertical partitions in protected buildings. Historical buildings often require thermo-renovation, but in practice their "insulation" can be applied only internally on partitions without decorations. Internal thermorenovation methods can be classified according to heat exchange and moisture transport. For the purpose of this paper, the methods were analysed in terms of diffusion-open and diffusion-closed systems, and compared in a multi-variant aspect. The calculations were made assuming a wall with the moisture content up to 3%, a wall with the very high moisture content up to 11%, and for a wet wall with a constant inflow of water due to capillary action. They attempted to evaluate the effectiveness of various thermo-modernisation treatments in building partitions in the aspect of protection against permanent moisture growth, mould development and improvement of their overall heat protection, considering the 8-year time interval. Several different sets of materials were included in a multivariate analysis, as well as various scenarios of the possible effects of their use. The paper is summarised with conclusions regarding the effectiveness and risk related to the application of different internal methods of thermo-renovation of partitions.

Evaluation of Existing Moisture Content in Brick for Hygrothermal Models in the Rehabilitation of Mass Masonry Walls

Masonry 2018 ◽  
2018 ◽  
pp. 1-12
Author(s):  
Rex A. Cyphers ◽  
Annette M. Cyphers ◽  
Jodi M. Knorowski ◽  
Ashley M. Skertic
Keyword(s):  
Moisture Content ◽  
Masonry Walls
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