Projects / Programmes source: ARIS

Sensor technologies in diagnostics and monitoring of cultural heritage buildings

Research activity

Code Science Field Subfield
2.21.00  Engineering sciences and technologies  Technology driven physics   

Code Science Field
T000  Technological sciences   

Code Science Field
1.03  Natural Sciences  Physical sciences 
built heritage, structural and grout injection, porosity, temperature and moisture sensors, energy efficiency
Evaluation (rules)
source: COBISS
Researchers (24)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  31818  PhD Andreja Abina  Chemistry  Researcher  2017 - 2020  60 
2.  20188  PhD Gaber Begeš  Metrology  Researcher  2019  281 
3.  22480  PhD Samo Beguš  Metrology  Researcher  2017 - 2020  169 
4.  10379  PhD Violeta Bokan Bosiljkov  Civil engineering  Researcher  2017 - 2020  582 
5.  15189  PhD Vlatko Bosiljkov  Civil engineering  Researcher  2017 - 2020  426 
6.  33229  PhD Patricia Cotič  Technology driven physics  Researcher  2017 - 2018  53 
7.  17449  Franci Čepon    Technical associate  2017 - 2020  38 
8.  03939  PhD Janez Dolinšek  Physics  Researcher  2017 - 2020  767 
9.  11892  PhD Zvonko Jagličić  Physics  Head  2017 - 2020  721 
10.  08274  PhD Vojko Jazbinšek  Physics  Researcher  2017 - 2020  199 
11.  20037  PhD Marjeta Kramar Fijavž  Mathematics  Researcher  2017 - 2020  181 
12.  33298  PhD Jure Kranjec  Metrology  Technical associate  2019 
13.  36336  PhD Mitja Krnel  Physics  Researcher  2019 - 2020  77 
14.  37464  PhD Janez Lužnik  Physics  Researcher  2019 - 2020  24 
15.  50307  PhD Andreja Padovnik  Civil engineering  Beginner researcher  2017 - 2020  152 
16.  32578  PhD Uroš Puc  Electronic components and technologies  Researcher  2017 - 2020  69 
17.  18280  PhD Igor Pušnik  Metrology  Researcher  2019  346 
18.  39667  Slaven Ranogajec    Technical associate  2018 - 2020 
19.  35478  PhD Andraž Rešetič  Physics  Researcher  2018 - 2020  41 
20.  31255  PhD Petra Štukovnik  Civil engineering  Researcher  2018 - 2020  91 
21.  20189  PhD Marko Tkalčič  Systems and cybernetics  Researcher  2019  204 
22.  26471  PhD Stanislav Vrtnik  Physics  Researcher  2017 - 2020  184 
23.  11035  PhD Aleksander Zidanšek  Physics  Researcher  2017 - 2020  357 
24.  31981  PhD Vincencij Žužek  Metrology  Researcher  2018 - 2020  34 
Organisations (5)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0101  Institute of Mathematics, Physics and Mechanics  Ljubljana  5055598000  19,657 
2.  0106  Jožef Stefan Institute  Ljubljana  5051606000  88,610 
3.  0792  University of Ljubljana, Faculty of Civil and Geodetic Engineering  Ljubljana  1626981  26,315 
4.  1538  University of Ljubljana, Faculty of Electrical Engineering  Ljubljana  1626965  27,615 
5.  2338  Jožef Stefan International Postgraduate School  Ljubljana  1917544  11,294 
Heritage assets are of important historical value and give evidence about the development of culture in a given area. They encompass the field of artistic heritage, movable and immovable assets including built heritage, historical monuments, frescoes and assets of the cultural environment. The proposed project will focus on renovation and/or restoration of built heritage that encompasses buildings in Slovenia from the Romanesque period to the modernism from the beginning of 20th century. For the renovation/restoration process, energy rehabilitation of built heritage is often required in addition to structural (re-joining bricks, refilling voids between the wall's leafs) and non-structural (establish the uniformity of wall paintings) injections as many buildings are still in use.  Incomplete or missing building plans, as well as legal constraints on the interventions on structural elements of built heritage are the most common obstacles in the renovation process of built heritage. Moreover, inappropriate restoration interventions on built heritage are often responsible for the damage and decay of the material.  Hence, the proposed project aims in linking the civil engineering and restoration field with non-destructive techniques of imaging, new sensors and the results of information technology. We propose to: 1) Imaging of building elements before renovation with non-destructive techniques such as georadar, thermography and ultrasound, and image fusion in order to obtain a single, more reliable image of the investigated element.  2) Development of the multi-spot measurement system for measuring the heat flux through the building’s walls for an accurate and rational proposal for energy rehabilitation. 3) Development of miniature sensors that will be mixed into injection mixtures for monitoring the infiltration of the injection grouts. The sensors will be wirelessly connected to the main unit in order to obtain data about the sensors location and the temperature and moisture at their location. With this data we will be able to control the successfulness of the renovation during the procedure itself and if needed, make suitable adjustments.  4) The pore size distribution in new and existing injection mixtures will be determined in the laboratory using nuclear magnetic resonance. We have proved that the porosity is one of the most important properties that determine the compatibility of the injection mixture with the original material. 5) Development and application of terahertz spectroscopy for on site porosity determination. Terahertz spectroscopy does not require the sample to be saturated with water as needed when using nuclear magnetic resonance. 6) The efficiency of the renovation process will be determined using the same imaging methods as described in 1). Two buildings of built heritage, both properties of University of Ljubljana, and one damaged stone masonry building in Posočje-region in Slovenia will be considered for testing. The proposed project enables an optimization and control of the interventions on built heritage. With this procedure, the required amount of used material for the renovation can be reduced, which contributes to the preservation of natural resources.  The project proposal refers to the following areas of Slovenia’s Smart Specialisation Strategy (S4, Sept. 2015):  1) Healthy working and living environment -) Smart buildings and homes, including wood chain -) Advanced materials and products, 2) Natural and traditional resources for the future -) Sustainable tourism. At the end of the project, courses for restorers in Slovenia will be prepared and guidelines for their work will be published on the project website.
Significance for science
New injection mixtures for structural and non-structural strengthening of buildings of heritage assets with well defined physical properties will have an impact in the field of material science. The development of a new method for the measurement of porosity with terahertz spectroscopy and the production of miniature sensors that will be inbuilt in the injection mixtures will have an important impact in the field of sensor technologies and implementation of IT (informational technology) in civil engineering. New numerical methods for the fusion of images, acquired with existing and new imaging methods, will have an original contribution in the field of numerical methods with the use in civil engineering and in medicine.
Significance for the country
The guidelines and new building elements, in accordance to the requirements for minimal interventions on the building, will be prepared for the improvement of energy efficiency of two buildings of heritage assets, both property of University of Ljubljana.  Based on the knowledge and experiences that will be gathered during the project realization, the seminars for Slovenian restorers will be prepared. On the project's web page the guidelines for restores will be prepared.  The production of the measurement system for multispot heat flow measurement could lead to a new spin-off company.
Most important scientific results Interim report, final report
Most important socioeconomically and culturally relevant results Interim report, final report
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