bibtype	C - Conference Paper (international conference)
ARLID	0577173
utime	20240402214619.1
mtime	20231029235959.9
SCOPUS	85175976962
DOI	10.1007/978-3-031-44603-0_9
title (primary) (eng)	Changes in Concrete Subjected to Neutron Irradiation
specification	page_count 10 s. media_type P
serial	ARLID cav_un_epca*0577281 ISBN 978-3-031-44602-3 ISSN 2366-2557 title Modern Building Materials, Structures and Techniques : MBMST 2023 page_num 99-108 publisher place Cham name Springer year 2023
keyword	Crack Detection
keyword	Crack Evaluation
keyword	Digital Image Processing
keyword	Concrete Testing
keyword	Neutron Irradiation
author (primary)	ARLID cav_un_auth*0457160 name1 Hlaváč name2 Z. country CZ
author	ARLID cav_un_auth*0254045 name1 Blažek name2 Jan institution UTIA-B full_dept (cz) Zpracování obrazové informace full_dept Department of Image Processing department (cz) ZOI department ZOI country CZ share 20% fullinstit Ústav teorie informace a automatizace AV ČR, v. v. i.
author	ARLID cav_un_auth*0457161 name1 Sirotenko name2 G. country CZ
source	url http://library.utia.cas.cz/separaty/2023/ZOI/blazek-0577173.pdf
cas_special	project project_id StrategieAV21/1 agency AV ČR country CZ ARLID cav_un_auth*0328930 abstract (eng) Nuclear energy has several difficulties connected to the production or storage of the radioactive waste. Long-term operation is a process that may prolong the serviceability of the power plant by 10, 20 or more years. Nevertheless, crucial components as the reactor pressure vessel or its surrounding must be proved before enabling this process. Fast-neutron radiation can have several effects on the concrete biological shield around a nuclear reactor. It can cause changes in the lattice structure of some rock forming minerals, resulting in an increase in volume of several percent and this may lead to cracks between the hardened cement paste and the coarse aggregate grain. Fast neutron radiation is converted in concrete to thermal neutrons which generate secondary gamma radiation and heat whereas gamma generates heat as well. Heat followed by drying causes additional shrinkage of the hardened cement paste. All these affects can be observed via digital images processing after the images have been subjected to segmentation, pre-processing, registration and normalization of the illumination. Twelve small holes were drilled in the concrete slab 50 × 50 × 5 cm and the resulting cores of a diameter 4 cm were removed. They were cleaned and polished then inserted into the LVR-15 Research Nuclear Reactor for one year of irradiation with exposure to a flux of 6 ÷ 7 × 1011 neutrons·cm−2s−1. The samples were measured and photographed using the Vertex measuring system before and after irradiation and they were examined to find evidence of any visual changes. The work on digital image processing began in April 2023 and the first outcomes should be available at the end of the year 2023. action ARLID cav_un_auth*0457165 name International Conference “Modern Building Materials, Structures and Techniques” (MBMST 2023) /14./ dates 20231005 mrcbC20-s 20231006 place Vilnius country LT RIV JD FORD0 20000 FORD1 20200 FORD2 20204 reportyear 2024 num_of_auth 3 presentation_type PR inst_support RVO:67985556 permalink https://hdl.handle.net/11104/0351127 cooperation ARLID cav_un_auth*0394547 name Centrum výzkumu Řež, s.r.o. cooperation ARLID cav_un_auth*0353109 name Charles University in Prague, Faculty of Mathematics and Physics, Prague country CZ confidential S arlyear 2023 mrcbU02 C mrcbU14 85175976962 SCOPUS mrcbU24 PUBMED mrcbU34 WOS mrcbU63 cav_un_epca*0577281 Modern Building Materials, Structures and Techniques : MBMST 2023 Springer 2023 Cham 99 108 978-3-031-44602-3 Lecture Notes in Civil Engineering 392 2366-2557