dc.contributor.author | Kudžma, Andrius | |
dc.contributor.author | Plioplys, Linas | |
dc.contributor.author | Antonovič, Valentin | |
dc.contributor.author | Stonys, Rimvydas | |
dc.contributor.author | Gribniak, Viktor | |
dc.date.accessioned | 2023-09-18T16:21:06Z | |
dc.date.available | 2023-09-18T16:21:06Z | |
dc.date.issued | 2022 | |
dc.identifier.uri | https://etalpykla.vilniustech.lt/handle/123456789/113395 | |
dc.description.abstract | Alumina cement (AC) based refractory concretes are the primary building materials for steel, cement, glass, ceramics, and chemical industries. Those advanced materials are efficient at high operation temperatures (up to 1500 °C), conforming to thermal shock and mechanical and slag resistance requirements. For these purposes, fine-grade or ultra-fine powders partially replace the cement. However, that increases the material density and, depending on the first heating cycle regime, the evaporated steam pressure can cause cracking and even explosive spalling of the concrete. The coarse aggregates and temperature-melting fibers can regulate the water evaporation process—the melted fibers form micro-channels, allowing excessive water removal from the heated material. However, the concrete curing conditions also affect the hydration products’ structure (density) and chemical composition, altering the water removal kinetics from the refractory material. This investigation focuses on the hardening conditions’ effect on the hydration process and explosive spalling resistance of the AC refractory concretes. The research object is the refractory concrete with a 130 MPa target compressive strength and 7wt% of AC. The alternative mixture contains polypropylene fibers (0.1wt%). The cylinder samples were cured at different temperatures, representing “normal” (20 °C), “summer” (35 °C), and “winter” (10 °C) conditions. The test results demonstrate the fiber efficiency in preventing the spalling failure characteristic of the samples produced without fibers. On the other hand, the curing temperature was the essential parameter, affecting the water removal kinetics of the refractory material with fibers—the “winter” concrete samples tend to explosive spalling due to the formed hydrates. | eng |
dc.format | PDF | |
dc.format.extent | p. 1-6 | |
dc.format.medium | tekstas / txt | |
dc.language.iso | eng | |
dc.relation.ispartofseries | Proceedings of structural engineering and construction vol. 9, iss. 1 2644-108X | |
dc.relation.isreferencedby | Scopus | |
dc.rights | Laisvai prieinamas internete | |
dc.source.uri | https://www.isec-society.org/ISEC_PRESS/EURO_MED_SEC_04/xml/MAT-27.xml | |
dc.source.uri | https://talpykla.elaba.lt/elaba-fedora/objects/elaba:133555523/datastreams/MAIN/content | |
dc.title | Curing temperatures effect on explosive spalling in alumina cement-based concretes | |
dc.type | Straipsnis Scopus DB / Article in Scopus DB | |
dcterms.accessRights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Theme: State-of-the-art materials and techniques in structural engineering and construction. Chapter 3. Concrete and concrete products | |
dcterms.license | Creative Commons – Attribution – NonCommercial – NoDerivatives – 4.0 International | |
dcterms.references | 15 | |
dc.type.pubtype | S2 - Straipsnis Scopus DB / Scopus DB article | |
dc.contributor.institution | Vilniaus Gedimino technikos universitetas | |
dc.contributor.faculty | Statybos fakultetas / Faculty of Civil Engineering | |
dc.contributor.department | Statybinių medžiagų institutas / Institute of Building Materials | |
dc.contributor.department | Statinių ir tiltų konstrukcijų institutas / Institute of Building and Bridge Structures | |
dc.subject.researchfield | T 008 - Medžiagų inžinerija / Material engineering | |
dc.subject.studydirection | F03 - Medžiagų technologijos / Materials technology | |
dc.subject.vgtuprioritizedfields | SD0101 - Pažangios statinių konstrukcijos / Smart building structures | |
dc.subject.ltspecializations | L104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies | |
dc.subject.ltspecializations | C101 - Civilinės inžinerijos mokslo centras / | |
dc.subject.en | refractory concrete | |
dc.subject.en | tests | |
dc.subject.en | fibers | |
dc.subject.en | material | |
dc.subject.en | compressive strength | |
dcterms.sourcetitle | Proceedings of the fourth European and Mediterranean structural engineering and construction conference, Leipzig, Germany, June 20 - June 25, 2022 | |
dc.publisher.name | ISEC Press | |
dc.publisher.city | Fargo | |
dc.identifier.doi | 10.14455/ISEC.2022.9(1).MAT-27 | |
dc.identifier.elaba | 133555523 | |