dc.contributor.author | Žvironaitė, Jadvyga | |
dc.contributor.author | Pranckevičienė, Jolanta | |
dc.contributor.author | Kligys, Modestas | |
dc.contributor.author | Balčiūnas, Giedrius | |
dc.contributor.author | Macanovskis, Arturs | |
dc.date.accessioned | 2023-09-18T17:38:30Z | |
dc.date.available | 2023-09-18T17:38:30Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0862-5468 | |
dc.identifier.uri | https://etalpykla.vilniustech.lt/handle/123456789/124635 | |
dc.description.abstract | The potential alkali-silica reactivity (ASR) of various combinations of Portland-composite cements CEM II/A, and Lithuanian aggregates from three gravel deposits are investigated in this work. These aggregates which contain about (2 - 4 %) reactive siliceous rocks (mostly rapid reacting opal and slower reacting flint) could possibly be assigned to Class II-S (potentially alkali-reactive). Two indicators were used to assess the effectiveness of the supplementary cementing materials (SCMs) – slag (S), fly ash (FA) and burnt shale, which are present up to 20 % in the cement: the expansion of the mortar specimens in a hot alkali solution and the intensity of the ASR-caused surface damage in the warm humid environment (60 °C and 100 % RH). The presence of S (~15 %) and FA (10 %, 15 %, 20 %) in the cements decreases the expansion, but no mitigating effect (in the case of S) or even a stimulating effect (in the case of 10 % and 15 % FA) was observed for the ASR-caused surface damage, the effect only occurred in the case of the threshold content (20 %) of FA in the cement. The stimulating effect of burnt shale (~ 18 %) was observed on both the expansion and surface damage. A strong linear correlation (R = 0.95) between the changes in the flexural strength and expansion was observed in the 28-day specimens when tested according to AAR-2.2. | eng |
dc.format | PDF | |
dc.format.extent | p. 76-85 | |
dc.format.medium | tekstas / txt | |
dc.language.iso | eng | |
dc.relation.isreferencedby | Scopus | |
dc.relation.isreferencedby | Science Citation Index Expanded (Web of Science) | |
dc.source.uri | https://www.irsm.cas.cz/materialy/cs_content/2018_doi/Zvironaite_CS_2018_0047.pdf | |
dc.title | Alkali-silica reactivity of Portland-composite cements and gravel aggregates | |
dc.type | Straipsnis Web of Science DB / Article in Web of Science DB | |
dcterms.references | 38 | |
dc.type.pubtype | S1 - Straipsnis Web of Science DB / Web of Science DB article | |
dc.contributor.institution | Vilniaus Gedimino technikos universitetas | |
dc.contributor.institution | Riga Technical University | |
dc.contributor.faculty | Statybos fakultetas / Faculty of Civil Engineering | |
dc.contributor.department | Statybinių medžiagų institutas / Institute of Building Materials | |
dc.subject.researchfield | T 008 - Medžiagų inžinerija / Material engineering | |
dc.subject.researchfield | T 002 - Statybos inžinerija / Construction and engineering | |
dc.subject.vgtuprioritizedfields | SD0202 - Aplinką tausojančios statybinės medžiagos ir technologijos / Low emissions building materials and technologies | |
dc.subject.ltspecializations | L104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies | |
dc.subject.en | alkali-silica reaction | |
dc.subject.en | supplementary cementing materials | |
dc.subject.en | mortar bar testing | |
dc.subject.en | expansion | |
dc.subject.en | surface damage | |
dcterms.sourcetitle | Ceramics-Silikáty | |
dc.description.issue | iss. 1 | |
dc.description.volume | vol. 63 | |
dc.publisher.name | University of Chemistry and Technology | |
dc.publisher.city | Prague | |
dc.identifier.doi | 000462844600008 | |
dc.identifier.doi | 2-s2.0-85064825781 | |
dc.identifier.doi | 10.13168/cs.2018.0047 | |
dc.identifier.elaba | 34652369 | |