dc.contributor.author | Rutkauskas, Aurimas | |
dc.contributor.author | Nagrockienė, Džigita | |
dc.contributor.author | Skripkiūnas, Gintautas | |
dc.date.accessioned | 2023-09-18T17:01:41Z | |
dc.date.available | 2023-09-18T17:01:41Z | |
dc.date.issued | 2017 | |
dc.identifier.uri | https://etalpykla.vilniustech.lt/handle/123456789/119091 | |
dc.description.abstract | Alkali-silica reaction is one of the chemical reactions which have a significant influence for durability of concrete. During alkali and silica reaction, silicon located in aggregates of the concrete, reacts with high alkali content. This way in the micropores of concrete is forming hygroscopic gel, which at wet environment, expanding and slowly but strongly destroying concrete structures. The goal of this paper- to determine the influence of cement type on alkali-silica reaction of mortars with crushed gravel. In the study crushed gravel with fraction 4/16 mm was used and four types of cements tested: CEM I 42.5 R; CEM I 42.5 SR; CEM II/A-S 42.5; CEM II/A-V 52.5. This study showed that crushed gravel is low contaminated on reactive particles containing of amorphous silica dioxide. The expansion after 14 days exceed 0.054 %, by RILEM AAR-2 research methodology (testing specimen dimension 40×40×160 mm). Continuing the investigation to 56 days for all specimens occurred alkaline corrosion features: microcracking and the surface plaque of gel. The results showed that the best resistance to alkaline corrosion after 14 days was obtained with cement CEM I 42.5 SR containing ash additive, and after 56 days with cement CEM II/A-V 52.5 containing low alkali content. The highest expansion after 14 and 56 days was obtained with cement CEM I 42.5 R without active mineral additives. | lit |
dc.format.extent | p. 143 | |
dc.format.medium | tekstas / txt | |
dc.language.iso | eng | |
dc.source.uri | https://drive.google.com/file/d/0BzKB_2o91fKsd2V3cXROTG1pZ0U/view | |
dc.subject | SD03 - Pažangios statybinės medžiagos, statinių konstrukcijos ir technologijos / Innovative building materials, structures and techniques | |
dc.title | Cement type influence on alkali-silica reaction in concrete with crushed gravel aggregate | |
dc.type | Kitos konferencijų pranešimų santraukos / Other conference presentation abstracts | |
dcterms.references | 0 | |
dc.type.pubtype | T3 - Kitos konferencijos pranešimo tezės / Other conference presentation abstracts | |
dc.contributor.institution | Vilniaus Gedimino technikos universitetas | |
dc.contributor.faculty | Statybos fakultetas / Faculty of Civil Engineering | |
dc.subject.researchfield | T 008 - Medžiagų inžinerija / Material engineering | |
dc.subject.ltspecializations | L104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies | |
dc.subject.lt | Alkali-aggregate reaction | |
dc.subject.lt | Cement | |
dc.subject.lt | Reactivity | |
dc.subject.lt | Alkalis | |
dc.subject.lt | Hygroscopic gel | |
dc.subject.lt | Expansion | |
dcterms.sourcetitle | IOP Conference Series: Materials Science and Engineering. Vol. 251. 3rd International Conference on Innovative Materials, Structures and Technologies (IMST 2017), 27–29 September 2017, Riga, Latvia : abstracts | |
dc.publisher.name | IOP Publishing | |
dc.publisher.city | Bristol | |
dc.identifier.elaba | 24637672 | |