Classification of fine natural aggregates from Poland depending on alkali reaction according to the procedures of the General Directorate for National Roads and Motorways

• Autorzy: Zapała-Sławeta Justyna , Zięba Kamil

Identyfikatory

DOI

10.12913/22998624/207025

• Języki publikacji: EN

Abstrakty

EN

The alkali-silica reaction (ASR) poses a serious threat to the durability of concrete structures. Although the mechanism of this reaction was described as early as the 1940s, assessing the potential alkali reactivity of aggregates is still a research and engineering challenge. This article discusses the classification of the alkali reactivity of fine natural aggregates based on the results obtained by methods PB/1/18 (accelerated) and PB/2/18 (long-term), developed in accordance with the guidelines of the General Directorate for National Roads and Motorways. In the experimental part, the authors analysed fine natural aggregates previously used in concrete structures that showed no signs of damage due to ASR. The study confirmed the presence of reactive forms of silica, including deformed and polycrystalline quartz. Significant differences in alkali reactivity classification results were shown depending on the method used, confirming the limitations of the accelerated method and the possibility of erroneous results. It emphasised the need for careful interpretation of short-term test results and the need for further refinement of aggregate reactivity assessment methods to achieve better correlation with long-term methods, which more accurately reflect the service conditions of concrete

Słowa kluczowe

EN

alkali-silica reaction; ASR; fine aggregates; concrete durability; reactivity classification

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2025
• Tom: Vol. 19, no. 9
• Strony: 162--170
• Opis fizyczny: Bibliogr. 25 poz., fig., tab.

Twórcy

autor

Zapała-Sławeta Justyna

• Faculty of Civil Engineering and Architecture, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland

• https://orcid.org/0000-0001-6322-152X

autor

Zięba Kamil

• Faculty of Civil Engineering and Architecture, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland
• Centrum Technologiczne Betotech sp. z o.o., ul. Roździeńskiego 14, 41-306 Dąbrowa Górnicza, Poland

• https://orcid.org/0009-0008-4465-6868

Bibliografia

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