Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Potential reactivity to alkalis of Portuguese volcanic aggregates for concrete
In Portugal, volcanic rocks are commonly used as concrete aggregates for concrete in Madeira and Azores Islands and in a lesser extent in the Mainland. Nonetheless, the information about the potential alkali-silica reactivity of Portuguese volcanic rocks is rather scarce. In order to ful ll this lack of information and in the scope of a Portuguese research project, four volcanic aggregates from the Portuguese Mainland and Madeira Archipelago were investigated. For this purpose petrographic characterization (polarizing microscopy complemented by bulk chemical analysis and scanning electron microscopy with energy dispersive detector) along with expansion laboratory tests were carried out. In this paper, results of the investigation are presented aiming to establish a possible correlation among the results from the used methods. ; 55-58pp ; The authors are thankful to Fundação para a Ciência e Tecnologia (FCT) for the financial support concerning the Project IMPROVE (Ref: PTDC/ECM/115486/2009). The authors afiliated in the CGUP are thankful to FCT for the funding of the Strategic Project Pest-OE/CTE/UI0039/2014. The author V. Ramos is grateful to FCT towards the financial support of her PhD studies (Ref:SFRH/BD/47893/2008) ; 5 ; DM/NMM ; Urban Geology, Sustainable Planning and Landscape Exploitation
Potential reactivity to alkalis of Portuguese volcanic aggregates for concrete
In Portugal, volcanic rocks are commonly used as concrete aggregates for concrete in Madeira and Azores Islands and in a lesser extent in the Mainland. Nonetheless, the information about the potential alkali-silica reactivity of Portuguese volcanic rocks is rather scarce. In order to ful ll this lack of information and in the scope of a Portuguese research project, four volcanic aggregates from the Portuguese Mainland and Madeira Archipelago were investigated. For this purpose petrographic characterization (polarizing microscopy complemented by bulk chemical analysis and scanning electron microscopy with energy dispersive detector) along with expansion laboratory tests were carried out. In this paper, results of the investigation are presented aiming to establish a possible correlation among the results from the used methods. ; 55-58pp ; The authors are thankful to Fundação para a Ciência e Tecnologia (FCT) for the financial support concerning the Project IMPROVE (Ref: PTDC/ECM/115486/2009). The authors afiliated in the CGUP are thankful to FCT for the funding of the Strategic Project Pest-OE/CTE/UI0039/2014. The author V. Ramos is grateful to FCT towards the financial support of her PhD studies (Ref:SFRH/BD/47893/2008) ; 5 ; DM/NMM ; Urban Geology, Sustainable Planning and Landscape Exploitation
Potential reactivity to alkalis of Portuguese volcanic aggregates for concrete
Ramos, V. (Autor:in) / Fernandes, I. (Autor:in) / Noronha, F. (Autor:in) / Katayama, T. (Autor:in) / Soares, D. (Autor:in) / Santos Silva, A. (Autor:in) / G. Lollino, A. Manconi, F. Guzzetti, M. Culshaw, P. Bobrowsky, F. Luino
01.09.2014
IAEG XII Congress 2014 Engineering Geology for Society and Territory
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
DDC:
690
Alkalis Released from Aggregates – Significance for Concrete Performance Testing
| Springer Verlag | 2024
Methods for Extracting Alkalis from Spanish Aggregates
| Springer Verlag | 2024
Petrographic Study of Siliceous Aggregates. Parametric Calculus of the Reactivity with the Alkalis
| Springer Verlag | 2018