Alkali-silica reactivity of some common rock types. A global petrographic atlas

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Isabel Fernandes (Autor) FCUP; Maarten A T M Broekmans (Autor) Outra; Philip Nixon (Autor) Outra; Ian Sims (Autor) Outra; Maria dos Anjos Ribeiro (Autor) FCUP; Fernando Noronha (Autor) FCUP; Borge Wigum (Autor) Outra

Revista

Título: Quarterly Journal of Engineering Geology and Hydrogeology

Vol. 46

Páginas: 215-220

ISSN: 1470-9236

Editora: Geological Society

Indexação

ISI Web of Knowledge - 3 Citações

Scopus - 2 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia do ambiente

Outras Informações

ID Authenticus: P-005-10M

DOI: 10.1144/qjegh2012-065

Abstract (EN): The correct identification of potentially alkali-silica reactive aggregates is important for the prevention of alkali-silica reaction (ASR) in concrete. Although a number of standards for assessment of concrete aggregate by petrography are available, distinction of potentially deleterious from innocuous rock types can be problematic. The application of geological nomenclature alone is insufficient, as the geological history and hence mineralogical texture of a given rock type may strongly influence its performance in concrete. One of the goals of RILEM TC 219-ACS is to develop a worldwide photo atlas as a guide for petrographers in the identification of the mineral compositions and textures that are characteristic of alkali-reactive rocks. The atlas is based on micrographs of rock types recognized as potentially deleterious by field performance and/or laboratory expansion testing. It is intended to serve as an independent reference work and aims to unify rock terminology so as to improve the petrographic characterization of aggregates. The mission of RILEM, the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (Reunion Internationale des Laboratoires et Experts des Materiaux), is to advance scientific knowledge in the field of construction. Its Technical Committee TC 219-ACS focuses on alkali reactions and their effects on concrete.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6