A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
https://orcid.org/0000-0002-6386-619X
https://orcid.org/0000-0002-8594-5243
https://orcid.org/0000-0001-8960-7228
Abstract Granite is one of the most commonly employed materials in the production of aggregates for concrete, and represents 40% of the total volume of aggregates produced in Portugal. This type of rock is traditionally considered as slowly/late reactive or even non-reactive to alkalis. However, a number of cases of damaged concrete structures in Portugal, due to alkali–silica reaction, have been related to granitic aggregates. A research program has been developed in order to define the best test method for evaluating the potential alkali-reactivity of granitic rocks. The present study involved thirteen granites collected from different quarries. The tests carried out included: petrographic examination of the aggregate, as well as mortar and concrete expansion tests. It was concluded that the content of microcrystalline quartz correlates better with the results of concrete prism expansion tests than with the mortar-bar expansion test.
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
https://orcid.org/0000-0002-6386-619X
https://orcid.org/0000-0002-8594-5243
https://orcid.org/0000-0001-8960-7228
Abstract Granite is one of the most commonly employed materials in the production of aggregates for concrete, and represents 40% of the total volume of aggregates produced in Portugal. This type of rock is traditionally considered as slowly/late reactive or even non-reactive to alkalis. However, a number of cases of damaged concrete structures in Portugal, due to alkali–silica reaction, have been related to granitic aggregates. A research program has been developed in order to define the best test method for evaluating the potential alkali-reactivity of granitic rocks. The present study involved thirteen granites collected from different quarries. The tests carried out included: petrographic examination of the aggregate, as well as mortar and concrete expansion tests. It was concluded that the content of microcrystalline quartz correlates better with the results of concrete prism expansion tests than with the mortar-bar expansion test.
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
https://orcid.org/0000-0002-6386-619X
https://orcid.org/0000-0002-8594-5243
https://orcid.org/0000-0001-8960-7228
Abstract Granite is one of the most commonly employed materials in the production of aggregates for concrete, and represents 40% of the total volume of aggregates produced in Portugal. This type of rock is traditionally considered as slowly/late reactive or even non-reactive to alkalis. However, a number of cases of damaged concrete structures in Portugal, due to alkali–silica reaction, have been related to granitic aggregates. A research program has been developed in order to define the best test method for evaluating the potential alkali-reactivity of granitic rocks. The present study involved thirteen granites collected from different quarries. The tests carried out included: petrographic examination of the aggregate, as well as mortar and concrete expansion tests. It was concluded that the content of microcrystalline quartz correlates better with the results of concrete prism expansion tests than with the mortar-bar expansion test.
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
Ramos, Violeta (author) / Fernandes, Isabel (author) / Santos Silva, António (author) / Soares, Dora (author) / Fournier, Benoit (author) / Leal, Sara (author) / Noronha, Fernando (author)
Cement and Concrete Research ; 86 ; 63-77
2016-05-04
15 pages
Article (Journal)
Electronic Resource
English
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
| British Library Online Contents | 2016
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
| Online Contents | 2016
Assessment of the potential reactivity of granitic rocks — Petrography and expansion tests
| British Library Online Contents | 2016