Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An alkali-reactive basalt from Queensland, Australia
AbstractBasalts are basic igneous rocks which are normally non-reactive with alkali in concrete. However, a glassy olivine basalt of Tertiary age from Queensland, Australia has been found to be highly reactive with high alkali cement and unsuitable as a concrete aggregate. Examination of the rock petrographically, by scanning electron microscopy and electron microprobe analysis revealed the presence of 1.6% opaline silica. Also present in the rock was a glass (about 34%) of a Si-rich composition, and this together with the opaline silica is suspected as the components causing reactivity of the basalt. However, the 1.6% opaline silica alone would be sufficient to render the rock reactive to alkali hydroxide.
An alkali-reactive basalt from Queensland, Australia
AbstractBasalts are basic igneous rocks which are normally non-reactive with alkali in concrete. However, a glassy olivine basalt of Tertiary age from Queensland, Australia has been found to be highly reactive with high alkali cement and unsuitable as a concrete aggregate. Examination of the rock petrographically, by scanning electron microscopy and electron microprobe analysis revealed the presence of 1.6% opaline silica. Also present in the rock was a glass (about 34%) of a Si-rich composition, and this together with the opaline silica is suspected as the components causing reactivity of the basalt. However, the 1.6% opaline silica alone would be sufficient to render the rock reactive to alkali hydroxide.
An alkali-reactive basalt from Queensland, Australia
Shayan, A. (Autor:in) / Quick, G.W. (Autor:in)
29.08.1988
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Queensland Curtis LNG plant, Australia
| British Library Online Contents | 2014
Public Water Supplies of Queensland, Australia
| Wiley | 1963
Leading industry issues in Queensland, Australia
British Library Online Contents | 1998
New species of Calandrina (Portulacaceae) from Queensland, Australia
| British Library Conference Proceedings | 1996
University library, Sunshine Coast, Queensland, Australia
| Online Contents | 1999