A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of mineralogical and chemical compositions on alkali-silica-reaction of Tennessee limestones
Highlights The AAR expansion of dolomitic limestones from Tennessee is mainly caused by ASR. Expansion on ASTM C1293 and SiO2 content of limestones showed strong correlation. Early expansive limestones showed ASR distress within 5-10 years after construction. Mitigation with fly ash F is more effective when expansion rate is relatively slow.
Abstract The paper aims to identify potential correlations between mineralogical and chemical compositions of AAR reactive dolomitic limestone aggregates from Tennessee and their expansion on ASTM C1293 for quick evaluation of reactivity. The chemical compositions of 26 limestones, namely the silica content (SiO2), showed a strong correlation with the expansion in the concrete prism test. The early and highly expansive limestones are characterized by a high clay/ mica content (>5%). The reactivity of Tennessee limestones is mainly caused by crypto/microcrystalline quartz, chert, and finely disseminated silica in carbonate and clay/mica matrices, and it can be reasonably evaluated using X-ray diffraction and chemical analysis coupled with petrographic examinations.
Influence of mineralogical and chemical compositions on alkali-silica-reaction of Tennessee limestones
Highlights The AAR expansion of dolomitic limestones from Tennessee is mainly caused by ASR. Expansion on ASTM C1293 and SiO2 content of limestones showed strong correlation. Early expansive limestones showed ASR distress within 5-10 years after construction. Mitigation with fly ash F is more effective when expansion rate is relatively slow.
Abstract The paper aims to identify potential correlations between mineralogical and chemical compositions of AAR reactive dolomitic limestone aggregates from Tennessee and their expansion on ASTM C1293 for quick evaluation of reactivity. The chemical compositions of 26 limestones, namely the silica content (SiO2), showed a strong correlation with the expansion in the concrete prism test. The early and highly expansive limestones are characterized by a high clay/ mica content (>5%). The reactivity of Tennessee limestones is mainly caused by crypto/microcrystalline quartz, chert, and finely disseminated silica in carbonate and clay/mica matrices, and it can be reasonably evaluated using X-ray diffraction and chemical analysis coupled with petrographic examinations.
Influence of mineralogical and chemical compositions on alkali-silica-reaction of Tennessee limestones
Abd-Elssamd, Ammar (author) / Ma, Zhongguo John (author) / Hou, Hugh (author) / Le Pape, Yann (author)
2020-06-09
Article (Journal)
Electronic Resource
English
Petrography study of two siliceous limestones submitted to alkali-silica reaction
| Online Contents | 2006
Petrography study of two siliceous limestones submitted to alkali-silica reaction
| British Library Online Contents | 2006
Petrography study of two siliceous limestones submitted to alkali-silica reaction
| British Library Conference Proceedings | 2006