Alkali carbonate reaction expansion of dolomitic limestone aggregates with porphyrotopic texture |
| |
| Institution: | 1. Department of Prehistory, Archaeology and Ancient History, Faculty of Geography and History University of Valencia, Av. Blasco Ibáñez, 28, 46010, Valencia, Spain;2. Department of Analytical Chemistry, University of Valencia, C/ Dr. Moliner 50, 46100 Burjassot, Valencia, Spain;3. Department of Archaeology, University of York, King''s Manor, YO17EP York, UK;4. Department of Earth Sciences, University of Pisa, Via S. Maria 53, 56126 Pisa, Italy;5. Applied and Laser Spectroscopy Lab., ICCOM-CNR, Via G. Moruzzi 1, 56124 Pisa, Italy;6. Sagunto Archaeological Museum, C/ del Castillo 23, 46500 Sagunto, Valencia, Spain;7. Department of Chemical and Geological Sciences, University of Cagliari, Via Trentino 51, 09127 Cagliari, Italy |
| |
| Abstract: | Effects of porphyrotopic textures on expansion of dolomitic limestone aggregates due to alkali–carbonate reaction (ACR) are presented. The dispersed distribution of dolomites in the texture of aggregates can be divided into pophyrotopic-M, psedoporphyrotopic-M and porphyrotopic-S types. It is proved that porphyrotopic textures are more important to ACR expansion than lithologic species of dolomitic limestones. The dolomitic limestones with both porphyrotopic-M or psedoporphyrotopic-M texture and the small size of dolomite crystals are expected to be highly alkali–carbonate reactive. These aggregates can be found not only in dolomitic micritic limestones but also in dolomitic micritic allochemical limestones as well as dolomitic sparry allochemical limestones. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
