METHODOLOGY FOR CHARACTERIZATION OF ASR IN AGGREGATES IN CHIHUAHUA, MEXICO
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Published:2002
C C Olague, G Wenglas, P Castro, 2002. "METHODOLOGY FOR CHARACTERIZATION OF ASR IN AGGREGATES IN CHIHUAHUA, MEXICO", Challenges of Concrete Construction: Volume 3, Repair, Rejuvenation and Enhancement of Concrete: Proceedings of the International Seminar held at the University of Dundee, Scotland, UK on 5–6 September 2002, Ravindra K. Dhir, M. Roderick Jones, Li Zheng
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This paper describes a study carried out to determine the potential reactivity of aggregates in the state of Chihuahua, México. The methodology development take into account: physiography, geology, climate, and hydrology, for chose sites for testing. 46 sites were analyzed: 22 gravel and 24 sand. According to the results of petrographic examination and X rays diffraction, 100% sites have mineral reactive like chalcedony, quartz crystalline, lithic rhyolites, andesites. The results of ASTMC 289 in sands indicates: 10 sites innocuous, 12 potentially reactive, and 2 reactive. In course aggregates indicates: 4 banks reactive, 11 potentially reactive and 7 innocuous. The ASTMC 1260 was used in 13 sands sites and 12 course aggregates, previously classified according to ASTM 289 like: 11 sands potentially reactive, 2 sands reactive, 10 gravels potentially reactive and 2 course aggregate reactive. The new classification results 10 sands sites reactive, 1 sand potentially reactive, 2 sands innocuous, 6 gravels sites reactive, 3 gravels sites innocuous and 3 gravels sites potentially reactive.
INTRODUCTION
EXPERIMENTAL
RESULTS AND DISCUSION
CONCLUSIONS
ACKNOWLEDGMENTS
REFERENCES
