کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
259656 503640 2010 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Predicting ASR aggregate reactivity in terms of its activation energy
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Predicting ASR aggregate reactivity in terms of its activation energy
چکیده انگلیسی

Alkali-silica reaction has become in concrete structures a growing and annoying problem for engineers, contractors and government agencies. Laboratory standards tests like ASTM C 1260 and ASTM C 1293 are available and are currently used by researchers and agencies. However, those tests have limitations and drawbacks. Those short comings warrant a completely different approach to ASR testing. Hence, a detailed study was conducted to develop a reliable aggregate test protocol that will assist the engineers, contractors and owners to identify and measure the potential for concrete pavement degradation because of ASR. Results indicate that the activation energy concept of ASR can be seen as a useful parameter and has the potential of playing the role of a screening parameter for rocks with different reactivity. Statistical analysis conducted shows that the test protocol is highly repeatable and reliable.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 24, Issue 7, July 2010, Pages 1101–1108
نویسندگان
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