کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
270035 504725 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Post-fire residual mechanical properties of concrete made with recycled rubber aggregate
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Post-fire residual mechanical properties of concrete made with recycled rubber aggregate
چکیده انگلیسی

This study investigates the effects of elevated temperatures on the residual mechanical performance of concrete produced with recycled rubber aggregate (RRA). Four different concrete compositions were prepared: a reference concrete (RC) made with natural coarse aggregate and three concrete mixes with replacement rates of 5%, 10% and 15% of natural fine and coarse aggregate by RRA from used tyres. Specimens were exposed for a period of 1 h to temperatures of 400 °C, 600 °C and 800 °C, after being heated in accordance with ISO 834 time–temperature curve. After cooling down to ambient temperature, the compressive strength and the splitting tensile strength were evaluated and compared with reference values obtained prior to fire exposure. For the replacement rates used in the present experiments, the obtained results show that concrete made with recycled rubber aggregate (CRRA) present a thermal response that is roughly similar to that of RC; in addition, although residual mechanical properties of CRRA are noticeably more affected than those of RC, particularly for higher exposure temperatures, the relative reduction should not prevent it from being used in structural applications.


► Effects of elevated temperatures on the residual mechanical performance of concrete produced with recycled rubber aggregate (CRRA).
► Four concrete compositions with varying replacement rates of recycled rubber aggregate.
► Heating according to ISO834 with temperature plateau at 400 °C, 600 °C and 800 °C.
► Evaluation of residual compressive and splitting tensile strengths.
► Residual mechanical properties of CRRA noticeably more affected than those of reference concrete.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fire Safety Journal - Volume 58, May 2013, Pages 49–57
نویسندگان
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