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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)
ISSN:2141-7016
| Abstract: The huge amounts of demolition debris (DD) in Gaza Strip cause environmental, social and economical problems. The socio-economic development in Gaza Strip is also threatened by the depletion of natural aggregates. Such conditions necessitate the use of demolition debris waste (DDW) as aggregates in new concrete mixes. Concrete cylindrical specimens of 250 kg/cm2 characteristic strength made of DD were tested to determine the creep behavior of that concrete. The main variables were the type and percent of replacement of demolition debris aggregates in its saturated surface dry conditions. The study concluded that concrete with natural sand and RA1 (recycled coarse aggregate from crushed concrete fragments only) provided 32.8% higher creep strain than that of natural aggregate concrete while concrete with recycled fine aggregate and RA1 provided 79% higher strain than that of natural aggregate concrete. In addition, concrete with recycled fine aggregates and RA2 (recycled coarse aggregate from all crushed demolition fragments) provided 118% higher creep strain compared to natural aggregate concrete |
| Keywords: recycled aggregates, natural aggregate, demolition waste, structural concrete, creep behavior |
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