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The subject of concrete recycling is regarded as very important in the general attempt for sustainable development in our times. Korean government enacted Act on Facilitation of Construction Waste Recycling for effective recycling of rapidly increasing construction wastes. Main content of this Act is to facilitate effective and proper recycling of wastes concrete, which is the highest in generation volume among construction wastes. This Act limits the definition of recycled aggregates to the aggregates which obtained quality certificate and for this purpose, government has operated quality standard and certificate system of recycling aggregate. The objective of this experimental study is to evaluate the mechanical properties of recycled aggregate concrete with replacement level. The mixing types were divided into four series based on replacement level 0, 30, 60 and 100% recycled coarse aggregates by ready-mixed concrete.
The results show that compressive strength, elastic modulus and modulus of elastic of concrete is decreased in proportion to the replacement level of recycled coarse aggregate. Also, some design coefficients or recommendations need to be constructed in design code.

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UCI(KEPA) : I410-ECN-0101-2009-540-014971046