Application Example of Recycled Aggregate Concrete in Japan-Medium Quality Recycled Aggregate Used in Concrete Pre-cast Element

摘要

According to the point of recycled society, solid waste concrete is required to use as recycled aggregate in new concrete. For recycled aggregate M, with lower cost and higher recovery ratio, and its expectation value is increased. But it actually limits to use in underground structural object due to its higher drying shrinkage and bad frost resistance. The investigation discussed recycled aggregate M was applied in concrete pre-cast element. The results show that, the properties quality between concrete pre-cast elements used recycled aggregate M and common concrete are nearly the same on strength and durability, and it is available to used it in concrete pre-cast element.