Use of Low-Quality Recycled Aggregate for Structural Concrete
By Y. Dosho
Concrete Journal, Vol.55, No.8, Aug. 2017
- Synopsis
- In order to build a sustainable recycling system, it is necessary to achieve the following three objectives from the viewpoint of the life cycle assessment (LCA) of structures: (1) securing of safety and quality, (2) reduction of environmental load, and (3) cost reduction. This report presents the results of building a recycling system designed for the use of low-quality recycled aggregate made from concrete waste for structural concrete. The proposed system aims for the use of low-quality recycled aggregate for structural concrete through the aggregate replacement method, besides the use for recycled crushed stone as conventional roadbed material. Through actual large-scale use, we were able to achieve the three above-mentioned objectives, which are traditionally held to be difficult to achieve with resource recycling technology.
- Keywords:
- resource recycling, recycled aggregate concrete, low-quality recycled aggregate, aggregate replacement method, large-scale use
