  Currently, most of the waste plastics cannot be recycled, causing serious
environmental concerns. In this research, we investigated a compaction
formation technology to fabricate structural materials with thermoplastic
binders. When the compaction pressure was 70~100 MPa, with only ~10 wt%
polyethylene binder, the flexural strength was greater than that of typical
steel-reinforced concrete, suitable to many construction applications. Because
construction materials are tolerant to impurities, our work may provide a
promising opportunity to recycle waste plastics and to reduce the portland
cement production.
