Cement-less and asphalt-less concrete bounded by recycled plastic

• Asphalt-less-Cement-less recycled plastic bounded concretes (RPBCs) were formulated.
• Some of the RPBCs possessed compressive strength similar to asphalt concretes (ACs).
• And some of the RPBCs are as strong as the Portland cement concretes (PCCs).
• Crack healing efficiency of the RPBCs is in the order of 92% as opposed to 9% for ACs.
• The RPBCs showed lower thermal sensitivity and better moisture resistance than the ACs.
• They exhibits better flexural strength than the ACs and PCCs in some cases.

Recycled plastic bounded concretes (RPBCs) containing zero asphalt binder and zero Portland cement were formulated. Mechanical properties of the RPBCs was analyzed with reference to Portland Cement Concretes (PCCs) and Asphalt Concretes (ACs). Some of the RPBCs possessed compressive strength similar to the ACs and some even similar to the very strong PCCs. All of the RPBCs exhibited excellent moisture resistance, far better than the ACs in some cases. rPP-bounded concrete exhibits excellent stiffness and a flexural strength, approximately 3 times that of the PCC and 5 times that of the ACs. The crack healing efficiency of the RPBCs is in the order of 92% as opposed to 9% for ACs. The RPBCs demonstrate much lower thermal sensitivity and better moisture resistance than the ACs. Potential area of application and limitation of the RPBCs were also Identified.