The use of waste plastic as a partial aggregate replacement in bituminous mix products often suffers from weak bonding between the plastic surface and the bitumen. This work reports on the use of plastic waste and chemical additives in order to improve the performance of the volumetric and mechanical properties of bituminous mixtures. The selected recycled waste plastics were used as partial aggregate replacement in bituminous mix product. The plastics were treated using a strong oxidising mixture of dichromate and sulphuric acid while the bitumen was treated with a cross linking agent, polyethyleneimine. Three modified bituminous mixtures were prepared and the stiffness results (from Retained Stiffness after Water Immersion Test) were compared with the control bituminous mixture. Over the ten measurement cycles it was observed that the stiffness increased by 10% for the chemically modified bituminous mixtures. This improvement is attributed to an increase in the bonding forces between the aggregates and the bitumen. Furthermore, a mechanism is proposed in order to explain the effect of the chemical additives on the increase in the stiffness of the bituminous mixture.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Utilisation of waste plastic in bituminous mix for improved performance of roads


    Additional title:

    KSCE J Civ Eng


    Contributors:

    Published in:

    Publication date :

    2016-01-01


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    The structural design of bituminous roads

    Transportation and Road Research Laboratory | TIBKAT | 1984


    Recycled waste plastic modification of bituminous binder

    White, Greg / Reid, Gordon | TIBKAT | 2019


    Are bituminous roads damaged by salt?

    Williamson, P. J. | TIBKAT | 1968


    Pavement Condition Rating (PCR) Method-Bituminous Roads

    Suri, B. R. / Indian Roads Congress / Permanent International Association of Roads Congresses, Paris | British Library Conference Proceedings | 2001