Speaker
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Abstract. To promote the circular economy and the sustainable pavement construction, the feasibility of using three industrial wastes for the manu-facture of warm mix asphalt (WMA) has been analyzed. The first WMA used 5% of industrial waste rich in lignin biopolymer from the wood hard-board as a bitumen partial substitute. In the second WMA, 50% of natural filler was replaced by waste biomass fly ashes from the paper industry. The third WMA substituted the 100% natural filler with waste ground granulat-ed blast furnace slag from the steel production. Additionally, a control WMA was studied. The peak load and the strain-at-failure have been ana-lyzed based on the results from indirect tensile strength (ITS) tests. The peak load was used as the main parameter to study the WMA’s brittleness. The WMA produced with 100% ground granulated blast furnace slag exhib-ited superior performance in terms of brittleness than the control mixture due to a higher breaking displacement, leading to a better cracking perfor-mance.
