Effect of Two Curing Conditions on the Performance of Cold in Place Asphalt Mixes Retreated with a Bituminous or a Biobased Emulsion

Cold recycling techniques provide an eco-friendly solution for restoring aged asphalt pavements, minimizing non-renewable material usage. Limited to low-traffic areas, its effectiveness depends on weather and seasonality. Various research focus on bio-sourced materials to substitute bitumen, but ensuring compatibility and solving aging issues are crucial for manufacturing durable pavements with these alternatives. The aim of this work is to validate the use of biosourced emulsion for cold in-place recycling with the same level of performance as conventional bituminous solutions. The effectiveness of the mixtures was assessed using a simple compression test, considering two different conditions (temperature of 18 ℃/relative humidity of 50% and temperature of 35 ℃/relative humidity of 20%) over a 90-day curing period. The results indicate that the mix with biomaterial emulsion has comparable performance to the mix with conventional emulsion and highlight the direct influence of temperature and water loss on the characteristics of the materials.