Recycling plastics with aromatic diamines to form polyamide-imides to make an asphalt substitute to cut down the carbon emissions from the production of genuine asphalt and help clear landfills.
The emissions produced when making a new car is equivalent to building just two metres of road.Between 2000 and 2016, the U.S. built an average of 30,427 lane miles of roadway per year, adding 63.4 square miles(164.2052 square kilometres) per year to the amount of land covered by roads. That is just the U.S. The global consequence is a surprisingly steep rise in emmissions as more countries continues to develop the numbers just keep rising. (Emission sources).Further sources are listed below.
Assessment Tool to Estimate CO2 Emissions of Pavement Production and Construction, Kamil E. Kaloush et al.
Espinoza M. et al., Carbon Footprint Estimation in Road Construction: La Abundancia–Florencia Case Study, 2019.
Polyamide-imides PAI. these are amorphous polymers that have exceptional mechanical, thermal and chemical resistant properties .(Properties) These properties make them ideal for asphalt substitutes.They can withstand high tempratures thus are suitable for roads in tropical and mediteranian climates. Low thermal expansivity allows for the production of modular roads which could reduce expenses in road mentainance. Of course the standard industrial method of production makes it very expensive limiting its utility greatly.
A method of Polyamide-imide synthesis using different monomer sequences. Plastics are polymers thus are long chains of monomers. By breaking up the apropriate polymers it is possible to derive the necessary monomers for PAI synthesis. The PAI's formed show a reduction resistivity but not a significant enough decrease to affect utility.(source).The reduction in cost plus the availability of plastics may make this idea highly practical.