Road Surface Technology’s latest issue included a feature on Sripath’s product portfolio and its commitment to sustainability efforts in the paving industry. The article focused on how the innovative additive developer evaluates its resource and energy use while addressing performance concerns.  

 

For sustainability in asphalt to be impactful, contributors to the paving lifecycle need to back their environmental claims with validated data contractors can use to make critical decisions. Sripath’s own assertions regarding sustainability are independently verified by Environmental Product Declarations (EPDs) available publicly on the company’s website. These documents are further evidence of Sripath’s commitment to developing asphalt or bitumen additives that support contractors’ dual priorities of meeting sustainability requirements and performance specifications.  

 

For example, the company’s asphalt rejuvenator, ReLIXER®, was analyzed using a Life Cycle Assessment detailing the product’s carbon footprint including raw material source, raw material transport, manufacturing, and transport of the final product. Considering these factors alongside carbon sequestration analysis, ReLIXER exhibited a global warming potential (GWP) of -1.677. Notably, the recycling agent also improves the performance of mixes with high amounts of reclaimed asphalt pavement (RAP). Testing results also showed the bio-based oil blend to have superior aging performance during testing compared to petrol oil-based rejuvenators requiring higher dosages.  

 

ReLIXER is not the only Sripath product to undergo this rigorous analysis. EPDs are available for the majority of the company’s additives including: 

  • PGXpand®: a bitumen-friendly polymeric additive 
  • NuMIXER®: a bio-based oil bitumen softener 

 

These products have shown that effective asphalt or bitumen additives can not only be produced with a lower carbon footprint but may also help contractors lower their fuel consumption and energy expenditure during manufacturing and paving processes. This can have additional helpful effects for departments of transportation and other agencies seeking solutions that support sustainability in asphalt without sacrificing performance.