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ACC Members Contributions to Reimagining Resources

Kraton Asphalt Performance Additive Driving Development of Sustainable Roadways

Sustainability Challenge:

Changes in construction materials economics, environmental regulations, and an emphasis on sustainable pavements means highway engineers are seeking solutions that enhance use of recovered materials in pavements and asphalt surfaces while enabling high-quality roads and infrastructure.

Chemistry Solution:

Kraton asphalt performance additives enable development of durable, cost-effective roads using high percentages of reclaimed asphalt, enabling resource efficiency and shorter construction time.

Sustainability Benefit:

Kraton developed an asphalt performance additive that can help build sustainable highways by enabling use of reclaimed asphalt pavement in road rehabilitation projects.

Around the world, investment in transportation infrastructure continues to grow, enhancing the need for sustainable, environmentally sound construction processes and materials.

SYLVAROAD RP1000 Performance Additive, produced by Kraton, a global copolymer producer, helps make asphalt recycling more sustainable by enabling high-performance reuse of recycled asphalt pavement. The additive also improves resource efficiency by reducing the need for virgin aggregates and liquid asphalt, while reducing the overall environmental impact of road construction

Ocean and Road By helping to enable a significant increase in the amount of reclaimed materials that can be used in an asphalt mix, use of the high-performance additive can lead to more sustainable and resource-efficient road construction. The engineered use of this high-performance additive can also help reduce pavement thickness, saving raw materials and construction time.

Derived from crude tall oil (CTO), a bio-based raw material that is a byproduct of the paper manufacturing industry, SYLVAROAD RP1000 High Performance Additive makes effective use of existing resources to help make asphalt road construction more economical, durable and sustainable.

With less than a kilogram per ton of asphalt mix, typically containing up to 50 percent reclaimed asphalt pavement, the SYLVAROAD RP1000 additive can restore aged material to its original properties and minimize cracking and rutting on the road. The CTO additive also enhances asphalt mix performance so that high recycled content can be used in surface-layer paving mixes, not just sub-surface layers.

Kraton’s bio-based products are derived from biomass, and many of its products are certified under the European Bio-based certification scheme; the SYLVAROAD™ RP1000 additive is certified 90 percent bio-based. After five years of stakeholder collaboration, various European road authorities began using SYLVAROAD™ RP1000 additive on commercial road projects. Benefits reported by road authorities include reduced stockpiles of reclaimed asphalt pavement and optimized use of recovered products.

Dow Working to Turn Discarded Plastics into Roads

Sustainability Challenge:

Plastics materials that aren’t recycled can pollute the environment.

Chemistry Solution:

Technologies made possible by chemistry can convert used plastics into road materials.

Sustainability Benefit:

In India, The Dow Chemical Company worked with government officials and waste collectors to collect and process enough discarded plastic material to pave 40 kilometers of roads—diverting 100 metric tons of waste from landfills in the process.

With the goal of reducing marine debris and recovering the value of discarded materials, The Dow Chemical Company is collaborating with governments and other stakeholders in Asia Pacific to turn discarded plastics into durable, long-lasting roads.

  • In India, Dow worked with government officials and waste collectors in the cities of Bangalore and Pune to collect enough discarded plastics to pave 40 kilometers of roads – diverting 100 metric tons of waste from landfills in the process. Volunteers collected and delivered plastics to local recyclers for processing. The material was then sent to local asphalt plants, where it replaced bitumen in the asphalt mixture.
  • As one of the top countries facing the marine debris challenge, the Indonesian government set a goal to reduce plastics waste in the ocean by 70 percent by 2025. To work toward this goal, Dow partnered with government and other stakeholders to develop the country’s plastic road building project.

Plastic CollectionDow worked with local groups to complete the first plastic road trial in Depok city, West Java, in 2017. The road was made by mixing 3.5 metric tons of discarded plastics into asphalt to create a 1.8 kilometer-long-road, covering a total area of 9,781 square meters.

Roads made using discarded plastics can last longer than current asphalt roads built in these countries. They also save petroleum used to make asphalt, have lower greenhouse gas emissions, help reduce litter and provide a new life for discarded plastics.

Hexion Resin Technologies Expand Use of Wood Resources

Sustainability Challenge:

Wood is a popular renewable building material; however, less than 65 percent of a tree can be used for solid lumber.

Chemistry Solution:

Hexion EcoBindTM resin technology helps manufacturers recover more usable wood from trees, resulting in a variety of engineered wood products for use in building materials.

Sustainability Benefit:

Engineered wood can enable more than 95 percent of every tree to be used, saving natural resources and expanding use of renewable wood resources.

Wood has long been a material of choice for building and construction, due to its strength, multi-functional uses and sustainability attributes. Wood products are naturally biodegradable, renewable, energy efficient and help remove carbon dioxide from the atmosphere. In addition, sustainable forestry helps enable new growth that adds more than two times the amount of wood removed from U.S. forests for building and construction every year.

Specialty chemical manufacturer Hexion developed EcoBindTM ultra-low-emission resins for binding wood products. With its ability to provide high tensile strength, durability and heat and water-resistance, these resins can help create engineered wood products that use more of the wood from trees for products that are stronger and more durable than wood alone.

These resins can help transform wood veneer, fibers and strands of lumber into engineered wood like plywood, oriented strand board, flooring and I-joists used in construction, as well as in a wide variety of products like thermally fused laminate, laminated countertops, floors, cabinets, molding, doors and furniture.

Engineered wood panels can be made from recovered wood waste that might otherwise be burned or disposed of in a landfill. So EcoBindTM resin technology can help trees that enter a mill to be used to their maximum potential. For example, while typically only 63 percent of a tree is used to manufacture solid lumber, creation of engineered wood panels using EcoBindTM can put 95 percent of a tree to use.

Hexion’s resin technology advances have enabled engineered wood panel manufacturers to reduce their composite panel emissions – for products such as particleboard, medium density fiberboard and hardwood plywood – by 80 to 90 percent since the early 1980s. These stewardship efforts have resulted in products that meet performance requirements set by the marketplace and regulatory bodies to minimize emissions – some emissions are at or very near the level of wood itself.

Hexion’s EcoBindTM resin technology meets or exceeds numerous global emission standards, including those set by the U.S. Environmental Protection Agency, the California Air Resources Board and European and Japanese standards, as well as specifications recommended by the U.S. Green Building Council.

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