Recycled Cold-Mix Asphalt Composition Using Industrial Waste such as Waste Glass and Sludge
This technology is a recycled cold-mix asphalt composition formulated with recycled asphalt pavement (RAP) aggregate, recycled concrete aggregate, waste glass powder, ground granulated blast-furnace slag, high-calcium fly ash, activated dried waste sludge powder, paper sludge incineration ash, and emulsified asphalt.
Conventional asphalt production requires heating, which leads to high energy consumption and greenhouse gas emissions, and it has been difficult to maintain material properties when incorporating various industrial wastes as aggregates.
By recycling various industrial wastes into aggregates and powders and mixing them at room temperature, this technology can be applied to road paving asphalt, effectively turning waste into resources and reducing energy consumption.
Key Features:
- Aggregate containing 48–63 parts by weight of recycled asphalt pavement (RAP) aggregate (8–30 mm particle size) and 6–14 parts by weight of recycled concrete aggregate (8–30 mm particle size)
- 10–20 parts by weight of waste glass powder (8 mm or less particle size), 1–15 parts by weight of ground granulated blast-furnace slag, and 1–15 parts by weight of high-calcium fly ash
- 1–5 parts by weight of dried waste sludge powder, which is dehydrated and dried to a moisture content of 50% or less, then calcined and activated at 650–750°C to contain CaO, SiO2, and Al2O3
- A composition mixed at room temperature, including acrylic resin-coated recycled concrete aggregate, emulsified asphalt, recycling additives, and water
