Crosslinkers are a key component for enhancing the performance of Polymer Modified Bitumen (PMB). These additives can help enhance the bond between polymers and bitumen in a mix and improve durability, elasticity, and rutting resistance. Notably, crosslinking agents can differ in terms of chemistry, reactivity, and dosage requirements. Because of this, asphalt crosslinkers must be carefully selected and introduced at [...]
Rutting remains a threat to long-term asphalt pavement durability on a global scale. These depressions in the roadway surface that appear as grooves from wheel paths can occur due to repeated heavy traffic with, frequent start and stop, especially in climates with extreme high temperature. More than an inconvenience or imperfection, rutting can result in unsafe driving [...]
Asphalt producers are increasingly relying on reclaimed asphalt pavement (RAP) to meet environmental goals and cost-efficiency targets. Using RAP can allow aggregate and aged binder to be reused, reducing the need for virgin materials and lowering overall material costs. However, one key challenge that working with RAP poses to plant operators and mix engineers is variability. When [...]
TRANSCRIPT: As global demand for roads grows, so does the importance of the material that holds them together: bitumen. However, once a consistent, locally sourced byproduct of oil refining, bitumen quality has become increasingly unpredictable. Why? Because modern refineries now prioritize extracting other outputs, resulting in bitumen of varying, often lower quality. Bitumen [...]
