ReNUBIT Archives

Bitumen softeners are designed to lower bitumen stiffness to allow for greater flexibility and cracking resistance. This can help stabilize mixes with varying bitumen quality and maintain the integrity of the roadway or roofing surface. ReNUBIT® is a proprietary petroleum-based bitumen softener designed to improve polymer compatibility, solvency, and stability. It is effective with a wide range of bitumen found around the world in the paving and roofing industries. ReNUBIT produces softer grades of bitumen that support high polymer and/or crumb rubber levels while improving low temperature properties, fracture toughness, and fatigue resistance.

Asphalt Rejuvenators vs. Bitumen Softeners: Choosing the Right Additive

Asphalt performance is no longer defined solely by virgin materials. With increasing use of recycled asphalt pavement (RAP), tighter specifications, and sustainability targets shaping modern mix design, selecting the right asphalt additive has become a critical decision point. Among the most commonly discussed options are asphalt rejuvenators and bitumen softeners, two additive categories that are often confused but serve very different purposes. Choosing [...]

All About Crumb Rubber for Asphalt Mix Design

Asphalt technology is constantly evolving, and one of the most sustainable and performance-enhancing innovations has been the introduction of crumb rubber into mix designs. Derived from recycled tires, crumb rubber can be integrated into asphalt mixtures to improve durability, flexibility, and resistance to high temperatures. With proper mix design and additive support, crumb rubber asphalt (CRA) extends roadway lifespans while promoting environmental sustainability by [...]

Managing Viscosity in Asphalt Mixes for Improved Workability

Achieving the right asphalt workability is crucial for ensuring smooth, long-lasting roads. One of the key factors influencing workability is the viscosity in asphalt, which is a measure of its resistance to flow. Properly managing asphalt viscosity ensures mixes can be placed and compacted efficiently while minimizing aging defects such as cracking, rutting, or other deformations. Understanding [...]

Bitumen Softeners for Asphalt: Frequently Asked Questions

Bitumen softeners are an important tool in the asphalt industry for maintaining and improving roadway performance. The key advantage of adding softeners to bitumen is their ability to improve low-temperature performance. This results in enhancing penetration, reducing stiffness, and lowering the binder’s PG grade to minimize cracking. By restoring workability, bitumen softeners can help maintain the binder’s balance between [...]