Bitumen can only be used technically in temperature ranges whose position is largely determined by the hardness. In addition to the absolute values of the service temperatures, the plasticity range is also characteristic, which is defined as the difference between the softening point ring and ball as well as the refractive point after corrosion. In order to obtain good service properties, the widest possible plasticity margins are desirable.
Bitumen is modified with various additives to improve its properties. Among other things, they aim to extend the plasticity margins of modified bitumen in order to improve durability, especially in the range of the expected extreme temperatures. This is achieved by stiffening in the higher temperature range and/or plasticizing in the lower temperature range. Other important properties, such as adhesion to stone or viscosity at the processing temperature, must not be impaired. Furthermore, the modifiers should be as temperature- and oxidation-stable as possible with regard to the processing conditions (up to 180° (rolling asphalt and 240° (cast asphalt) and the long-term exposure of asphalt surface courses to UV radiation from sunlight.
The increasing trend towards recycling and the installation of reduced asphalt layer thicknesses are aimed at a more economical approach. This will of course also save scarce and thus expensive raw material deposits, thus relieving tight public budgets.
Our easy-to-use, high-performance LUCOBIT products surpass current PmB additive standards with respect to most parameters and - unlike other offers - do not require prior mixing with bitumen. Consequently, it is THE economic solution for your needs in a tough environment.