Chemically, bitumen is a complex mixture of large hydrocarbon molecules (asphaltenes and maltenes). Its defining characteristic is its viscoelasticity : it behaves like a solid when subjected to sudden stress (like a car hitting a pothole) but like a liquid over long periods (like a heavy truck slowly sinking into a road on a hot day). This property makes it perfect for road construction, as it can absorb both impact and gradual deformation.
: Used for protecting the gable ends or side edges of a roof to prevent wind uplift. These are often sold in 1000mm lengths, such as the Onduline Verge Piece which is 1000mm x 410mm .
Working with hot bitumen requires strict safety measures:
In the context of roofing and construction, a "full piece" of bitumen typically refers to a standard, uncut unit of the material used to cover or finish a roof. Depending on the specific system you are using, this can mean a of corrugated roofing or a specialized accessory piece like a ridge or verge. Standard Full Pieces for Roofing
: For road or bridge construction, a full piece of bitumen filler board might be priced per piece and measures to specific engineering standards, such as those found on IndiaMART .