The ductility test and the penetration test are two different tests conducted to evaluate different properties of bitumen. While both tests provide important information about the characteristics of bitumen, they assess different aspects of its behavior. The ductility test measures the ability of bitumen to stretch or elongate without breaking.
The concrete that is prepared at the site (for pouring) is not exactly the same that is made in the laboratory with the same ratio, this difference is due to low quality control measures and insufficient monitoring system. The term ‘labcrete’ is often used to define concrete or mortar that is made and tested under strict laboratory conditions,