Page 7 - RoadCem in Road Construction & Rehabilitation[23318].pdf
P. 7
road construction & reconstruction with roadcem
To understand the way RoadCem works we have to take a look at the repetitive loads which are typical for roads
when in use; assuming we have a cyclic dynamic loading which is acting through the asphalt to the road base.
Therefore the ideal base for any road construction should have the following attributes:
�� High modulus of elasticity
�� High flexibility
At first, these two attributes seem to be very similar, but they are not.
The modulus of elasticity is the parameter which determines what amount of force “F” is needed to deflect the
material. Therefore higher values for the modulus of elasticity are more beneficial, meaning that force “F” has to be
higher to deflect or deform the material.
High flexibility for the road base is needed to compensate for the deformation (or deflection) after loads pass to
avoid effects like rutting, which also often cause induced reflective cracking in the surface asphalt layers.
