Flexible pavement construction generally consists of 4 parts:
– Ground floor (sub grade)
– Lower pavement (sub base course)
– Pavement top (base course)
– Surface (surface course)
Ground Ground (Sub Grade)
The base soil is the original soil surface, excavated surface, or pile surface which is the basis for laying the rest of the pavement section.
The strength and durability of the pavement construction depend on the nature and carrying capacity of the ground. So this base ground determines the thickness of the soil layer above it.
To determine the strength of the basic soil is usually used the way CBR (CALIFORNIA BEARING RATIO). Commonly used classification systems on highways are UNIFIED and AASHO systems, while for airfields the FAA system is used.
Lower Pavement (Sub Base Course)
Sub base course or pavement down. Is the pavement that lies between the ground layer and the top pavement. Thus the sub base course is the foundation that supports the top pavement and surface layers.
The sub-base function is:
Upper Pavilion (Base Course)
The base course is the pavement section located between the surface layer and the sub base layer.
The material for the surface layer is generally the same as the material for the foundation layer, with higher requirements.
The use of asphalt material is necessary for the coating to be water-resistant, besides the asphalt itself provides tensile stress, which means enhancing the bearing capacity of the louboutin wheel.
Non-Woven Geotextile (Geotextile), otherwise called Fabric Filter (Factory) … Read More