مدرس المادة
Function of Base (or Subbase):
1) Drainage purpose
2) Reduce the effect of subgrade volume change on concrete layer
3) Prevent pumping of fines through joints & edges
4) Increase "K" modulus of subgrade reaction Rigid Pavement Characteristics: - Can resist unlimited loading - Minor defects are not reflected. - More skid resistance, safe. - More economical for same projects at certain location. - Concrete layer is less thickness than other layers.
تحميل الملف