LAUSR

The Semi Rigid Pavement (SRP) is an alternative solution to overcome the limitations caused by conventional pavements, i.e. Flexible (asphalt concrete) and Rigid (cement concrete) pavements, which consists both the flexibility from asphalt component and the rigidity from cement constituent. The Semi Rigid Pavement has already become more and more popular for years internationally as a surface layer of those pavements under serious conditions such as road junctions, airport aprons, bus depots and heavy loading yards. In this paper, the fundamental properties and general technical requirements of SRP, including its two main components of the porous asphalt concrete and the grouting material, were introduced after a briefing on SRP development history. The advantages and benefits of SRP were deduced and discussed together with the comparisons among the flexible pavement, rigid pavement and SRP. The application/construction procedure of SRP was introduced step by step. The selected typical pavement projects constructed with this SRP system were presented and some studies on special cases when SRP was laid on the top of concrete surface and on the weaker base were also conducted. Lastly, the durability of SRP has been reviewed.