The first experiments on the totally new process discussed in this paper were conducted in France in 1988. Since then, almost 2,500,000 square metres have been laid. The technique involves in situ creation of a reinforced membrane composed of a layer of elastomer binder onto which continuous threads are sprayed immediately after it is laid. The threads interweave to create the reinforcement. This paper describes the process, gives the mix designs used, and introduces the machine that was especially designed to manufacture and lay the reinforced membrane. The results of laboratory tests conducted by one of the laboratories of the French administration and the Belgian Road Transport Research Centre are also presented and discussed. These tests show that this process is one of the most efficient processes for preventing reflective cracking. Some examples of its application are mentioned. Its principal advantages over processes using shop-manufactured materials (geotextiles or geogrids) are outlined. (A) The German title of this article is: Ein neues Verfahren zum Schutz vor Reflektionsrissen : dünne Membrane-Reperaturschichten Fertigte an der Baustelle MURMOS.
Samenvatting