Binder of vegetable nature for the production of materials for building and/or civil engineering

A material for the production of building layers and/or coatings comprising a mixture of an aggregate and a binder,

• wherein the binder comprises, based on the total weight of (a) and (b):
• (a) 60 to 80% in weight of at least one purely natural or modified natural resin, of vegetable origin, having a softening point measured according to the standard EN 1427 of 100 to 200° C.;
• (b) 20 to 40% in weight of at least one oil of vegetable origin having a viscosity at 25° C. of 50 mPa·s to 1000 Pa·s;
• (c) said binder having a penetrability at 25° C., measured according to the standard NF EN 1426, of 20 to 300 1/10 mm and a softening point of 30 to 75° C., measured according to the standard NF EN 1427;
• and
• said binder being exempt of any natural or synthetic elastomer and of any thermoplastic polymer, said aggregates being selected from the group consisting of fines, sand, gravel and combinations thereof.