Patent ID: 8915995
Filing Date: 2014-12-23
Classification: E01C

Abstract:
1. A coated material for a base layer or binder layer of a road or highway pavement, or for industrial, port, or airport platforms, or for a supporting layer for railroad tracks, wherein said coated material is composed of aggregate mixed with at least one hydrocarbon binder, wherein the aggregate represents more than 95% by weight of the coated material, and the hydrocarbon binder represents at most 5%, wherein the aggregate comprises a granular structure comprising several particle size fractions d/D, each particle size fraction being defined by a lower limit (d) and an upper limit (D), wherein the aggregate comprises a first particle size fraction d wherein the aggregate comprises a third particle size fraction d wherein the third particle size fraction has a ratio (P wherein the width of the third particle size fraction D wherein the ratio of the weight ratio (P by means of which the number of contacts between the particles of the second particle size fraction d 2 /D 2 is maximized, wherein the coated material comprises, after compacting, a void content of less than 10%, wherein the hydrocarbon binder is a hydrocarbon binder modified by inclusion of polymers and/or oil, and/or treated by blowing and/or treated by foaming or by emulsion, by means of which the modulus of rigidity of the coated material, once compacted, is greater than 9000 MPa at a temperature of 15° C. and at a frequency of 10 Hz, and the fatigue resistance of the coated material, once compacted, is greater than 90 microstrain at a temperature of 10° C. and at a frequency of 25 Hz.