Abstract: The invention relates to a reinforcing mat (1) for reinforcing a top layer of a ground, which top layer consists of bitumen, asphalt or a hydrocarbon-containing material of like nature, in which the reinforcing mat (1) is a mat woven with longitudinal wires (2, 3) and provided with reinforcement elements (4) running in the transverse direction of the mat, in which the reinforcement elements (4) consist of helically twisted steel profiled wires of essentially rectangular cross section.

Abstract: A communication cable (10) comprises optical fibres (24) and/or metal conductors (20) for the transmission of information, and a tensile member, the tensile member comprising a steel strand and synthetic material. The steel strand has a modulus of elasticity of at least 140 000 N/mm.sup.2. The steel strand comprises a core wire (12) and one layer of layer wires (14) surrounding the core wire. A contact is provided between the layer wires and the core wire. The interstices between the layer wires and the core wire are filled with a first synthetic material (13) having a melting-point above 150.degree. C. The steel strand is covered by a layer of a second synthetic material (16). The filling with the first synthetic material and the covering by a layer of a second synthetic material is such that watertightness is obtained in the longitudinal direction of the tensile member.