Abstract: Road safety barrier includes a resistant part and one or two dampening parts for a lateral barrier or a traffic divider respectively. The resistant part of the wall type barrier may be rigidly connected to steel plates which are equally spaced and have been specifically conceived for increasing the resistance during an impact caused by a heavy vehicle. The plates have a slot for the passage of ductile screw anchors, allowing the initial displacement of the resistant part and its connection to the support. If provided, the ductile anchor parts are covered by the dampening part.

Abstract: A safety barrier for roads, used as a traffic divider, includes a double row of concrete made New Jersey barrier elements which allow the realization of a hedge on earth interposed between the barrier elements. The earth is contained in a sack made of nonwoven fabric, fixed, to both barrier elements, so as to leave gaps behind the rear walls of the barrier elements. The gaps together with a plurality of sliders or runners provided on the barrier's base, allow during impact a controlled displacement of the barrier elements. The calibration of decelerations is adjusted by the material used for the sliders.

Abstract: Ecotechnical pavement comprising a draining and wearing course (1) and at least a second lower layer (2) of analogous structure. The particular granulometry of the layers (1, 2) and the choice of aggregates, insure both an optimum adherence and the absorption of medium and high acoustic frequencies produced by vehicle traffic. Between the two layers (1, 2) and the lower supporting layer (5) there is provided a “cooperating separation layer” (3) which transmits the forces produced by vehicle traffic to the supporting layer (5). The layer (3) acts as a Helmhotz resonator in order to absorb sound at low frequencies, besides allowing an easy transversal flow of rainwater, the passage of powder of heavy metals or the passage of other types of liquids; the latter, which may be dangerous or polluting, are collected in a lateral “reservoir pavement” (9). The separation layer prevents cracks due to fatigue from rising.

Abstract: Light guardrail for bridges formed by a plurality of uprights (1, 2) made of sheet steel and having a box-like shape. The uprights are individually fixed by means of screw anchors (4) to a support (5) made of concrete (Kerbstone of the viaduct or foundation for the lateral edge on an embankment). The uprights (1, 2) are covered by a cover sheet steel (7) formed by a shaped sheet steel having at New Jersey profile, which partially has at form complementary to the profile of the uprights (1, 2). The individual uprights (1, 2) are connected to each other by means of steel pines (26, 27) fixed on the rear side of the uprights.

Abstract: An anhydrous viscoelastic buffer joint including a filling of viscoelastic bituminous material between the floor slab including the joint slit and the upper zone covered by the vehicles. The joint further includes drainage and canalization systems for the downflow of water in the zone of the joint.