The invention relates to the use of stabilizing body in the construction of roads. The stabilizing body comprises a substantially rigid, planar body (20) that can be inter-engaged with other similar bodies in a configuration in which an extended, substantially planar stabilizing structure can be formed. Each stabilizing body defines a multi-cellular configuration with cells (26) defined by side walls extending from the operative top side of the body towards the operative bottom side thereof. The...

An expansion joint of the construction that opposing upper wavy end face plates with a regular gap therebetween and lower wavy end face plates with the upper end thereof bonded to the lower end of the upper wavy end face plates are provided oppositely, an elastic means is interposed between said both upper wavy end face plates, upper edge of said upper wavy end face plates are provided in flush with or close to the road surface, anchor materials are provided protrudingly at the back of said both...

A guard rail assembly for roads comprising a first post, a second post, a fixing frame, a connector, and a pair of guard plates. The first post is a hollow squared structure filled with foamed plastics therein and is detachable and inserted into a second post buried in the ground. The connector is a corrugated plate having continuous vertical bending mounted on the first post. The pair of guard plates have a shape corresponding to the connector. Each end of the guard plate is engaged with the co...

Residue from dressing bauxite is mixed with NaCl and ground; polyurethane foam is ground and mixed with CaCl.sub.2 ; a silicon organic compound and quartz powder is added to one or both of the ground mixtures; the grains are embedded in bituminous material or asphalt to be used for making a surface road, being protected against frost by these salts. Specific examples and method steps are described.

A method of resurfacing a road or the like wherein existing surface profile is first measured as a function of distance over the road surface. A desired profile is then identified as a function of measured road profile by simulating travel of a vehicle over the road surface and observing the quality of vehicle ride and/or pavement dynamic load while the spatial wavelength characteristics of measured profile are progressively attenuated. When ride quality and/or dynamic load of desired preselecte...

A cleaning unit is disclosed, comprising: a containment chamber (2) defining an accumulation base (10), a suction apparatus (3) including a suction inlet (6) positioned close to the ground, and a filtering apparatus (12), the suction apparatus (3) comprising primary suction means (4) and secondary suction means (5) positioned in parallel to one another above the accumulation base (10), the primary suction means (4) controlling said suction inlet (6) and the secondary suction means (5) being suit...

A road marker (10) comprising a body (12) extruded from a non-resilient material is disclosed and claimed. The marker body comprises a sloping wide base (14), a neck (18) and a head (16) and is generally I-shaped in transverse cross section. The cross-sectional area of the neck (18) on line A is less than that of the head (16) and that of base (14) in parallel planes.

A method of laying a road characterized by spraying and impregnating a roadbed with 1 g/m.sup.2 to 500 g/m.sup.2 of a liquid water-repellent agent and then laying a road on said roadbed wherein said liquid water repellent agent is fluid at ordinary temperatures and contains as the main ingredients one or more compounds chosen from among silane-type compounds and organopolysiloxane derivatives.

A method of repairing concrete roads in which the defective concrete is cut away and the recess in the road plugged by a preformed block of concrete bonded in position by a synthetic resin adhesive. When the repair is carried out at low temperature, the block is heated before being placed in the recess so as to heat up the resin and reduce the setting time. A machine for cutting away the concrete has a frame, a first carriage reciprocable in one direction on the frame, a second carriage reciproc...

A method and apparatus for building roads including the steps of dipping special corrugated units into cold asphalt, arranging the dip coated units into a generally flat, planar continuous reinforcement, and pouring paving material over and through said reinforcement to establish a reinforced pavement.