Abstract: The assembly of a large size pneumatic tire for a heavy off the road vehicle and an annular bead seat for a bead of the tire is characterized by the fact that said annular bead seat has a lateral face terminating in a flange and an inner face with a heel portion adjacent said lateral face and a toe portion meeting at a vertex and forming in radial cross section the shape of a very open V open toward said bead, and said bead has a reinforcing bead wire so arranged that the median plane of the bead wire intersects the toe portion of the inner face at a distance from the vertex at least equal to one-tenth of the diameter of the cross-section of the bead wire, the outer surface of the bead being thus in permanent contact with the lateral face and the inner face of the annular bead seat and the assembly being slidably mountable on a wheel of the vehicle.

Abstract: Tire with a radial carcass reinforcement, a tread reinforcement and a tread having transverse grooves and a nongrooved portion arranged between the bottoms of the transverse grooves and the tread reinforcement is improved due to the fact that the tread comprises, in said non-grooved portion, at least one ply of relatively inextensible oblique wires or cables forming an angle of at most 60.degree. with the circumferential direction, the axial width of said ply being between 1/4 and 1/2 of the width of the tread.

Abstract: A process for producing hydraulic binders comprising essentially calcium and silicon oxides by adding, to a mixture composed of compounds containing oxygen, calcium, silicon, and optionally other elements which are normally encountered in conventional raw materials, particularly aluminium, at least one disturbing agent capable of modifying the crystallinity of the minerals normally formed by the firing of said mixture of compounds at high temperatures, firing said mixture of compounds containing said disturbing agent, and recovering a mineral product possessing hydraulic properties.