Abstract:
An improved friction material is described, comprising a binding composition based on a hydraulic binder, and its use in brake pads and industrial applications.
Abstract:
A friction material is disclosed comprising a binding composition based on a hydraulic binder and its use in brake pads and industrial applications.
Abstract:
Object of the present invention is a cementitious product for ornamental, non- structural use, in particular for applications with aesthetic and decorative purposes in integrated architecture. It is produced by mould casting of a fluid composition comprising: I. a hydraulic binder II. one or more aggregates III. an anti-shrinkage agent IV. a superfluidifying agent V. water, wherein at least one insert in hydrophobic material previously fixed to the inside of the mould remains incorporated as visible marquetry in the product after extraction from the mould.
Abstract:
The invention relates to a cementitious composition suitable to be moulded, in particular injection-moulded, to make a manufactured product with arithmetic average surface roughness Ra not higher than 500 nm and flexural tensile strength not lower than 5 MPa, measured after 28 days of curing, the fluidity of the composition, measured according to the method of standard UNI 7044, being not lower than 185 mm, characterised in that it comprises at least: I. a hydraulic binder II. one or more aggregates III. an anti-shrinkage agent IV. a superplasticiser agent V. fibres VI. water, wherein said fibres are made of an amorphous metal material consisting of an alloy with composition (Fe, Cr) 80 (P, C, Si) 20 in form of flexible lamellae of length equal to at least 10 mm and elastic modulus equal to at least 80000 MPa, present in the composition in amounts by weight of less than 4% with respect to the weight of the composition.
Abstract:
The invention describes a decorated concrete product, characterized in that it comprises at least one marquetry produced through the steps of: a) carving one or more points of the product surface forming a hollow seat according to a predetermined pattern; b) filling said carved hollow seat for producing a marquetry according to such pattern, either by means of b') in situ molding of material, or by means of b") housing of a preformed material according to a pattern complementary to the pattern of said hollow seat.
Abstract:
The object of the present invention is the manufacture of a cementitious item through mold casting of a fluid composition comprising a hydraulic binder, one or more aggregates, an anti- shrinkage agent, a superplasticizer agent and water. The item (1) according to the invention comprises at least a first portion (15) in relief with respect to at least one second portion (25) and wherein the surface roughness of said first portion (15) is less than the surface roughness of said second portion (25). According to the invention, said first portion (15) is obtainable from the solidification of said fluid composition in contact with a polymeric material applied to the surface of a half-mold (10) of said mold, while the second portion (25) is obtainable from the solidification of the fluid composition in contact with a portion of an adhesive film (20) applied to the polymeric material or to the surface of said half-mold (10).
Abstract:
Aim of the present invention is to obtain cementitious products having smooth, planar surfaces and low thickness for applications having aesthetic purpose, of integrated architecture or as substrates, for example for a thin-film photovoltaic unit, with controlled curling and surface roughness, manufactured by mould casting of a fluid composition comprising: I. a hydraulic binder; II. one or more aggregates; III. an anti-shrinkage agent; IV. a superplasticizer agent; V. water, wherein the percentage by weight of said hydraulic binder in the composition is lower than that of said aggregates, and wherein said aggregates have a maximum diameter d max not greater than one third of the thickness of the product, the final product thus having an arithmetic mean surface roughness Ra not greater than 500 nm and curling not greater than 1500 micron.