Patents Assigned to Lafarge Materiaux de Specialites
  • Patent number: 6189287
    Abstract: A method for producing a floor by casting a concrete slab with a concrete composition having a water/cement ratio of 0.4-0.7 and a minimum compressive strength no lower than 10 MPa, and depositing a first covering layer on the freshly cast concrete slab as soon as the slab is capable of bearing the weight of a man walking thereon without being damaged, or once the compressive strength of the slab concrete has reached a value of 0.15-0.4 kg/cm2. Said covering layer is based on a self-levelling composition. The method is useful for producing all kinds of floors for indoor, outdoor, industrial or commercial use.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: February 20, 2001
    Assignee: Lafarge Materiaux de Specialites S.A.
    Inventors: Jean-Paul Guerinet, François Segretain
  • Patent number: 6080234
    Abstract: An ultra-high performance composite concrete, with low cement and fiber content and having good mechanical properties as well as good impacts, shocks and projectile protection properties, includes hydraulic binder, aggregates, an admixture of metal fibers. Particularly, the composite concrete includes 70% to 85% of particles (A) having a particle size distribution which ranges from 0.01 to 3 mm up to particle size distribution which ranges from 0.01 to 0.50 mm; 2% to 10% of particles (B) having particle size of between 0.01 and 1 .mu.m; 3% to 20% of hydraulic binder; 0.1 to 3% of a dispersant or plasticizer; 0.05% to 8.5% of fibers; and, mixing water, wherein the percentages being weight percentages based on the sum of the weights of constituents a) to d).
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: June 27, 2000
    Assignee: Lafarge Materiaux de Specialites
    Inventors: Bernard Clavaud, Gerard Cochet, Claudie Gnagne, Jean-Pierre Targe
  • Patent number: 5907003
    Abstract: The invention concerns paint compositions for providing road markings, in particular on wet roadways. The paint compositions essentially comprise: at least one unsaturated polyester; at least one ethylenically unsaturated monomer; at least one polymerization accelerator selected from toluidine derivatives; at least one colored pigment; at least one compound which can exude at the surface of the paint and prevent oxygen in the air from inhibiting polymerization; glass beads and dibenzoyl peroxide.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: May 25, 1999
    Assignee: Lafarge Materiaux De Specialites
    Inventors: Estelle Blot, Claude Stock
  • Patent number: 5848504
    Abstract: An industrial floor, comprising at least one covering layer on a new or existing concrete base, said covering being not bound to the concrete base and obtained from a composition based on at least one hydraulic binder, said floor further comprising, between the concrete base and the covering layer, from the upper face of the concrete base: (a) a smoothing layer enabling the flatness/roughness of said upper face to be less than 2 mm under a 2 meter rule; (b) on the smoothing layer, at least one separating layer for preventing the first covering layer from adhering to the smoothing layer on the base; (c) on the separating layer, at least one covering layer having a maximum of 30 mm.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: December 15, 1998
    Assignee: Lafarge Materiaux de Specialites
    Inventors: Jean-Paul Guerinet, Herve Nouailhetas
  • Patent number: 5663218
    Abstract: Process for protecting articles from shock comprising encasing such articles in a plurality of molded blocks of a composition capable of progressively and irreversibly deforming in response to such shocks, said composition comprising cellulosic fibers dispersed in a matrix of at least one non-hydrated hydraulic binder, wherein from 2.5 to 75 parts by weight of the cellulosic fibers are dispersed per 100 parts by weight of said binder, said composition, upon curing and drying, exhibiting a density between 0.15 and 0.60.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: September 2, 1997
    Assignee: Lafarge Materiaux de Specialites
    Inventor: Jacques Chappuis