Abstract: A method for manufacturing a pre-fabricated element for construction and electricity production includes providing a formwork mould; introducing a photovoltaic module into the formwork mould, and for this purpose vertically positioning the photovoltaic module against or in replacement of one of the walls of the formwork mould, the front face of the at least one photovoltaic module being arranged so as to face an area of the space located outside the mould; depositing an adhesive structural material or a mixture of adhesive structural materials on all or part of the rear face of the at least one photovoltaic module arranged so as to face an area of the space located inside the mould, the adhesive structural material including at least one polymer from the epoxide, polyurethane, acrylic, or styrene-acrylic family, and pouring fresh concrete into the formwork mould so as to cover the adhesive structural material.

Abstract: In a method of manufacturing a concrete element having a functional layer, a rear side of the functional layer being bonded to the concrete element by an adhesive, the roughness of the rear side of the functional layer is increased by sand blasting, wherein the sand blasting is carried out for obtaining a surface roughness Ra of the rear side of the functional layer of between 1.5 ?m and 6 ?m.

Abstract: A green construction element forming a vertical surface of the construction, the element including a porous concrete element and a coating on at least one of the surfaces of the porous concrete, directly in contact with the surface, the coating, which is favourable to the development of plants, including a plant or a seed of the plant, and the porous concrete having a porosity of between 10% and 40% in the hardened state thereof, before application of the coating, so as to be able to render the vertical surface of the construction green.

Abstract: A method for manufacturing a pre-fabricated element for construction and electricity production includes providing a formwork mould; introducing a photovoltaic module into the formwork mould, and for this purpose vertically positioning the photovoltaic module against or in replacement of one of the walls of the formwork mould, the front face of the at least one photovoltaic module being arranged so as to face an area of the space located outside the mould; depositing an adhesive structural material or a mixture of adhesive structural materials on all or part of the rear face of the at least one photovoltaic module arranged so as to face an area of the space located inside the mould, the adhesive structural material including at least one polymer from the epoxide, polyurethane, acrylic, or styrene-acrylic family, and pouring fresh concrete into the formwork mould so as to cover the adhesive structural material.

Abstract: A hydraulic binder which includes a clinker with a specific shape, the clinker including as main phases, given as weight percentages relative to the total weight of the clinker: (i) 70 to 95% of a belite phase having a particle size such that the Dv50 ranges from 5 to 15 ?m; (ii) 5 to 30% of a calcium aluminoferrite phase; and (iii) less than 5% of minor phases; the clinker having an Al2O3/Fe2O3 weight ratio of less than 1.5; and the clinker including less than 5% of alite phase and less than 5% of calcium sulphoaluminate phase; and at least 0.5% dry weight of an activator made of calcium sulphate, as a weight percentage relative to the total weight of phases (i) to (iii).

Abstract: A hydraulic binder which includes a clinker with a specific shape, the clinker including as main phases, given as weight percentages relative to the total weight of the clinker: (i) 70 to 95% of a belite phase having a particle size such that the Dv50 ranges from 5 to 15 ?m; (ii) 5 to 30% of a calcium aluminoferrite phase; and (iii) less than 5% of minor phases; the clinker having an Al2O3/Fe2O3 weight ratio of less than 1.5; and the clinker including less than 5% of alite phase and less than 5% of calcium sulphoaluminate phase; and at least 0.5% dry weight of an activator made of calcium sulphate, as a weight percentage relative to the total weight of phases (i) to (iii).

Abstract: A concrete having a smooth surface, which is wholly or partly coated with a polymer film obtained by polymerisation under the action of radiation, where the film is itself wholly or partly coated with a thin photovoltaic film.

Abstract: A method includes using an element which includes a monoblock concrete body with a volume greater than 1 L and a surface porosity greater than 8%, which body includes in the body and/or on a surface thereof a compound having a BET specific surface greater than 100 m2/g, and which element does not include a photocatalytic agent, to absorb from the atmosphere a gas selected from the group consisting of nitrogen oxides, carbon oxides, sulphur oxides, and ozone, or a volatile organic compound.

Abstract: The invention relates to compositions intended to be applied to the surfaces of freshly poured mortars and/or concretes, before the beginning of the setting, in order simultaneously to prevent the evaporation of the water present in said mortars and/or concretes, which is necessary for their setting and then for their hardening, and in order to create, on said treated surfaces, high adhesiveness for the finishing materials intended to cover them, these compositions being provided in the form of aqueous emulsions comprising at least one paraffin wax (a), alone or in combination with at least one hydrocarbon compound (b) and/or with at least one other hydrocarbon compound (c) different from the hydrocarbon compound (b), and also comprising at least one latex (d) formed of a colloidal aqueous emulsion of at least one polymer, and at least one pulverulent inorganic or organic filler (e).

Abstract: A method includes using an element which includes a monoblock concrete body with a volume greater than 1 L and a surface porosity greater than 8%, which body includes in the body and/or on a surface thereof a compound having a BET specific surface greater than 100 m2/g, and which element does not include a photocatalytic agent, to absorb from the atmosphere a gas selected from the group consisting of nitrogen oxides, carbon oxides, sulphur oxides, and ozone, or a volatile organic compound.

Abstract: The invention relates to compositions intended to be applied to surfaces of freshly poured mortar and/or concrete mixes, before the start of setting, in order to prevent the evaporation of water needed for them to set and harden, which are distinguished by the fact that, for the purpose of making them synergistic with regard to water retention, they are composed, in the form of aqueous emulsions, of: a) at least one petroleum-derived or synthetic paraffin wax containing, as a mixture, saturated and unsaturated aliphatic hydrocarbons of general formulae CnH2n+2 and CnH2n for which n is at least equal to 30 and the melting point of which is between 40° C. and 75° C.

Abstract: A demolding composition, to be used for the production of parts of hydraulic-setting material, includes at least one oil and at least one calcium salt, calcium borates and calcium salts of fatty acids being excluded from the at least one calcium salt. A process for the preparation of a part molded in hydraulic-setting material, includes coating sides of an appropriate mold with the demolding composition; introducing a freshly-prepared hydraulic-setting composition; and removing the part from the mold after hardening and optional curing of the composition.

Abstract: The invention relates to compositions intended, to be applied to the surfaces of freshly poured mortars and/or concretes, before the beginning of the setting, in order simultaneously to prevent the evaporation of the water present in said mortars and/or concretes, which is necessary for their setting and then for their hardening, and in order to create, on said treated surfaces, high adhesiveness for the finishing materials intended to cover them, these compositions being provided in the form of aqueous emulsions comprising at least one paraffin wax (a), alone or in combination with at least one hydrocarbon compound (b) and/or with at least one other hydrocarbon compound (c) different from the hydrocarbon compound (b), and also comprising at least one latex (d) formed of a colloidal aqueous emulsion of at least one polymer, and at least one pulverulent inorganic or organic filler (e).

Abstract: The invention relates to compositions intended to be applied to surfaces of freshly poured mortar and/or concrete mixes, before the start of setting, in order to prevent the evaporation of water needed for them to set and harden, which are distinguished by the fact that, for the purpose of making them synergistic with regard to water retention, they are composed, in the form of aqueous emulsions, of: a) at least one petroleum-derived or synthetic paraffin wax containing, as a mixture, saturated and unsaturated aliphatic hydrocarbons of general formulae CnH2n+2 and CnH2n for which n is at least equal to 30 and the melting point of which is between 40° C. and 75° C.

Abstract: A demoulding composition, to be used for the production of parts of hydraulic-setting material, includes at least one oil and at least one calcium salt, calcium borates and calcium salts of fatty acids being excluded from the at least one calcium salt. A process for the preparation of a part moulded in hydraulic-setting material, includes coating sides of an appropriate mould with the demoulding composition; introducing a freshly-prepared hydraulic-setting composition; and removing the part from the mould after hardening and optional curing of the composition.

Abstract: The invention relates to compositions intended to be applied to the surfaces of freshly poured mortars and/or concretes, before the beginning of the setting, in order simultaneously to prevent the evaporation of the water present in said mortars and/or concretes, which is necessary for their setting and then for their hardening, and in order to create, on said treated surfaces, high adhesiveness for the finishing materials intended to cover them, these compositions being provided in the form of aqueous emulsions comprising at least one paraffin wax (a), alone or in combination with at least one hydrocarbon compound (b) and/or with at least one other hydrocarbon compound (c) different from the hydrocarbon compound (b), and also comprising at least one latex (d) formed of a colloidal aqueous emulsion of at least one polymer, and at least one pulverulent inorganic or organic filler (e).

Abstract: The invention relates to the use of polycarboxylates of polyoxyalkylene for the production of compositions of concrete wit a slump value T0 of between 12 and 20 cm inclusive, for improving the retention of fluidity with time. The invention further relates to fresh concrete compositions with such a slump value containing said dispersant.

Abstract: The invention relates to compositions intended to be applied to the surfaces of freshly poured mortars and/or concretes, before the beginning of the setting, in order simultaneously to prevent the evaporation of the water present in said mortars and/or concretes, which is necessary for their setting and then for their hardening, and in order to create, on said treated surfaces, high adhesiveness for the finishing materials intended to cover them, these compositions being provided in the form of aqueous emulsions comprising at least one paraffin wax (a), alone or in combination with at least one hydrocarbon compound (b) and/or with at least one other hydrocarbon compound (c) different from the hydrocarbon compound (b), and also comprising at least one latex (d) formed of a colloidal aqueous emulsion of at least one polymer, and at least one pulverulent inorganic or organic filler (e).

Abstract: The invention relates to compositions intended to be applied to surfaces of freshly poured mortar and/or concrete mixes, before the start of setting, in order to prevent the evaporation of water needed for them to set and harden, which are distinguished by the fact that, for the purpose of making them synergistic with regard to water retention, they are composed, in the form of aqueous emulsions, of: a) at least one petroleum-derived or synthetic paraffin wax containing, as a mixture, saturated and unsaturated aliphatic hydrocarbons of general formulae CnH2n+2 and CnH2n for which n is at least equal to 30 and the melting point of which is between 40° C. and 75° C.