Abstract: New photocatalytic cement compositions are disclosed. These contain a superfluidizing agent, a cellulosic ether with a defined viscosity, an adhesive polymer, and a lattice, as well as other standard ingredients for photocatalytic cements. The compositions are free of starch and its chemically modified derivatives.

Abstract: A dry cement mix based on a hydraulic binder and a glass aggregate for forming light concretes with low thermal conductivity, characterized in that said glass aggregate comprises a fine fraction consisting of granulated aggregate with a particle size from 0.5 to 2 mm, and a coarse fraction consisting of crushed aggregate with a particle size from 4 to 20 mm, obtaining for said glass aggregate a well-defined overall particle size distribution.

Abstract: The present invention relates to a solid mixture and a coating or painting based on a sulfo-aluminous or sulfo-ferroaluminous clinker, the relative use as coating or painting of cementitious- and non-cementitious-based supports, in particular as coating or painting of cementitious-based pipes.

Abstract: New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, followed by accurately washing the solid obtained, drying it and calcining it. A composite is obtained containing limestone, titanium dioxide and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

Abstract: New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, recovering the product in particular conditions, drying it and calcining it. By operating in presence of sodium, a composite is obtained substantially free from titanium dioxide, containing limestone and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

Abstract: The present invention relates to a composite panel (10) based on cementitious mortar, passed through its entire thickness by a plurality of through openings (11), each of which is filled with a material transparent to light in the form of a preformed plate (12) housed in said opening (11), or formed in said opening, wherein said cement-based mortar contains at least 30 kg/m 3 of fibres selected from one or more of the following types: metallic fibres, steel fibres, glass fibres, polymeric resin fibres. The invention also relates to methods of production of said panel.

Abstract: There is described a cement composition, based on hydraulic binders, adapted to obtain coatings with a high photocatalytic activity and improved rheologic characteristics, including a hydraulic binder, a polycarboxylic or acrylic superfluidifying agent, a cellulosic ether with a viscosity in the range between 10000 and 120000 mPa·s, an adhesive agent, a calcareous, silicic or silicic-calcareous filler and a photocatalyst.

Abstract: The present invention relates to a substrate for a thin film photovoltaic module, characterized in that it is a cementitious product with average surface roughness Ra not higher than 500 nm. The invention also relates to the cementitious product as such, the thin film photovoltaic module comprising it, and a method of moulding both of them.

Abstract: The present invention concerns a hydraulic binder comprising a ground blast furnace slag in an amount comprised between 30% and 95% by mass on the binder, Portland cement clinker in an amount equal to or greater than 5% by mass on the binder, and at least one sulphate as activator, characterised in that said slag has the following properties and composition by mass: grinding fineness greater than 4000 cm2/g Blaine glass content greater than 80% SiO2: 30-40% Al2O3: 9-13% CaO: 34-42% with a (CaO+MgO)/(Al2O3+SiO2) ratio greater than 1; and in that said sulphate is contained in a total amount, expressed as SO3, comprised between 0.6% and 4.5% by mass on the binder.

Abstract: Herein described are cementitious products and articles of manufacture comprising a carbon-doped titanium dioxide, having long-term photocatalytic activity. The titanium dioxide contained therein may be obtained by irradiating titanium dioxide under specific conditions of wavelength, in presence of a gas flow comprising an inert gas and an organic compound. The titanium dioxide thus treated acquires a high and stable carbon content, maintaining the specific surface area thereof substantially unaltered. The cementitious products/articles of manufacture containing it have a high and efficient photocatalytic action.

Abstract: Described herein is a photocatalytic composite comprising a titanium dioxide supported on metakaolin. In comparison to known embodiments of the sector, the composite of the present invention makes it possible to obtain binders and derived products with high photocatalytic efficiency, even when using photocatalyst quantities which are lesser than those present in products of prior technical art.

Abstract: The present invention concerns a process for purifying a flow of combustion fumes from a clinker production plant comprising the following operating steps: a) removing dust at a temperature comprised between 250 and 400° C. from a flow of combustion fumes exiting from a suspension preheater with formation of a flow of combustion fumes free of dust; b) carrying out on said flow of combustion fumes free of dust a selective catalytic NOx reduction treatment with a reducing agent, with formation of a purified flow of combustion fumes. The present invention also concerns an apparatus for carrying out the aforementioned process.

Abstract: The present invention concerns an apparatus for the production of clinker from raw meal, comprising: a rotary kiln (8), optionally a precalciner; a multi-stage cyclone preheater (9) connected downstream of said rotary kiln (8) with respect to the direction of flow of the fumes (11) of a combustion taking place in said kiln (8); an electrofilter (10) connected downstream of said preheater (9) with respect to said direction of flow of the combustion fumes (11); characterised in that it comprises a first inlet (17) for feeding raw meal to said combustion fumes (11), said inlet (17) being arranged downstream of said preheater (9) and upstream of said electrofilter (10) with respect to said direction of flow of the combustion fumes (11), and in that it comprises a second inlet (18) for feeding partially preheated raw meal (14) from said electrofilter (10) to said preheater (9). The present invention also concerns an improved process for the production of clinker from raw meal.

Abstract: The present invention relates to a process for the production by extrusion of piping made of a cementitious material having a circular section and fine thickness, suitable for the channeling of liquids and gases at atmospheric operating pressure or slightly higher.

Abstract: The present invention concerns a composite cement paving with photocatalytic action for reducing urban polluting agents, composed of a bituminous or cement foundation, a resin having the function of interface, a superficial cement layer with photocatalytic properties able to reduce organic and inorganic polluting agents, said paving also comprising reinforcing materials and possible suitably positioned fibrous materials. The paving thus realised presents a strong photocatalytic action, prolonged overtime, even in the presence of high mechanical stress caused by heavy traffic.

Abstract: New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, recovering the product in particular conditions, drying it and calcining it. By operating in presence of sodium, a composite is obtained substantially free from titanium dioxide, containing limestone and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity.

Abstract: Paving blocks for photocatalytic paving comprising at least a base layer in cementitious material and a surface layer based on a cementitious composition comprising: at least a hydraulic binder, a photocatalyst capable of oxidizing organic and inorganic polluting substances present in the environment in the presence of environmental light, air and humidity, at least an aggregate, water and, optionally, a water reducing additive.

Abstract: The present invention relates to a solid mixture and a coating or painting based on a sulfo-aluminous or sulfo-ferroaluminous clinker, the relative use as coating or painting of cementitious- and non-cementitious-based supports, in particular as coating or painting of cementitious-based pipes.

Abstract: Described herein are new cementitious mortars with a high degree of fluidity and short consolidation times. The mortars contain water, a fast-setting cement, fluidifiers and/or superfluidifiers, setting regulators and aggregates having a specific granulometric distribution. The aggregates are made up of two fractions with different grain size such that the ratio between the characteristic grain diameters of the two fractions is comprised between 2.2 and 3.2. The new mortars thus obtained have values of fluidity 2-3 times higher than those of mortars produced with traditional aggregates; the increase in fluidity is obtained without increasing the water/cement ratio and without increasing the amount of fluidifiers present. The mortars produced according to the invention may be used to advantage in all applications in which it is required to associate a high degree of fluidity and a rapid consolidation.

Abstract: Described herein is the use of new cementitious mortars with a high degree of fluidity and short consolidation times in the production of cementitious products by means of pouring in foundry moulds. The mortars used contain water, a fast-setting cement, fluidifiers and/or superfluidifiers, setting regulators, and aggregates having a specific granulometric distribution. The aggregates are made up of two fractions with different grain size such that the ratio between the characteristic grain diameters of the two fractions is comprised between 2.2 and 3.2. The new mortars thus obtained have values of fluidity 2-3 times higher than those of mortars produced with traditional aggregates.