A roofing tile composed of concrete material and a method for producing such a roofing tile. The concrete material contains a binder, a gravel, a light-weight aggregate, and added water. The roofing tile has at least one watercourse and a lateral interlocking joint having a covering fold and a water fold. The ratio of water to binder is less than 0.3, the light-weight aggregate is composed of a material that is hydrophobic and/or not hygroscopic, and the roofing tile has a density in the range of 1.6 g/cm.sup.3 to 1.9 g/cm.sup.3 after the hardening. The roofing tile has a thickness of 5 mm to 9 mm, preferably 7 mm to 8 mm, in the highly loaded regions, preferably in the region of the watercourse.

A cement-based tile formed from a mixture comprising: a cement in the range of about 0.1 to 88% by wet weight percent; a secondary material in the range of about 0.1 to 50% by wet weight percent, the secondary material comprising limestone, sand, silica sand, gypsum, silica fume, fumed silica, Plaster of Paris, calcium carbonate, fly ash, slag, rock, or a combination thereof; a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent, the reinforcement fiber comprising cellulose fiber, glass fiber, plastic fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, homopolymer acrylic fiber, alkali-resistant fiber, or a combination thereof; a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent; a water in the range of 10 to 60% of a total wet material weight; and wherein the mixture is extruded or molded to form the cement-based tile.

A polypropylene fiber including: a polypropylene matrix, at least a surface modifier, and at least an additive selected from surfactants, lubricating agents or mixtures thereof. A method of producing polypropylene fibers by (i) mixing a polypropylene with a surface modifier in extrusion, (ii) melt spinning the composition obtained in step (i) to produce the fibers, where a surfactant is added to step (i) and/or a lubricant is applied to the fibers during step (ii). A fiber cement-reinforced composite including a cementitious matrix, a cellulosic component, optionally, a limestone component and a polypropylene fiber comprising: a polypropylene matrix, at least a surface modifier, at least one additive selected from surfactants, lubricating agents and mixtures thereof. An article comprising the fiber cement-reinforced composite and a roof tile comprising the fiber cement-reinforced composite.

A composition contains at least one microorganism which can form a phosphate or carbonate precipitate in an alkaline medium, and at least one calcium source. The composition has at least one silicon compound having at least one Si-atom, at least one C-atom, and at least one H-atom. The composition can be used in a method for producing a construction product.

A composition for a cementitious roofing tile, the composition includes a cement binder making up 10% to 20% of a total composition weight; a fine aggregate sand making up 20% to 25% of the total composition weight; an aggregate making up 12% to 20% of the total composition weight; a crushed glass making up 15% to 60% of the total composition weight; an alkali-silica reaction (ASR) suppressant; and a predetermined volume of water; the aggregate is selected from one of perlite, vermiculite, hemp, expanded clay, coco coir, shale and slate; and the fine aggregate sand has an average particle size from a minimum of 1 micron to a maximum size of 2 mm; and the crushed glass has an average particle size that ranges from 1 micron to a maximum of 5 mm.

Compositions such as concrete compositions are described for use in building materials and products. The composition may comprise an aggregate composition comprising a particulate suppressing component and a cement. The composition may have an impact resistance of at least Class 1 as measured under ANSI/FM 4473. Methods of preparing and using such compositions are also described.

A smart roof system and method comprising cementitious sheathing sheets for a roof cover that can be installed directly onto the wood roof sheathing of a structure or home. Said cementitious sheathing sheets are laid over wood roof sheathing directly with permanent adhesive. An aluminum expansion joint is installed to serve as an expansion joint between said cementitious sheathing sheets and to provide support for solar panels. Aluminum expansion joints have a lower lip and an upper lip, a lower lip of the aluminum expansion joints serves to support cementitious sheathing sheets over the lower lip with adhesive and create a joint directly over the wood roof sheathing. The cementitious sheathing sheets are laid on the wood roof sheathing with an adhesive designed to adhere in a permanent manner to the cementitious sheathing sheets. A next cementitious sheet is then installed into the lower lip of the aluminum expansion joints and overlap on top of the previous cementitious sheet, bonding by the permanent adhesive. The procedure is repeated forming the roof from lower elevation to higher roof elevation, thereby water will flow over the overlapping sections of cementitious sheathing sheets.

Some embodiments relate to a method for producing a rubber-containing asphalt composition. The method for producing the rubber-containing asphalt composition comprises obtaining a rubber component; obtaining an unoxidized asphalt; mixing the rubber component and the unoxidized asphalt to obtain an unoxidized asphalt composition; oxidizing the unoxidized asphalt composition to obtain an oxidized asphalt composition; and forming a roofing shingle from the oxidized asphalt composition.

A cement-based tile formed from a mixture comprising: a cement in the range of about 0.1 to 88% by wet weight percent; a secondary material in the range of about 0.1 to 50% by wet weight percent, the secondary material comprising limestone, sand, silica sand, gypsum, silica fume, fumed silica, Plaster of Paris, calcium carbonate, fly ash, slag, rock, or a combination thereof; a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent, the reinforcement fiber comprising cellulose fiber, glass fiber, plastic fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, homopolymer acrylic fiber, alkali-resistant fiber, or a combination thereof; a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent; a water in the range of 10 to 60% of a total wet material weight; and wherein the mixture is extruded or molded to form the cement-based tile.

A roofing shingle is provided that comprises a shingle coating composition including a filler and a bituminous composition comprising at least one bitumen base, at least one compound of general Formula (I): Ar1R.sub.1Ar.sub.2 (I), and at least one compound of general formula (II): R.sub.2(NH).sub.nCONHX(NHCO).sub.p(NH).sub.nR.sub.2 (II). The invention also concerns a process for the preparation of a roofing shingle.