Abstract: A roof vent for a contoured metal surface. The roof vent includes a base or foot having one or more recessed channels that extend between opposing edges of the foot. The recessed channels are sized and shaped to receive correspondingly shaped ridges of the contoured metal roof surface.

Abstract: In various embodiments, a process is described for the preparation of a concrete mixture in a Ready-mix or for an installation. A quantity of amorphous silica is added with an average particle size in the range of from about 1 to about 55 nanometers and/or wherein the surface area of the particles of the amorphous silica is in the range of from about 300 to about 900 m2/g. The amorphous silica may be added in colloidal form or otherwise, and is added at a particular stage to ensure efficacy.

Abstract: A method for preparing and finishing concrete is disclosed, comprising preparing a cement surface by a process comprising the admixture addition, to an industrial concrete mixer/pourer, of a formulation comprising nanosilica, after some or all water is combined and mixed with cement mix, sand and aggregate; followed by pouring and floating; followed by the addition, before or during combination, to the concrete surface, of a formulation comprising water, an alpha-hydroxy acid, a glycol alkyl ether and a polyethylene glycol.

Abstract: A method for the preparation of concretes with improved wear resistance. The method involves the use of colloidal silica, which is added to a concrete mixture after mixing, in conjunction with a concrete cutter, which is added to the concrete mixture after the addition of the colloidal silica.

Abstract: A method for the preparation of industrial-scale concrete installations with improved compression strength, curling, shrinking and cracking characteristics, the method comprising the addition of nanosilica particulate, and more preferably, colloidal amorphous silica, having specific size and surface area characteristics, to a concrete mix after water has been added to the mix and the mix has been agitated.

Abstract: In various embodiments, a process is described for the preparation of a concrete mixture in a Ready-mix or for an installation. A quantity of amorphous silica is added with an average particle size in the range of from about 1 to about 55 nanometers and/or wherein the surface area of the particles of the amorphous silica is in the range of from about 300 to about 900 m2/g. The amorphous silica may be added in colloidal form or otherwise, and is added at a particular stage to ensure efficacy.

Abstract: Vents are disclosed for covering openings on roofs. The disclosed vents cover openings on metal roofs and prevent moisture and objects from entering the opening while allowing air to pass therethrough. The vents disclosed herein also prevent moisture from entering the building through openings that can be created when the vents are attached to a roof. The vents include a cap, a collar, and a flashing configured to contact the roof. The vents can also include a screen placed between the cap and the collar. The collar can have arms formed on an upper portion thereof to facilitate connection of the collar to the cap. Feet can be formed on a bottom portion of the collar. Once the vent is fully assembled, the feet can be positioned underneath the flashing and can be the main connection point of the vent to a roof. Due to the design of this assembly, fasteners pass through the feet providing a sound and secure attachment to the roof.

Abstract: A roof vent for a contoured metal surface. The roof vent includes a base or foot having one or more recessed channels that extend between opposing edges of the foot. The recessed channels are sized and shaped to receive correspondingly shaped ridges of the contoured metal roof surface.

Abstract: A method for the preparation of industrial-scale concrete installations with improved compression strength, curling, cracking and cracking characteristics, the method comprising the addition of nanosilica particulate, and more preferably, colloidal amorphous silica, having specific size and surface area characteristics to a concrete mix after water has been added to the mix and the mix has been agitated.

Abstract: Vents are disclosed for covering openings on roofs. The disclosed vents cover openings on metal roofs and prevent moisture and objects from entering the opening while allowing air to pass therethrough. The vents disclosed herein also prevent moisture from entering the building through openings that can be created when the vents are attached to a roof. The vents include a cap, a collar, and a flashing configured to contact the roof. The vents can also include a screen placed between the cap and the collar. The collar can have arms formed on an upper portion thereof to facilitate connection of the collar to the cap. Feet can be formed on a bottom portion of the collar. Once the vent is fully assembled, the feet can be positioned underneath the flashing and can be the main connection point of the vent to a roof. Due to the design of this assembly, fasteners pass through the feet providing a sound and secure attachment to the roof.

Abstract: A method for the preparation of concretes with improved wear resistance. The method involves the use of colloidal silica, which is added to a concrete mixture after mixing, in conjunction with a concrete cutter, which is added to the concrete mixture after the addition of the colloidal silica.

Abstract: Vents are disclosed for covering openings on roofs. The disclosed vents cover openings on metal roofs and prevent moisture and objects from entering the opening while allowing air to pass therethrough. The vents disclosed herein also prevent moisture from entering the building through openings that can be created when the vents are attached to a roof. The vents include a cap, a collar, and a flashing configured to contact the roof. The vents can also include a screen placed between the cap and the collar. The collar can have arms formed on an upper portion thereof to facilitate connection of the collar to the cap. Feet can be formed on a bottom portion of the collar. Once the vent is fully assembled, the feet can be positioned underneath the flashing and can be the main connection point of the vent to a roof. Due to the design of this assembly, fasteners pass through the feet providing a sound and secure attachment to the roof.

Abstract: A method for the preparation of industrial-scale concrete installations with improved compression strength, curling, cracking and cracking characteristics, the method comprising the addition of nanosilica particulate, and more preferably, colloidal amorphous silica, having specific size and surface area characteristics to a concrete mix after water has been added to the mix and the mix has been agitated.

Abstract: A method for preparing and finishing concrete is disclosed, comprising preparing a cement surface by a process comprising the admixture addition, to an industrial concrete mixer/pourer, of a formulation comprising nanosilica, after some or all water is combined and mixed with cement mix, sand and aggregate; followed by pouring and floating; followed by the addition, before or during combination, to the concrete surface, of a formulation comprising water, an alpha-hydroxy acid, a glycol alkyl ether and a polyethylene glycol.

Abstract: A roof flashing that can be installed around a pipe, instead of over the pipe, is provided. The roof flashing can include a collar, a base, a foot, and a longitudinal opening. The collar can have a conical shape. The base can have a top edge and a bottom edge, the top edge of the base coupled to a bottom edge of the collar, the bottom edge of the base having a diameter larger than a diameter of the top edge of the base. The foot can be coupled to the bottom edge of the base and extend outwardly from the bottom edge of the base. The longitudinal opening can extend from an apex of the collar to an edge of the foot, and a width of the longitudinal opening can increase when first and second edges of the opening are pulled away from each other.

Abstract: A roof flashing that can be installed around a pipe, instead of over the pipe, is provided. The roof flashing can include a collar, a base, a foot, and a longitudinal opening. The collar can have a conical shape, and the base can have a top edge and a bottom edge such that the top edge of the base is coupled to a bottom edge of the collar. The foot can be coupled to the bottom edge of the base and extend outwardly from the bottom edge of the base. The longitudinal opening can extend from an apex of the collar to an edge of the foot and can include first, second, and third sections. A width of the longitudinal opening can increase when first and second edges of the opening are pulled away from each other.

Abstract: A roof flashing that can be installed around a pipe, instead of over the pipe, is provided. The roof flashing can include a collar, a base, a foot, and a longitudinal opening. The collar can have a conical shape. The base can have a top edge and a bottom edge, the top edge of the base coupled to a bottom edge of the collar, the bottom edge of the base having a diameter larger than a diameter of the top edge of the base. The foot can be coupled to the bottom edge of the base and extend outwardly from the bottom edge of the base. The longitudinal opening can extend from an apex of the collar to an edge of the foot, and a width of the longitudinal opening can increase when first and second edges of the opening are pulled away from each other.

Abstract: A roof flashing that can be installed around a pipe, instead of over the pipe, is provided. The roof flashing can include a collar, a base, a foot, and a longitudinal opening. The collar can have a conical shape. The base can have a top edge and a bottom edge, the top edge of the base coupled to a bottom edge of the collar, the bottom edge of the base having a diameter larger than a diameter of the top edge of the base. The foot can be coupled to the bottom edge of the base and extend outwardly from the bottom edge of the base. The longitudinal opening can extend from an apex of the collar to an edge of the foot, and a width of the longitudinal opening can increase when first and second edges of the opening are pulled away from each other.

Abstract: A roof flashing for forming a weather-proof seal about pipes of different diameters extending through openings in building structures, the flashing has a collar having a conical shape with a bottom edge and an apex end for passage of the pipe, the collar comprising a wall of elastomeric material wherein the wall has annular grooves forming tear lines for removing a portion of the collar allowing the collar to sealingly engage different diameter pipes. In addition, the roof flashing has a base having a tapered cylindrical shape formed by a wall of elastomeric material, the base having an opening formed by a top edge wherein the top edge is coupled to the bottom edge of the collar, the base further having a bottom edge.

Abstract: A roof flashing for forming a weather-proof seal about pipes of different diameters extending through openings in building structures, the flashing has a collar having a conical shape with a bottom edge and an apex end for passage of the pipe, the collar comprising a wall of elastomeric material wherein the wall has annular grooves forming tear lines for removing a portion of the collar allowing the collar to sealingly engage different diameter pipes. In addition, the roof flashing has a base having a tapered cylindrical shape formed by a wall of elastomeric material, the base having an opening formed by a top edge wherein the top edge is coupled to the bottom edge of the collar, the base further having a bottom edge.