Systems and methods for reinforcing physical structures with composite reinforcement systems are disclosed herein. According to aspects of the present disclosure, a composite reinforcement system includes a carrier formed of a plurality of fibers and a blend of at least two reagents impregnated within the carrier. The at least two reagents are chemically configured to react to form a moisture-curable prepolymer. One reagent of the at least two reagents is an isocyanate, and another reagent of the at least two reagents is an aromatic-group-containing polyol.

A repair wrap for repairing or strengthening an item. The repair wrap includes a fabric, where the fabric includes one or more fibers. The repair wrap also includes a film disposed laterally within the fabric. The repair wrap further includes a hardening material disposed in the fabric. The fabric is configured to be wrapped around a portion of an item. Curing the hardening material is configured to form a shell about the portion of the item.

A pipe repair apparatus is provided. The pipe repair apparatus includes a cap. The cap includes a cylinder shape having a front edge forming an opening into the cap, a rear edge forming an opening into the cap, and at least a first side edge and a second side edge. The cap may further include a cap flange formed at the front edge having a first bend in a direction towards a central longitudinal axis of the cap and a second bend in a direction away from the central longitudinal axis of the cap. The cap is sized to fit over a pipe so that the first side edge overlaps the second side edge. A clamp secures the cap to the pipe.

A pipe repair apparatus is provided. The pipe repair apparatus includes a cap. The cap includes a cylinder shape having a front edge forming an opening into the cap, a rear edge forming an opening into the cap, and at least a first side edge and a second side edge. The cap may further include a cap flange formed at the front edge having a first bend in a direction towards a central longitudinal axis of the cap and a second bend in a direction away from the central longitudinal axis of the cap. The cap is sized to fit over a pipe so that the first side edge overlaps the second side edge. A clamp secures the cap to the pipe.

Systems and methods for detecting and sealing a leak in a low-pressure transportation system including a low-pressure environment having a wall with an outer and an inner surface and an interior, and a hole passing through the wall that defines the leak in the low-pressure transportation system. The systems and methods including at least two sensors provided within the interior of the low-pressure environment that are structured and arranged to detect the leak, a controller in communication with the at least two sensors, a membrane deployer in communication with the controller, and a sealing membrane deployable by the membrane deployer and structured and arranged to provide a pressure-tight seal over the hole on the outer surface of the wall to seal the leak.

A reinforced pipe and a method of preparing the reinforced pipe are provided. The reinforced pipe has repair area where a wrinkle bend is present in a center section of the repair area. The reinforced pipe comprises a unidirectional fabric circumferentially wrapped around the repair area of the pipe so as to result in multiple layers of the unidirectional fabric around the repair area. The unidirectional fabric is composed of high-performance fibers with at least 90% of the high-performance fibers oriented in the 90° direction, and the unidirectional fabric is wrapped such that the high-performance fibers run in the axial direction. The reinforced pipe further comprises a bidirectional fabric wrapped of over the unidirectional fabric such the at least one layer of bidirectional fabric is wrapped over the unidirectional fabric.

A reinforced pipe and a method of preparing the reinforced pipe are provided. The reinforced pipe has repair area where a circumferential defect is present in a center section of the repair area. The reinforced pipe comprises a unidirectional fabric circumferentially wrapped around the repair area of the pipe so as to result in multiple layers of the unidirectional fabric around the repair area. The unidirectional fabric is composed of high-performance fibers with at least 90% of the high-performance fibers oriented in the 90° direction, and the unidirectional fabric is wrapped such that the high-performance fibers run in the axial direction. The reinforced pipe further comprises a bidirectional fabric wrapped of over the unidirectional fabric such the at least one layer of bidirectional fabric is wrapped over the unidirectional fabric.

Provided is a liquid leakage repair material, including: a curable composition, wherein a liquid absorption rate of the liquid leakage repair material after cured is lower than 10%.

A non-welded type branch piping reinforcement apparatus capable of preventing damage to a branch pipe system by increasing the strength of the branch pipe system by covering and protecting the branch pipe system connected to a header pipe, by a joint clamp, a connection pipe clamp, and a valve clamp includes: a joint clamp arranged to cover the branch pipe joint and the connection pipe and having an arc-shaped cross section; a connection pipe clamp arranged to cover the connection pipe and having an arc-shaped cross section; and a valve clamp arranged to cover the connection pipe and the valve and having an arc-shaped cross section, wherein one end of the connection pipe clamp is connected to the joint clamp and the other end of the connection pipe clamp is connected to the valve clamp.

Techniques for implementing and/or operating a pipeline system that includes a pipe segment and a pipe repair assembly. The pipe segment includes tubing having an inner barrier layer that defines a pipe bore through the pipe segment, an intermediate layer including solid strip wraps implemented around the inner barrier layer such that gaps are defined between adjacent solid strip wraps, and an outer barrier layer implemented around the intermediate layer. The pipe repair assembly includes an auxiliary patch secured at least across a break in a solid strip wrap in the intermediate layer of the pipe segment that is exposed by a hole in the outer barrier layer of the pipe segment; and outer material disposed over the auxiliary patch via an injection machine to fill the hole in the outer barrier layer of the pipe segment.