A fabric (10, 20, 30) adapted for the reinforcement of constructions such as of roads or pavements has a fabric width W2 in a transverse direction. The fabric (10, 20, 30) comprises a carrier (12, 22, 32). The fabric further comprises reinforcement elements (14, 24′, 24″, 34) extending over the fabric width and being fixed or bound to the carrier (12, 22, 32). The carrier (12, 22, 32) has a carrier width W1 that is smaller than the fabric width W2 so that the reinforcement elements (14, 24′, 24″, 34) protrude out of the carrier (12, 22, 32). The advantage is that when two neighbouring fabrics (40, 44) overlap, it is possible to avoid a double layer of carriers.

The non-corrosive micro rebar is an apparatus that reinforces concrete structures. The apparatus includes a central rod, a plurality of threads, and a plurality of channels. The central rod connects the plurality of threads to one another and allows the apparatus to be flexible within the concrete structure. The plurality of threads allows a concrete mixture to grip around the apparatus. The concrete mixture surrounds the apparatus by filling the plurality of channels. In order for apparatus to hold together the concrete structure, each of the plurality of threads includes a connecting rod and an anchoring bar. The plurality of threads laterally traverses along the central rod and is radially distributed about the central rod. The connecting bar is fixed to the central rod and is oriented perpendicular to the central rod. The connecting bar traverse across the connecting rod and is oriented concave with the connecting rod.

Fibers to be added to concrete to improve its properties are coated with an alkali-insoluble polymer, to provide adhesion of the fibers to the concrete. In a further improvement, nanoparticles are dispersed in an alkali-soluble polymer coating, and this is used to coat the fibers. When the fibers are mixed into the concrete mix, the nanoparticles are dispersed throughout the concrete, avoiding problems from agglomeration of the nanoparticles if simply added to the concrete mix.

The profiled metal fibre with a substantially rectangular cross-section, also with bent fibre ends in the form of a clip, is used to stabilise, bond, attach or join materials and construction materials such as concrete, wood, paper and the like. The fibre edges of the fibre outer surfaces extending in the longitudinal direction of the fibre are designed as edge surfaces (2) oriented at an angle to the fibre outer surfaces in the manner of a bevel. The two wider fibre outer surfaces (3.1, 3.2) of the rectangular fibre are provided with V-shaped channels (4) extending in the longitudinal direction, wherein the edge surfaces (2) are provided with projections (6) and the V-shaped channels (4) are provided with end zones (5) that bound their longitudinal extent. The projections form anchoring heads and the end zones form anchor surfaces with respect to the material to be stabilised, bonded or attached.

A method to strengthen or repair concrete and other structures comprises securing a plate having a shape memory alloy (SMA) wire embedded therein to a localized region of a structure. The SMA wire has a deformed shape configured for self-anchorage within the plate. The SMA wire is heated at or above an austenite transformation temperature, and the SMA wire resists shape recovery and remains self-anchored within the plate. Accordingly, a compressive force is generated within the SMA wire and transferred to the plate. At an interface between the plate and the localized region of the structure, the compressive force is transmitted from the plate to the structure, thereby providing localized prestressing of the structure.

The invention relates to a structure for the reinforcement of pavements. The structure is provided at predetermined positions with interruptions or with weakened zones. The invention further relates to a method of manufacturing such a structure and to a method of breaking up a pavement reinforced with such a structure.

A multi-axially braided reinforcement sleeve that provides a low cost, simpler method to form strong concrete columns for constructing buildings and other structures. The braided reinforcement sleeve provides structural support and the rebar normally embedded to provide structural support in concrete can be eliminated, preventing the possibility of rebar oxidation which might otherwise undermine the structural integrity of the column. The reinforcement sleeve is lightweight, easy to transport, and can be greatly reduced in size to facilitate transportation. The reinforcement sleeve and construction method can be utilized in many implementations, and can be particularly useful for constructing buildings or other structures in geographic areas that are subject to earthquakes and where low cost is important.

The method according to the invention for producing a prestressed concrete workpiece is characterized in that the prestress is created by a heat treatment, wherein the concrete and the reinforcement therefor are selected in such a way that, when cooling the concrete workpiece from an elevated temperature, the heat expansion coefficient of the concrete is less than that of the reinforcement, and in that, during cooling, the concrete and the reinforcement adhere sufficiently strongly to one another if, during cooling, the concrete is hydrated at least to such an extent in order to be able to expand the reinforcement on account of the different heat expansion coefficients, and in that the concrete, together with the reinforcement, is brought to the elevated temperature in such a way that and is hydrated during cooling at least to such an extent that it is prestressed by the reinforcement after cooling.

Provided is a novel metallic coarse aggregate for concrete which can be used as a coarse aggregate which is one of the essential constituents of concrete, can further improve the compressive strength and tensile strength of concrete, is less likely to be sedimented in fresh concrete, and has good productivity at a low cost. The metallic coarse aggregate for concrete includes a coarse aggregate body including a spherical cap portion bonded body having two hollow spherical cap portions and an annular portion protruding from a surface of the spherical cap portion bonded body so as to surround an outer periphery of the spherical cap portion bonded body, the annular portion having a shape in which a corner of a rectangular shape is bent upward or downward.

A cladding system for use on the external surface of a building structure that includes a continuous rail system to attach a cladding panel that interlocks with itself. The rail system includes a tongue and groove system to attach the cladding system to the building thereby avoiding the need to use discrete anchors. The cladding panel is formed of a high strength concrete matrix and, optionally, a plurality of twisted steel micro reinforcements (TSMR) dispersed therein.