Disclosed are an improved reinforcing bar and methods for manufacturing the same. The improved reinforcing bar is made from a high strength material, and has a circular or oval or elliptical cross section and deformation of the axis in a single plane or in multiple planes. The methods for manufacturing the improved reinforcing bar include a hot working process and a cold working process. The undulating/wavy bar with axis deformation can improve the anchorage of the bar in concrete and the bond strength without comprising any surface modifications. The amplitude and pattern of axis deformation of the bar can avoid stress concentration and its ill effects.

Disclosed are an improved reinforcing bar and methods for manufacturing the same. The improved reinforcing bar is made from a high strength material, and has a circular or oval or elliptical cross section and deformation of the axis in a single plane or in multiple planes. The methods for manufacturing the improved reinforcing bar include a hot working process and a cold working process. The undulating/wavy bar with axis deformation can improve the anchorage of the bar in concrete and the bond strength without comprising any surface modifications. The amplitude and pattern of axis deformation of the bar can avoid stress concentration and its ill effects.

The invention provides a deformed reinforcing bar, a truss structure and a floor module structure. The deformed reinforcing bar comprises an accommodating recess so that when used with a strut member to construct the truss structure of the invention as a top or bottom chord, the bending regions of the strut member can be fitted into the accommodating recess of the deformed reinforcing bar to simplify the welding process to achieve consistent welding quality as well as enhance the strength of the truss structure after pouring concrete. Additional transverse ribs and concave marks can be added to the surface of the deformed reinforcing bar and the surface of the accommodating recess to enhance bonding capability with concrete. The floor module structure can be assembled with a plurality of truss structure.

The invention provides a deformed reinforcing bar, a truss structure and a floor module structure. The deformed reinforcing bar comprises an accommodating recess so that when used with a strut member to construct the truss structure of the invention as a top or bottom chord, the bending regions of the strut member can be fitted into the accommodating recess of the deformed reinforcing bar to simplify the welding process to achieve consistent welding quality as well as enhance the strength of the truss structure after pouring concrete. Additional transverse ribs and concave marks can be added to the surface of the deformed reinforcing bar and the surface of the accommodating recess to enhance bonding capability with concrete. The floor module structure can be assembled with a plurality of truss structure.

The disclosed system divides the precast and cast-in-place construction into vertical and horizontal components. The vertical components are precast, permitting rapid vertical building construction without a delay for concrete to set. The three primary precast components are a column, a horizontal slab, and a central panel placed diagonally between the slabs. By separating the columns from the horizontal slabs, the molds required to precast are simplified and transportation of the precast elements is streamlined. The resulting precast components are also of a weight and size that is readily manageable using a standard construction crane. The horizontal components are a combination of cast-in-place, and precast components. The result creates a continuous unitary floor structure that carries larger loads with less thickness that purely simple span pre-cast construction.

A corrosion resistant concrete reinforcing member includes (i) an elongate core member defining a longitudinal axis; (ii) a longitudinally extending outer wall connected to and extending around the elongate core; and (iii) a void between the elongate core and the outer wall that is in fluid communication with the outside of the reinforcement member; wherein the surface area defined by the portions of the elongate core and the outer wall that define the void is adapted to contact concrete and assist in mechanical bonding of the reinforcing member to the concrete.

A reinforcement steel bar includes a shaft part extending in a front-back direction, and a head part formed by forging an end portion of the shaft part. A width in a right-left direction of an upper end portion of the head part is formed wider than a diameter of the shaft part. The width in the right-left direction of a lower end portion of the head part is formed narrower than the diameter of the shaft part. An upper end surface extending parallel to an axial direction of the shaft part is formed at the upper end portion of the head part. A left side surface and a right side surface of the head part are inclined such that the width in the right-left direction of the head part is gradually reduced from the upper end portion to the lower end portion of the head part.

A reinforcement steel bar includes a shaft part and a head part formed by forging an end portion of the shaft part. A front end surface with its normal direction aligned with an axial direction of the shaft part is formed at a front end portion of the head part. A base end portion of the head part projects from the shaft part in a radial direction of the shaft part. A plate-shaped flange portion is formed at an outer peripheral part of the base end portion of the head part.

A high manganese content deformed reinforcing bar having an austenite single phase microstructure has excellent bending workability. A deformed reinforcing bar includes a chemical composition containing, in mass %, C: 0.7% or more and 1.2% or less, Si: 1.0% or less, Mn: 9% or more and 15% or less, Cr: 1.0% or less, P: 0.03% or less, and S: 0.05% or less, the balance consisting of Fe and inevitable impurities; and a microstructure comprising an austenite single phase. The ratio of the difference between the maximum and minimum hardness at a periphery of a cross-section perpendicular to the longitudinal direction with respect to a central average hardness is 15% or less. Two or more ribs extend in the longitudinal direction at equal intervals in a cross-sectional circumferential direction. The ratio of the difference between the maximum and minimum width of the ribs to the minimum width is 50% or less.

Methods and constructs for inserting an intron into a reporter protein coding sequence in a eukaryotic cell and their application of monitoring and reporting genomic modifications are provided. Various related compositions, cells and kits are also provided.