77.140.15 混凝土增强用钢 标准查询与下载

ASTM A1061/A1061M-16 多钢丝预应力钢绞线试验的标准试验方法

4.1 The breaking strength and elongation of the strand are determined by one or more tensile tests in which fracture of the specimen ideally occurs in the free span. 4.2 Mechanical properties of the strand will be negatively affected if proper care is not taken to prevent damage such as severe bending, abrasion, or nicking of the strand during sampling. 4.3 Premature failure of the test specimens may result if there is appreciable notching, cutting, or bending of the specimen by the gripping devices of the testing machine. 4.4 Errors in testing will result if the wires constituting the strand are not loaded uniformly. 4.5 The mechanical properties of the strand will be materially affected by excessive heating during test specimen collection or preparation. 1.1 These test methods describe procedures for testing the mechanical properties of multi-wire steel prestressing strand. 1.2 These test methods are intended for use in evaluating specific strand properties prescribed in specifications for multi-wire steel prestressing strand, but they do not quantify acceptance criteria specified in the applicable specification for the strand being tested. 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Methods for Testing Multi-Wire Steel Prestressing Strand

ASTM A775/A775M-16 环氧涂层钢筋的标准规格

1.1 This specification covers deformed and plain steel reinforcing bars with protective epoxy coating applied by the electrostatic spray method. Note 1: The coating applicator is identified throughout this specification as the manufacturer. 1.2 Other organic coatings may be used provided they meet the requirements of this specification. 1.3 Requirements for coatings are contained in Annex A1. 1.4 Requirements for patching material are contained in Annex A2. 1.5 Guidelines for construction practices at the job-site are presented in Appendix X1. 1.6 This specification is applicable for orders in either SI units (as Specification A775M) or inch-pound units [as Specification A775]. 1.7 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Epoxy-Coated Steel Reinforcing Bars

ASTM A910/A910M-16 预应力混凝土用未涂覆, 未焊接的2股和3股钢绞线的标准规格

1.1 This specification covers two types and two grades of 2-wire and 3-wire, uncoated steel strand for use in prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-relaxation). Low-relaxation is to be regarded as the standard type. Stress-relieved (normal-relaxation) strand will not be furnished unless specifically ordered. The two grades are 250 [1725] and 270 [1860]. Grades 250 [1725] and 270 [1860] have minimum tensile strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa] respectively, based on the nominal area of the strand. 1.2 This specification is applicable for orders in either inch-pound units (as Specification A910) or in SI units (as Specification A910M). 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification.

Standard Specification for Uncoated, Weldless, 2-Wire and 3-Wire Steel Strand for Prestressed Concrete

GOST 34028-2016 钢筋混凝土结构用加强轧材. 规格

Reinforcing rolled products for reinforced concrete constructions. Specifications

ASTM A886/A886M-16 用于预应力混凝土的锯齿形七线应力解除钢绞线的标准规格

1.1 This specification covers two types and two grades of indented seven-wire uncoated, steel strand for use in prestressed concrete construction. The two types of strand are low-relaxation and stress-relieved (normal-relaxation). Grade 250I [1725I] and Grade 270I [1860I] have minimum tensile strengths of 250 ksi [1725 MPa] and 270 ksi [1860 MPa], respectively, based on the nominal area of the strand. 1.2 This specification is applicable for orders in either inch-pound units (as Specification A886) or in SI units (as Specification A886M). 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification.

Standard Specification for Steel Strand, Indented, Seven-Wire Stress-Relieved for Prestressed Concrete

ASTM A820/A820M-16 纤维增强型混凝土用钢纤维的标准规格

1.1 This specification covers minimum requirements for steel fibers intended for use in fiber-reinforced concrete. Five types of steel fibers for this purpose are defined as pieces of smooth or deformed cold-drawn wire; smooth or deformed cut sheet; melt-extracted fibers; mill-cut or modified cold-drawn wire steel fibers that are sufficiently small to be dispersed at random in a concrete mixture. 1.2 This specification provides for measurement of dimensions, tolerances from specified dimensions, and required minimum physical properties, and prescribes testing procedures to establish conformance to these requirements. 1.3 In the case of conflict between a requirement of a product specification and a requirement of this specification, the product specification shall prevail. In the case of a conflict between a requirement of the product specification or a requirement of this specification and a more stringent requirement of the purchase order, the purchase order shall prevail. The purchase order requirements shall not take precedence if they, in any way, violate the requirements of the product specification or this specification; for example, by the waiving of a test requirement or by making a test requirement less stringent. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

Standard Specification for Steel Fibers for Fiber-Reinforced Concrete

ASTM A970/A970M-16 混凝土钢筋用有膨胀头的钢棒的标准规格

1.1 This specification covers deformed steel reinforcing bars in cut lengths, with a head attached to one or both ends, for concrete reinforcement. Heads are forge-formed, machined from bar stock, or cut from plate. Attachment can be accomplished through: 1.1.1 Welding; 1.1.2 Integrally hot forging of a head from the reinforcing bar end; 1.1.3 Internal threads in the head mating to threads on the bar end; 1.1.4 Cold-swaging an externally threaded coupling sleeve onto the reinforcing bar; 1.1.5 Cold-extruding an external coupling sleeve onto the reinforcing bar; 1.1.6 Cold-swaging an external coupling sleeve or headed sleeve onto the reinforcing bar; 1.1.7 Attaching a coupling sleeve to the end of the reinforcing bar by means of the means of a ferrous-filler medium; or 1.1.8 Separate threaded nut to secure the head to the bar. Note 1: The requirements of this specification are only applicable to headed bars where the attachment of the head is accomplished by one of the methods listed in 1.1. 1.2 Limitations on head dimensions and on obstructions and interruptions of bar deformations on the non-planar features on the bearing face of the head are presented in Annex A1. The requirements in Annex A1 only apply when specified by the purchaser (see 4.2.3). 1.3 This specification is applicable for orders in either inch-pound units as Specification A970 or SI units as Specification A970M. 1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification. 1.5 This specification does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Headed Steel Bars for Concrete Reinforcement

GSO ISO 15698-2:2015 混凝土钢筋 带头钢筋 第2部分：试验方法

  Scope is not provided for this standard

Steel for the reinforcement of concrete -- Headed bars -- Part 2: Test methods

GSO ISO 15698-1:2015 混凝土钢筋 带头钢筋 第1部分：要求

  Scope is not provided for this standard

Steel for the reinforcement of concrete -- Headed bars -- Part 1: Requirements

GSO ISO 10144:2015 混凝土结构加固用钢筋和线材认证计划

This International Standard specifies rules for a certification scheme for continuous production of steel bars and wires for ordinary reinforcement of concrete structures in order to verify the conformity with requirements specified in product standards such as ISO 6935-1 and ISO 6935-2. A certification scheme for continuous production consists of the following stages: — suitability testing (see clause 4); — internal inspection by the producer (see clause 5); — inspection and supervision by an external body (see clause 6).

Certification scheme for steel bars and wires for the reinforcement of concrete structures

BS 8597:2015 钢筋混凝土用钢. 钢筋耦合器. 要求和试验方法

Steels for the reinforcement of concrete. Reinforcement couplers. Requirements and test methods

ASTM A970/A970M-15e1 钢筋混凝土钢筋标准规范

Standard Specification for Headed Steel Bars for Concrete Reinforcement

ASTM A615/A615M-15 混凝土钢筋用变形和普通碳素钢筋的标准规格

1.1 This specification covers deformed and plain carbon-steel bars in cut lengths and coils for concrete reinforcement. Steel bars containing alloy additions, such as with the Association for Iron and Steel Technology and the Society of Automotive Engineers series of alloy steels, are permitted if the resulting product meets all the other requirements of this specification. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1. (A) The nominal dimensions of a deformed bar are equivalent to those of a plain round bar having the same weight [mass] per foot [metre] as the deformed bar.(B) Refer to Note 2. 1.2 Bars are of five minimum yield strength levels: namely, 408201;000 psi [280 MPa], 608201;000 psi [420 MPa], 758201;000 psi [520 MPa], 808201;000 psi [550 MPa], and 100 000 psi [690 MPa], designated as Grade 40 [280], Grade 60 [420], Grade 75 [520], Grade 80 [550], and Grade 100 [690], respectively. Note 1: Grade 100 [690] reinforcing bars were introduced in this specification in 2015. In contrast to the lower grades, which have ratios of specified tensile strength to specified yield strength that range from 1.31 to 1.5, Grade 100 [690] reinforcing bars have a ratio of specified tensile strength to specified yield strength of 1.15. Designers should be aware that there will, therefore, be a lower margin of safety and reduced warning of failure following yielding when Grade 100 [690] bars are used in structural members where strength is governed by the tensile strength of the reinforcement, primarily in beams and slabs. If this is of concern, the purchaser has the option of specifying a minimum ratio of tensile strength to actual yield strength. Consensus design codes and specifications such as “Building Code Requirements for Structural Concrete (ACI 318)” may not recognize Grade 100 [690] reinforcing bars: therefore the 125 % of specified yield strength requirements in tension and compression are not applicable. Mechanical and welded splices should meet a minimum specified tensile strength of 115 000 psi [790 MPa]. Note 2: Designers need to be aware that design standards do not recognize the use of the No. 20 [64] bar, the largest bar included in this specification. Structural members reinforced with No. 20 [64] bars may require approval of the building official or other appropriate authority and require special detailing to ensure adequate performance at service and factored loads. 1.3 Plain bars, in sizes up to and including 21/2 in. [63.5 mm] in diameter in coils or cut lengths, when ordered shall be furnished under this specification in Grade 40 [280], Grade 60 [420], Grade 75 [520], Grade 80 [550], and Grade 100 [690]. For ductility properties (elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply. Requirements providing for deformations and marking......

Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

ASTM A722/A722M-15 预应力混凝土用高强度钢筋的标准规格

1.1 This specification covers Type I and Type II high-strength steel bars intended for use in prestressed concrete construction or in prestressed ground anchors. Type I bars have a plain surface. Type II bars have surface deformations. Bars are of a minimum tensile strength level of 150 000 psi [1035 MPa]. 1.2 A supplementary requirement (S1) is provided for use where bend tests of bars are required by the purchaser. The supplementary requirement applies only when specified in the purchase order. 1.3 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.4 This specification is applicable for orders in either inch-pound units (as Specification A722) or in SI units (as Specification A722M). 1.5 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification.

Standard Specification for High-Strength Steel Bars for Prestressed Concrete

ASTM A1094/A1094M-15a 混凝土结构加固用连续热浸镀锌钢棒材的标准规格

1.1 This specification covers steel reinforcing bars, with protective zinc or zinc-alloy coatings applied by the continuous hot-dip process. Note 1: The galvanizer is identified throughout this specification as the manufacturer. 1.2 Guidelines for construction practices at the job-site are presented in Appendix X1. 1.3 Guidelines for use of continuous hot-dip galvanized reinforcing bars with non-galvanized steel forms are presented in Appendix X2. 1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered requirements of the specification. 1.5 This specification is applicable for orders in either inch-pound units (as Specification A1094) or SI units (as Specification A1094M). 1.6 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents. Therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with this specification. 1.7 This specification does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this specification to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Continuous Hot-Dip Galvanized Steel Bars for Concrete Reinforcement

ASTM A1094/A1094M-15 混凝土结构加固用连续热浸镀锌钢棒材的标准规格

1.1 This specification covers steel reinforcing bars, with protective zinc or zinc-alloy coatings applied by the continuous hot-dip process. Note 1: The galvanizer is identified throughout this specification as the manufacturer. 1.2 Guidelines for construction practices at the job-site are presented in Appendix X1. 1.3 Guidelines for use of continuous hot-dip galvanized reinforcing bars with non-galvanized steel forms are presented in Appendix X2. 1.4 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered requirements of the specification. 1.5 This specification is applicable for orders in either inch-pound units (as Specification A1094) or SI units (as Specification A1094M). 1.6 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents. Therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with this specification. 1.7 This specification does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this specification to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Continuous Hot-Dip Galvanized Steel Bars for Concrete Reinforcement

ASTM A706/A706M-15 混凝土钢筋用变形和普通低合金钢棒的标准规格

1.1 General—This specification covers deformed and plain low-alloy steel bars in cut lengths and coils for concrete reinforcement intended for applications where restrictive mechanical properties and chemical composition are required for compatibility with controlled tensile property applications or to enhance weldability. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1. (A) The nominal dimensions of a deformed bar are equivalent to those of a plain round bar having the same weight [mass] per foot [metre] as the deformed bar. 1.2 Grade—Bars are of two minimum yield strength levels: namely, 608201;000 psi [420 MPa] and 808201;000 psi [550 MPa], designated as Grade 60 [420] and Grade 80 [550], respectively. 1.3 Plain bars, in sizes up to and including 21/2 in. [63.5 mm] in diameter in coils or cut lengths, when ordered, shall be furnished under this specification. For ductility properties (elongation and bending), test provisions of the nearest smaller nominal diameter deformed bar size shall apply. Requirements providing for deformations and marking shall not be applicable. 1.4 Controlled Tensile Properties—This specification limits tensile properties (Table 2) to provide the desired yield/tensile properties for controlled tensile property applications. (A) Tensile strength shall not be less than 1.25 times the actual yield strength. 1.5 Welding—This specification limits chemical composition (6.2) and carbon equivalent (6.4) to enhance the weldability of the material. When this steel is to be welded, a welding procedure suitable for the chemical composition and intended use or service should be used. The use of the latest edition of AWS8201;D1.4/D1.4M is recommended. The AWS D1.4/D1.4M Welding Code describes the proper selection of the filler metals, preheat/interpass temperatures, as well as, performance and procedure qualification requirements. 1.6 Requirements for alternate bar sizes are presented in Annex A1. The requirements in Annex A1 only apply when specified by the purchaser (see 4.2.4). 1.7 The text of this specification references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables, shall not be considered as requirements of this specification. 1.8 This specification is applicable f......

Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement

ASTM C876-15 混凝土中无涂层钢筋的腐蚀电位的标准试验方法

4.1 This test method is suitable for in-service evaluation and for use in research and development work. 4.2 This test method is applicable to members regardless of their size or the depth of concrete cover over the reinforcing steel. Concrete cover in excess of 3 in. (75 mm) can result in an averaging of adjacent reinforcement corrosion potentials that can result in a loss of the ability to discriminate variation in relative corrosion activity. 4.3 This test method may be used at any time during the life of a concrete member. 4.4 The results obtained by the use of this test method shall not be considered as a means for estimating the structural properties of the steel or of the reinforced concrete member. 4.5 The potential measurements should be interpreted by engineers or technical specialists experienced in the fields of concrete materials and corrosion testing. It is often necessary to use other data such as chloride contents, depth of carbonation, delamination survey findings, rate of corrosion results, and environmental exposure conditions, in addition to corrosion potential measurements, to formulate conclusions concerning corrosion activity of embedded steel and its probable effect on the service life of a structure. 1.1 This test method covers the estimation of the electrical corrosion potential of uncoated reinforcing steel in field and laboratory concrete, for the purpose of determining the corrosion activity of the reinforcing steel. 1.2 This test method is limited by electrical circuitry. Concrete surface in building interiors and desert environments lose sufficient moisture so that the concrete resistivity becomes so high that special testing techniques not covered in this test method may be required (see 5.1.4.1). Concrete surfaces that are coated or treated with sealers may not provide an acceptable electrical circuit. The basic configuration of the electrical circuit is shown in Fig. 1. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Corrosion Potentials of Uncoated Reinforcing Steel in Concrete

ASTM A421/A421M-15 用于预应力混凝土的应力消除钢丝的标准规格

1.1 This specification covers two types of stress-relieved round high-carbon steel wire commonly used in prestressed concrete construction, as follows: 1.1.1 Type BA wire is used for applications in which cold-end deformation is used for anchoring purposes (Button Anchorage), and 1.1.2 Type WA wire is used for application in which the ends are anchored by wedges, and no cold-end deformation of the wire is involved (Wedge Anchorage). 1.2 A supplementary requirement (S1) is provided for use where low-relaxation wire and relaxation testing for that product is required by the purchaser. The supplementary requirement applies only when specified in the purchase order. 1.3 This specification is applicable for orders in either inch-pounds units (as Specification A421) or in SI units (as Specification A421M). 1.4 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the specification.

Standard Specification for Stress-Relieved Steel Wire for Prestressed Concrete

ASTM A881/A881M-15 用于预应力混凝土铁路轨枕的低松弛缩进钢丝的标准规格

1.1 This specification covers uncoated, indented, low-relaxation steel wire for use as prestressing tendons in concrete railroad ties. 1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

Standard Specification for Steel Wire, Indented, Low-Relaxation for Prestressed Concrete Railroad Ties