標(biāo)準(zhǔn)編號(hào):	GB/T 28990-2012
中文名稱(chēng):	古建筑木構(gòu)件內(nèi)部腐朽與彈性模量應(yīng)力波無(wú)損檢測(cè)規(guī)程
英文名稱(chēng):	Code for non-destructive evaluation of interior decay and modulus of elasticity of historic building wood members by stress wave methods
中標(biāo)分類(lèi):	B69    木材加工材
行業(yè)分類(lèi):	GB    國(guó)家標(biāo)準(zhǔn)
發(fā)布機(jī)構(gòu):	中華人民共和國(guó)國(guó)家質(zhì)量監(jiān)督檢驗(yàn)檢疫總局 中國(guó)國(guó)家標(biāo)準(zhǔn)化管理委員會(huì)
發(fā)布日期:	2012-12-31
實(shí)施日期:	2013-6-1
標(biāo)準(zhǔn)狀態(tài):	valid
翻譯語(yǔ)言:	英文
文件格式:	PDF
中文字符數(shù):	14000 字
翻譯價(jià)格(元):	840.0
交付時(shí)間:	付款后 1 個(gè)工作日

Test methods of steel for reinforcement of concrete 1 Scope This standard specifies the test methods of steel for reinforced concrete, covering tensile test, bending test, rebending test, axial fatigue test, chemical analysis, geometric dimension measurement, determination of specific projected rib area, determination of mass deviation and metallographic examination of steel bar. This standard is applicable to steel bar products for reinforced concrete. This standard is not applicable to prestressed steel. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documents (including any amendments) applies. GB/T 228.1-2010 Metallic materials - Tensile testing - Part 1: Method of test at room temperature (ISO 6892-1:2009, MOD) GB/T 232-2010 Metallic materials - Bend test (ISO 7438:2005, MOD) GB/T 4336 Standard test method for spark discharge atomic emission spectrometric analysis of carbon and low-alloy steel (routine method) GB/T 12160 Calibration of extensometers used in uniaxial testing (GB/T 12160-2002, ISO 9513:1999, IDT) GB/T 13298 Inspection methods of microstructure for metals GB/T 16825.1 Verification of static uniaxial testing machines - Part 1: Tension/ compression testing machines - Verification and calibration of the force measuring system (GB/T 16825.1-2008, ISO 7500-1:2004, IDT) 3 Symbols The symbols used in this standard are shown in Table 1.

Foreword i 1 Scope 2 Normative references 3 Symbols 4 General provisions concerning specimens 4.1 Preparation 4.2 Straightening 4.3 Artificial aging 5 Tensile test 5.1 Specimen 5.2 Apparatus 5.3 Test procedure 6 Bend test 6.1 Specimen 6.2 Test apparatus 6.3 Test procedure 6.4 Judgment of test results 7 Rebend test 7.1 Specimen 7.2 Test apparatus 7.3 Test procedure 7.4 Judgment of test results 8 Axial force fatigue test 8.1 Principle of test 8.2 Specimen 8.3 Test apparatus 8.4 Test procedure 9 Chemical analysis 10 Measurement of the geometrical characteristics 10.1 Specimen 10.2 Test apparatus 10.3 Test procedure 11 Determination of the specific projected rib area (fR) 11.1 Introduction 11.2 Measurements 11.3 Calculation of fR 12 Determination of mass deviation 12.1 Specimen 12.2 Accuracy of measurement 12.3 Test procedure 13 Metallographic examination of steel bar 13.1 Specimen 13.2 Test procedure Annex A (Informative) Technical differences between this standard and ISO 15630-1: 2010 and their causes