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GB 50728-2011 English PDF

GB 50728-2011_English: PDF (GB50728-2011)
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BASIC DATA
Standard ID GB 50728-2011 (GB50728-2011)
Description (Translated English) Technical code for safety appraisal of engineering structural strengthening materials
Sector / Industry National Standard
Classification of Chinese Standard P20
Classification of International Standard 91.080.01
Word Count Estimation 170,177
Date of Issue 2011-12-05
Date of Implementation 2012-05-01
Quoted Standard GB 50010; GB 50017; GB 50119; GB/T 50329; GB 50367; GB/T 50448; GB 50550; GB 50702; GB/T 1634.2; GB/T 2568; GB/T 2569; GB/T 2570; GB/T 3098; GB/T 3354; GB/T 3356; GB/T 3366; GB/T 4883; GB/T 6329; GB/T 7123.1; GB/T 7124; GB 8076; GB/T 9914.3; GB/T 11791; GB/T 13354; GB/T 13477.6; GB/T 15393; GJB 94; GJB 444; GJB 3383; DL/T 5150; JG 160; YB/T 2206.2; JG 237
Drafting Organization Sichuan Provincial Academy of Building Research
Administrative Organization Sichuan Building Scientific Academy
Regulation (derived from) Ministry of Housing and Urban Notice No. 1213
Summary This Chinese standard relates to strengthen the application of engineering structural reinforcement materials and products relating to quality control and technology management, engineering structural reinforcement works to ensure quality and safety, the development of this standard. This standard applies to the application of structural reinforcement materials and products safety inspection and identification.


GB 50728-2011 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA UDC Technical code for safety appraisal of engineering structural strengthening materials ISSUED ON. DECEMBER 5, 2011 IMPLEMENTED ON. MAY 1, 2012 Jointly issued by. Ministry of Housing and Urban-Rural Development of the People’s Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China. Foreword This Code is prepared by Sichuan Institute of Building Research and China Huashi Enterprises Co., Ltd in collaboration with the relevant organizations, in accordance with the requirements of Construction Standard [2001] No. 87 issued by the former Ministry of Construction - Notice on Printing and Distributing the “Development and Revision Plan of National Engineering Construction Standards from 2000 to 2001”. In the course of compilation of this Code, the compilation group carried out special studies on the methods for safety appraisal of various engineering structural strengthening materials and products, performed extensive investigation and analysis as well as verification tests and test trials on key projects, summarized the experience in performance design, quality control and engineering application of China’s strengthening materials and products over the past 20 years, and made comparative analysis and reference to foreign advanced standards and norms. On this basis, the opinions of the relevant organizations and the general public were widely solicited in various ways and tested, and the test results were evaluated. Accordingly, the main provisions have also been repeatedly revised and finalized after review. This Code comprises 12 chapters and 19 annexes, with the main technical contents as follows. general provisions, terms, basic requirements, structural adhesives, injection grouting for cracks, cement-based grouting for structural strengthening, polymer modified cement mortar for structural strengthening, fibre reinforced polymer, steel wire ropes, synthetics modified concrete and mortar, steel fibre concrete, and post-installed fastenings. The provision(s) of this Code printed in bold type is (are) mandatory one(s) and must be enforced strictly. The Ministry of Housing and Urban-Rural Development of the People’s Republic of China is responsible for the administration of this Code and the interpretation of mandatory provisions. The Sichuan Provincial Department of Housing and Urban-Rural Development is responsible for the daily administration of this Code. The Sichuan Institute of Building Research is responsible for the interpretation of specific technical contents. In order to fully improve the quality of codes, all relevant organizations are kindly requested to sum up and accumulate experience and data in actual engineering practices during the process of implementing this Code. The relevant opinions and advice, whenever necessary, can be posted or passed on to the Administration Committee of Codes for Building Appraisal and Reinforcement of the Ministry of Housing and Urban-Rural Development at No. 55, Third North Section of the Table of Contents Foreword ... 4  1 General provisions ... 10  2 Terms ... 11  3 Basic requirements ... 15  4 Structural adhesives ... 18  4.1 General requirements ... 18  4.2 Structural adhesive for concrete substrates ... 19  4.3 Structural adhesive for masonry substrates ... 28  4.4 Structural adhesive for steel substrates ... 29  4.5 Structural adhesive for timber substrates ... 33  4.6 Pressure injection adhesive for cracks ... 34  4.7 Interfacial adhesive, primer and putty for structural strengthening ... 35  4.8 Technical property requirements for engineering safety of structural adhesives ... 37  5 Injection grouting for cracks ... 40  5.1 General requirements ... 40  5.2 Safety appraisal of injection grouting for cracks ... 40  6 Cement-based grouting material for structural strengthening ... 44  6.1 General requirements ... 44  6.2 Safety appraisal of cement-based grouting material ... 44  7 Polymer modified cement mortar for structural strengthening ... 47  7.1 General requirements ... 47  7.2 Safety appraisal of polymer modified cement mortar ... 48  8 Fibre reinforced polymer ... 50  8.1 General requirements ... 50  8.2 Carbon fibre reinforced polymer ... 50  8.3 Aramid fibre reinforced polymer ... 52  8.4 Glass fibre reinforced polymer ... 53  9 Steel wire ropes ... 54  9.1 General requirements ... 54  9.2 Steel wire for rope making ... 54  9.3 Safety appraisal of steel wire ropes ... 55  10 Synthetics modified concrete and mortar ... 56  10.1 General requirements ... 56  10.2 Safety appraisal of synthetics modified concrete and mortar ... 56  11 Steel fibre reinforced concrete ... 59  11.1 General requirements ... 59  11.2 Safety appraisal of steel fibre reinforced concrete ... 59  12 Post-installed fastenings ... 61  12.1 General requirements ... 61  12.2 Material appraisal of substrates and anchors ... 61  12.3 Safety appraisal of connection by post-installed fastenings ... 62  Annex A Suitable test method standards for safety appraisal ... 64  Annex B Calculation method for characteristic value of material properties .. 67  Annex C Quick determination of wedge for bond durability ... 68  Annex D Determination method for interlaminar shear strength of fibre reinforced polymer ... 74  Annex E Determination method for splitting tensile strength of filler-rich adhesive colloid and polymer modified cement mortar ... 80  Annex F Determination method and evaluation criteria for T impact peeling length of structural adhesive ... 84  Annex G Laboratory determination method and evaluation criteria for tensile bond strength of adhesive material agglutinate strengthening material and substrate ... 89  Annex H Determination method of non-volatile matter content in structural adhesive ... 97  Annex J Determination method for damp heat ageing of structural adhesive and polymer modified cement mortar [Translator Note. Annex I is not existed] ... 100  Annex K Determination method for bond strength of adhesive agglutinate steel bar and concrete substrate in pull-out constraint condition ... 104  Annex L Determination method for heat ageing resistance of structural adhesive ... 109  Annex M Determination method for fatigue stress resistance ability of specimens connected with adhesive ... 113  Annex N Determination method and evaluation criteria for compressive shear strength of concrete-to-concrete bonding ... 116  Annex P Determination method for shrinkage of adhesive casting (colloid). 122  Annex Q Determination method for initial viscosity of structural adhesive ... 125  Annex R Determination method for thixotropic index of structural adhesive 129  Annex S Determination method for flexural strength of polymer modified cement mortar and grouting material ... 132  Annex T Determination method for flexural toughness of synthetics modified concrete ... 136  Annex U Test method of anchorage capacity ... 139  Explanation of wording in this Code ... 142  List of quoted standards ... 143  1 General provisions 1.0.1 This Code is formulated with a view of strengthening the quality control and technical management of relevant materials and products used in the engineering structural strengthening to ensure the quality and safety of the engineering structural strengthening projects. 1.0.2 This Code is applicable to the safety inspection and appraisal of materials and products used in structure strengthening engineering. 1.0.3 The conclusions on the safety appraisal of application of engineering structural strengthening materials and products shall be taken as the basis for the selection of materials for engineering strengthening, and shall not be used for replacing the sampling of strengthening materials and products at the construction site for re-inspection. 1.0.4 The safety appraisal of application of engineering structural strengthening materials and products shall be accepted by the inspection and appraisal institutions with corresponding qualifications approved by the competent authorities of the nation. 1.0.5 This Code shall be used in conjunction with the following current national standards, namely GB 50367 Code for design of strengthening concrete structure, GB 50702 Code for design of strengthening masonry structures, GB 50550 Code for acceptance of constructional quality of strengthening building structures, etc. 1.0.6 Not only the requirements stipulated in this Code, but also those in the current relevant standards of the nation shall be complied with, during the safety inspection and appraisal of application of engineering structural strengthening materials and products. 2 Terms 2.0.1 Appraisal A set of work activities carried out for demonstrating the reliability (including the safety, suitability and durability) of a strengthening material or product in involvement of load-bearing members of engineering structure under stress. 2.0.2 Verification test A test to prove whether the properties of a strengthening material or product meet the specified requirements. 2.0.3 Sampling The process of randomly selecting or composing samples according to certain rules. 2.0.4 Sample One or more individuals taken from the population in the prescribed manner, for providing information about the population as a basis for the determination of a particular feature of the population. 2.0.5 Characteristic value of a material property Basic representative value of material properties. This value shall be determined based on a certain quantile of the probability distribution of material properties that meet the... ......