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GB 50728-2011

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标准详细信息 GB 50728-2011; GB50728-2011
中文名称: 工程结构加固材料安全性鉴定技术规范(附条文说明)
英文名称: Technical code for safety appraisal of engineering structural strengthening materials
行业: 国家标准
中标分类: P20
国际标准分类: 91.080.01
字数估计: 170,000
发布日期: 2011-12-05
实施日期: 2012-05-01
引用标准: 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;
起草单位: 四川省建筑科学研究院
归口单位: 四川省建筑科学研究院
标准依据: 住房和城乡建设部公告第1213号
范围: 为加强对工程结构加固中应用的有关材料及制品的质量控制和技术管理, 确保工程结构加固工程的质量和安全, 制定本规范。本规范适用于结构加固工程中应用的材料及制品的安全性检验与鉴定。


GB 50728-2011
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
Technical code for safety appraisal of
engineering structural strengthening materials
工程结构加固材料安全性鉴定技术规范
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 
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 
8.4 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 
11.2 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
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 
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
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 
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
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
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
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
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...
   
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