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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 22459.4-2022: Refractory mortars - Part 4: Determination of flexural bonding strength Status: Valid GB/T 22459.4: Historical versions
Basic dataStandard ID: GB/T 22459.4-2022 (GB/T22459.4-2022)Description (Translated English): Refractory mortars - Part 4: Determination of flexural bonding strength Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Q46 Word Count Estimation: 14,172 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 22459.4-2022: Refractory mortars - Part 4: Determination of flexural bonding strength---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Refractory mortars - Part 4.Determination of flexural bonding strength ICS 81.080 CCSQ46 National Standards of People's Republic of China Replacing GB/T 22459.4-2008 refractory mud Part 4.Test method for flexural bond strength at room temperature (ISO 13765-4.2004, MOD) Published on 2022-03-09 2022-10-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration forewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" drafted. This document is part 4 of GB/T 22459 "Refractory Slurry". GB/T 22459 has released the following parts. --- Part 1.Consistency test method (cone penetration method); --- Part 2.Consistency test method (jumping table method); --- Part 3.Test method for bonding time; --- Part 4.Test method for flexural bond strength at room temperature; --- Part 5.Test method for particle size distribution (sieve analysis); --- Part 6.Test method for water content of pre-mixed mud; --- Part 7.Other performance test methods; --- Part 8.Bleeding test method. This document replaces GB/T 22459.4-2008 "Refractory Mud Part 4.Test Method for Flexural Bonding Strength at Room Temperature". and Compared with GB/T 22459.4-2008, in addition to structural adjustment and editorial changes, the main technical changes are as follows. a) Modified normative references (see Chapter 2, Chapter 2 of the.2008 edition); b) Changed the requirements for equipment (see 5.1~5.6, 5.1~5.6 of the.2008 edition); c) Changed Figure 1 and added Figure 2 (see Figure 1, Figure 2, Figure 1 of the.2008 edition); d) The requirements for specimen size, knife edge spacing and loading rate have been changed (see Table 1, Table 1 of the.2008 edition); e) The provisions on sampling have been changed (see 6.1, 6.1 of the.2008 edition); f) Added the provisions on the size deviation of the bonding surface of the refractory brick test block and the source of the refractory brick (see 6.2.2, 6.2.3); g) Changed the provisions on drying time of refractory bricks (see 6.2.4, 6.2 of the.2008 edition); h) The requirements for environmental conditions and sample handling are added to the preparation of test pieces (see 7.1.1); i) Added the requirement for sealing and then stirring (see 7.1.3); j) Added tolerance requirements for brick joints (see 7.1.4); k) Changed the position deviation of the loading blade (see 7.4.2, 7.4.2 of the.2008 edition); l) Modified the provisions on drying time (see 7.2.2, 7.2 of the.2008 edition); m) The requirements for the cooling rate after the sample is fired are added (see 7.3.4); n) Changed the provisions for checking the fracture surface (see 7.4.3, 7.4.3 of the.2008 edition); o) Changed the provisions for the rounding of test results (see Chapter 8, Chapter 8 of the.2008 edition); p) Changed the test report requirements (see Chapter 9, Chapter 9 of the.2008 edition). This document is revised and adopted ISO 13765-4.2004 "Refractory Mud Part 4.Test Method for Flexural Bond Strength at Room Temperature". Compared with ISO 13765-4.2004, this document has many adjustments in structure, and the comparison list of structure number changes between the two documents See Appendix A for the table. Compared with ISO 13765-4.2004, this document has many technical differences. In the outer margins of the clauses involved, vertical A straight single line (|) is marked. See Appendix B for a list of these technical differences and their reasons. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed and managed by the National Standardization Technical Committee of Refractories (SAC/TC193). This document is drafted by. MCC Wuhan Metallurgical Construction Research Institute Co., Ltd., Sinosteel Luoyang Refractory Research Institute Co., Ltd., Wuhan University of Science and Technology, China Metallurgical Coking (Dalian) Engineering Technology Co., Ltd., China Metallurgical Testing and Certification Co., Ltd., Shanghai New Taishan High Temperature Engineering Materials Ltd. The main drafters of this document. Wu Shujun, Cheng Shuiming, Peng Xigao, Zhang Qi, Yin Yucheng, Zhang Xiuhua, Wang Xiaoli, Peng Yan, Li Hongbo, Liu Zhiyun, Xia Changyong, Zhu Qingyou, Ao Ping, Deng Luopeng, Sun Lijun, Ma Sikai. The previous versions of this document and its superseded documents are as follows. This document was first published in.2008 and this is the first revision.IntroductionRefractory mud is generally used as the joint material of refractory masonry, so that the masonry forms a tight whole to resist the damage of external force and prevent gas, Intrusion of molten liquid. Masonry joints are usually the weak link of the masonry, and in most cases are damaged before the masonry, so the quality of the refractory mortar is It is closely related to the overall life of the masonry. The normal temperature flexural bonding strength of refractory mud directly determines the quality of the product and the effect of construction and masonry, and will eventually affect the refractory masonry. The service life and safety of the body are affected. The first 6 parts of GB/T 22459 are modified to adopt ISO 13765, GB/T 22459 Parts 7 and 8 have no correspondence with ISO 13765. GB/T 22459 "Refractory Mud" consists of 8 parts. --- Part 1.Consistency test method (cone penetration method), the purpose is to determine the consistency of refractory mud; --- Part 2.Consistency test method (jumping table method), the purpose is to determine the consistency of refractory mud; --- Part 3.Test method for bonding time, the purpose is to determine the time required for the stability of the bonding of refractory mortar joints when building refractory masonry take time; --- Part 4.Test method for flexural bonding strength at room temperature, the purpose is to determine the resistance of refractory mortar joints after refractory masonry is built. folded bond strength; --- Part 5.Test method for particle size distribution (sieve analysis), the purpose of which is to determine the particle size distribution of refractory mud; --- Part 6.Test method for water content of pre-mixed mud, the purpose of which is to determine the moisture content of pre-mixed mud; --- Part 7.Other performance test methods, the purpose is to determine the refractoriness of refractory mud, high temperature flexural bonding strength, room temperature flexural strength degree, thermal expansion, thermal conductivity, etc.; --- Part 8.Bleeding test method, the purpose is to determine the bleeding performance of refractory mud at rest or under a certain load. This document is part 4, and the other 7 parts belong to the test method for refractory mud, which together constitute the test method for refractory mud system. refractory mud Part 4.Test method for flexural bond strength at room temperature1 ScopeThis document specifies the principle, equipment, sampling and test block preparation, test procedures, Result calculation and test report. This document is applicable to the determination of the flexural bonding strength of the bonding surface after the refractory mortar is bonded to the refractory brick (after drying and/or firing).2 Normative referencesThe contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 4513.2 Unshaped Refractories Part 2.Sampling (GB/T 4513.2-2017, ISO 1927-2.2012, IDT) GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values GB/T 18930 Refractory Terms (GB/T 18930-2020, ISO 836.2001, MOD) GB/T 22459.1 Refractory Mud Part 1.Consistency Test Method (Cone Penetration Method) (GB/T 22459.1-2022, ISO 13765-1.2004, MOD) GB/T 22459.2 Refractory Mud Part 2.Consistency Test Method (Jumping Table Method) (GB/T 22459.2-2022, ISO 13765-2.2004, MOD)3 Terms and DefinitionsTerms and definitions defined in GB/T 18930 apply to this document.4 PrinciplesUse the tested refractory mortar to bond two refractory brick test blocks into a test piece of specified size, after drying and/or firing, at room temperature, press The specified loading rate applies bending stress to the bonding surface of the test piece until the bonding surface breaks.5 Instruments and equipment5.1 Loading device. The loading device is composed of three parallel knife edges (see Figure 1), one loading knife edge and two supporting knife edges, respectively. The knife edge is in the middle of the two supporting knife edges, the deviation is within 1mm, and it is perpendicular to the length direction of the sample. The length of the knife edge should be at least 5mm larger. The two support knife edges are located on the middle support block, and the bottom surface of the middle support block is part of the cylindrical surface. Each support blade can be independently adjusted for deflection (see Figure 2). It is also possible to fix one support blade, make the other support blade and load the blade Adjustable on the vertical plane. The values of the distance LS and the radius of curvature of the blade edge R, the parallelism between the transverse end surfaces of the specimen and the flatness between the upper and lower surfaces of the specimen are supported. The allowable error of line degree is shown in Table 1.The loading device shall be able to apply the load uniformly at a certain loading rate in the middle of the specimen, and shall be able to record or ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 22459.4-2022_English be delivered?Answer: Upon your order, we will start to translate GB/T 22459.4-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 22459.4-2022_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 22459.4-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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