GB/T 17634-2019 English PDFUS$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 17634-2019: Geotextiles and geotextile-related products - Determination of the characteristic opening size - Wet sieving method Status: Valid GB/T 17634: Historical versions
Basic dataStandard ID: GB/T 17634-2019 (GB/T17634-2019)Description (Translated English): Geotextiles and geotextile-related products - Determination of the characteristic opening size - Wet sieving method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: W04 Classification of International Standard: 59.080.70 Word Count Estimation: 15,154 Date of Issue: 2019-12-31 Date of Implementation: 2020-07-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 17634-2019: Geotextiles and geotextile-related products - Determination of the characteristic opening size - Wet sieving method---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. Geotextiles and geotextile-related products-Determination of the characteristic opening size-Wet sieving method ICS 59.080.70 W04 National Standards of People's Republic of China Replaces GB/T 17634-1998 Geotextiles and related products Determination of effective pore size 2019-12-31 release 2020-07-01 implementation State Administration of Market Supervision Published by the National Standardization Administration ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 17634-1998 "Determination of effective pore size of geotextiles and related products" and Compared with GB/T 17634-1998, the main technical changes are as follows. --- Modify the scope of the standard "applicable to all types of geotextile products" to "applicable to all types of geotextiles and related products" (See Chapter 1, Chapter 1 of the.1998 edition). --- Updated normative references (see Chapter 2, Chapter 2 of the.1998 edition). --- Amend the "uniformity coefficient" to "unevenness coefficient" (see Chapter 3, Chapter 3 of the.1998 edition). --- In the principle, "under the prescribed vibration and amplitude" is amended to "without external pressure and under the prescribed vibration frequency and amplitude" (see section Chapter 4, Chapter 4 of the.1998 edition). --- The adjustment of the content and structure of the instrument has added 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6 project numbers; the original standard The d) note in 5.1 is adjusted to the standard text, and the "500mL/min" is modified to "0.5L/min" (see 5.1,.1998 version 5.1). --- "a) in the granular material has been deleted" d0≥0.010mm ", and added" if there is no obvious particle aggregation during the test, then The test results are valid. Otherwise, re-test "; delete the note of d) in 5.2" for the field soil, the test report should be "(See 5.2,.1998 edition 5.2). --- Added the content of "6.1 Pick and place requirements", the original clauses 6.1, 6.2, and 6.3 were successively postponed to 6.2, 6.3, and 6.4 (see Chapter 6,.1998 Chapter 6 of the Year Edition). --- Modify "Determination of the dry weight of the sample according to GB/T 9995" to "Measure and record the dry weight of the sample, accurate to 0.1g. Take 600s The weight of the sample is continuously weighed for the time interval. When the value of the sample is less than 0.1%, the sample is considered to have reached the dry weight state. Such as If the temperature has an impact on the sample, it should be dried at 70 ° C or below "(see 7.1, 7.1 of the.1998 edition). --- Modify "accurate to 0.1kg" to "accurate to 0.1g" (see 7.4,.1998 version 7.4). --- Added "Vibration height 3mm" content (see 7.7,.1998 version 7.7). --- Deleted the "listing of the initial amount of granular material, throughput, and non-passed volume 1 to calculate the percentage of granular material throughput and loss "Ratio"; "If the particle material throughput through one sample exceeds 25% of the average of the three samples" is modified to "if its The difference between the throughput of the particulate material in one sample and the average throughput of the three samples exceeds 25% of the average value "(see 7.14, 1998 version 7.14). --- "Mix the granular material passing through each sample to determine the particle size distribution. See Appendix A for sieving methods" to "Record particles Calculate the passing rate and loss rate of the granular material in Table 1 or Table 2 for the initial input amount, passing amount, and non-passing amount. Combination test The average passing rate of the sample granular material to determine the particle size distribution "; added the content of the note (see 7.15,.1998 version 7.15). --- In the test report h), if necessary, pass the particle size distribution curve of the sample and the percentage of each component of the granular material. Change to "see the example in Appendix B to draw a graph of the particle size distribution of the particulate material passing through the sample, and if necessary, record each part Percentage of graded particulate material "; item k) has been added (see Chapter 9, Chapter 9 of the.1998 edition). This standard uses the redrafting method to modify and adopt ISO 12956..2010 "Determination of Characteristic Aperture of Geotextiles and Related Products". this The technical differences between the standard and ISO 12956..2010 and their causes are as follows. --- Regarding the normative references, this standard has made adjustments with technical differences to suit China's technical conditions and the situation of adjustment. The situation is reflected in Chapter 2 "Regulatory Reference Documents", and the specific adjustments are as follows. ● Replaced ISO 565 with GB/T 6005 which adopted the international standard; ● Replaced ISO 9862 with GB/T 13760 equivalent to the international standard; ● Replaced ISO 10320 with GB/T 14798 equivalent to the international standard; ● ISO 2591-1 has been deleted; ● Added references to GB/T 6003.1 and GB/T 6003.2. --- 5.6 Balance, the accuracy was changed from 0.03g to 0.01g, making the result recording more accurate. --- The content related to this standard in ISO 2591-1 is incorporated in Appendix A, and the specific clauses refer to ISO 2591-1 as Appendix A. The following editorial changes have been made to this standard. --- In accordance with China's technical standard system, the standard name was changed to "Determination of effective pore size of geotextiles and related products law". --- According to the requirements of GB/T 1.1-2009, the chapter "Scope" was written in the specification. --- Added the note of 3.2 and added the explanation of the relationship between the symbol O90 and the characteristic aperture or effective aperture to facilitate the understanding of the standard content. --- In Chapter 4, the principle was added "and under the specified vibration frequency and amplitude" to make the expression more accurate. --- Adjusted the position of Figure 1 and Figure 2 in the standard text to make it easier to read the information of the figure and corresponding text. --- Added 5.1.1a) in the screening device, the vibration frequency in units of "times/min" is convenient to use. This standard is proposed by China Textile Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Textile Standardization (SAC/TC209). This standard was drafted. China Textile Standards Inspection and Certification Co., Ltd., Weifang Tuowang Industrial Co., Ltd., Fujian Changgeng New Materials Co., Ltd. Co., Ltd., Shandong Lude New Materials Co., Ltd., Shanghai Survey Design and Research Institute Co., Ltd., Zhejiang Jihang Engineering Materials Co., Ltd., Jin Jiangzhong Textile Standard Testing Co., Ltd. The main drafters of this standard. Gong Yingqiu, Liu Tao, Zhang Pengcheng, Zheng Haigang, Liao Changgeng, Liang Xunmei, Wang Xiao, Liu Feifei, Xu Yue, Huang Zhiping, Lu Shide, Jiang Jilian, Fang Yuan. The previous versions of the standards replaced by this standard are. --- GB/T 17634-1998. Geotextiles and related products Determination of effective pore size1 ScopeThis standard specifies a method for determining the characteristic pore size of geotextiles and related products using the principle of wet sieving. This standard applies to all types of geotextiles and related products.2 Normative referencesThe following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. Technical requirements and inspection of GB/T 6003.1 test sieve Part 1. Wire woven mesh test sieve (GB/T 6003.1-2012, (ISO 3310-1..2000, MOD) GB/T 6003.2 Test sieve technical requirements and inspections Part 2. Metal perforated plate test sieve (GB/T 6003.2-2012, (ISO 3310-2..1999, MOD) GB/T 6005 Basic dimensions of sieve openings for test woven wire mesh, perforated sheet and electroformed sheet (GB/T 6005- 2008, ISO 565..1990, MOD) GB/T 13760 Sampling and sample preparation for geosynthetics (GB/T 13760-2009, ISO 9862..2005, IDT) GB/T 14798 On-site identification of geosynthetics (GB/T 14798-2008, ISO 10320..1999, IDT)3 symbolsThe following symbols apply to this document. 3.1 dn The n% particles by mass are smaller than this value. 3.2 O90 The pore size of geotextiles and related products that allow particles with a particle size of d90 to pass through. The size of the perforation of the geotextile is equivalent to the maximum particle size when 90% of the soil particles pass through the geotextile. Note. O90 is usually called characteristic pore size or effective pore size, expressed in micrometers (μm). 3.3 Cu Uneven coefficient, defined as d60/d10.4 PrincipleA single-layer sample without tension is used as a screen.Without external pressure and at the specified vibration frequency and amplitude, the sample and the grading particles are sieved. The granular material (usually sand) is sprayed with water to pass the graded granular material through the sample. The specific particle size of the passing particulate material is used to indicate the Feature aperture. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 17634-2019_English be delivered?Answer: Upon your order, we will start to translate GB/T 17634-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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