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GB/T 36141-2018 English PDF

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US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 36141-2018: Methods for phase composition analysis of calcined gypsum
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 36141-2018	199	Add to Cart	3 days	Methods for phase composition analysis of calcined gypsum	Valid

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Basic data

Standard ID: GB/T 36141-2018 (GB/T36141-2018)
Description (Translated English): Methods for phase composition analysis of calcined gypsum
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q27
Classification of International Standard: 91.100.10
Word Count Estimation: 10,188
Date of Issue: 2018-05-14
Date of Implementation: 2019-04-01
Regulation (derived from): National Standards Announcement No. 6 of 2018
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 36141-2018: Methods for phase composition analysis of calcined gypsum

---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.
(Building gypsum phase composition analysis method) ICS 91.100.10 Q27 National Standards of People's Republic of China Analysis method of building gypsum phase composition Published on.2018-05-14 Implementation of.2019-04-01 State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the China Building Materials Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Lightweight and Decorative Building Materials (SAC/TC195). This standard is drafted by. Wuhan University of Technology, Xinjiang Building Materials Research Institute, Shanghai Institute of Building Research (Group) Limited the company. Participated in the drafting of this standard. Beixin Group Building Materials Co., Ltd., METTLER TOLEDO International Trading (Shanghai) Co., Ltd., Changzhou City Building Science Research Institute Co., Ltd., Taishan Gypsum Co., Ltd., Shanghai Daily Energy Saving and Environmental Protection Technology Co., Ltd., Sai Duo Lisi Scientific Instrument (Beijing) Co., Ltd., Meichao Group Co., Ltd., Guangzhou Liwan Top Instrument Co., Ltd., Qinghai Bochuan Mining Development Limited company. The main drafters of this standard. Yang Xinya, Sun Fan, Liu Tao, Ye Yihong, Qian Yaoli, Zhou Mengwen, Ji Wei, Yang Jiangjin, Zhang Jingyan, Ren Xulian, Li Tao, Chen Xiang, Li Yongxin, Wu Yongxiang, Yuan Xuchuan.

Introduction

The issuing organization of this document draws attention to the fact that when the statement conforms to this document, it may involve the relevant patent ZL201110033606.1 The use of rapid phase composition analysis methods for building gypsum. The issuing organization of this document has no position on the authenticity, validity and scope of the patent. The holder of the patent has assured the issuing authority of this document that he agrees that the user of this document may use the relevant technology of the patent free of charge. content. The patent holder's statement has been filed with the issuing authority of this document. Information can be obtained by contacting. Name of Patent Holder. Shanghai Academy of Building Research (Group) Co., Ltd. Address. No. 75 Wanping South Road, Xuhui District, Shanghai Note that in addition to the above patents, certain aspects of this document may still involve patents. The issuing organization of this document does not undertake to identify these patents. Responsibility. Analysis method of building gypsum phase composition

1 Scope

This standard specifies the oven method and moisture analyzer method for the analysis of the phase composition of building gypsum. This standard applies to soluble gypsum in building gypsum powder prepared by calcination of dihydrate gypsum (natural gypsum or industrial by-product gypsum). Analysis of three-phase content of (AIII), hemihydrate gypsum (HH), and dihydrate gypsum (DH).

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 Analytical laboratory water specifications and test methods

3 Principle

3.1 Soluble anhydrite in building gypsum (AIII) Soluble anhydrite (AIII) is hygroscopic, and its absorption of water in the air can be converted into hemihydrate gypsum (HH), so it is soluble. Water gypsum (AIII) and attached water are not present in the sample at the same time. Soluble anhydrite (AIII) can be hydrated in 95% aqueous ethanol solution Hemihydrate gypsum, under the same conditions, hemihydrate gypsum (HH) can not be hydrated into dihydrate gypsum (DH), so it can be determined by measuring soluble stone The content of the paste (AIII) hydrated in a 95% aqueous solution of ethanol was calculated. Its hydration reaction is as follows. CaSO4 0.5H2O=CaSO4·0.5H2O The content of soluble anhydrite (AIII) was calculated according to the chemical reaction formula. If there is no soluble anhydrite (AIII) in the sample, the quality of the sample before drying is greater than the mass after drying the constant weight, and the attached water can be calculated. Quality score. 3.2 Hemihydrate gypsum (HH) in building plaster Hemihydrate gypsum (HH) and soluble anhydrite (AIII) can be fully hydrated into dihydrate gypsum (DH) in pure water. The hydration increment in pure water, ie the total amount of hemihydrate gypsum (HH) and soluble anhydrite (AIII) to form dihydrate gypsum (DH), minus The content of soluble anhydrite (AIII) measured by 3.1 principle (when the anhydrous gypsum (AIII) phase is not included, the attached water should be baked. The mass loss) can be used to calculate the content of hemihydrate gypsum (HH). Its hydration reaction is as follows. CaSO4·0.5H2O 1.5H2O=CaSO4·2H2O CaSO4 2H2O=CaSO4·2H2O 3.3 Residual dihydrate gypsum (DH) in building gypsum Heating the building gypsum to.200 ° C or above, dihydrate gypsum (DH) dehydrated into soluble anhydrite (AIII), the total amount of dehydration is The sum of the dehydration amounts of dihydrate gypsum (DH) and hemihydrate gypsum (HH) and attached water, minus the amount of dehydration of hemihydrate gypsum (HH) and attached water, ie The residual dihydrate gypsum (DH) content can be calculated. The heating and dehydration reaction formula is as follows. CaSO4·2H2O= CaSO4 2H2O ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 36141-2018_English be delivered?

Answer: Upon your order, we will start to translate GB/T 36141-2018_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 36141-2018_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 36141-2018_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.