GB/T 1596-2017 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 1596-2017 | English | 195 |
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Fly ash used for cement and concrete
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| GB/T 1596-2005 | English | 180 |
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Fly ash used for cement and concrete
| Obsolete |
| GB/T 1596-1991 | English | 319 |
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Fly ash used for cement and concrete
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GB/T 1596-2017: Fly ash used for cement and concrete---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT1596-2017
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.10
Q 11
Replacing GB/T 1596-2005
Fly ash used for cement and concrete
Issued on. JULY 12, 2017
Implemented on. JUNE 1, 2018
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword... 3
1 Scope... 5
2 Normative references... 5
3 Terms and definitions... 6
4 Classification... 6
5 Grade... 7
6 Technical requirements... 7
7 Test methods... 9
8 Inspection rules... 10
9 Packaging, marks, transport and storage... 12
Annex A (Normative) Test method for water demand ratio of fly ash... 13
Annex B (Normative) Test method for water content of fly ash... 15
Annex C (Normative) Test method for strength activity index of fly ash... 17
Foreword
This Standard was drafted in accordance with the rules given in GB/T
1.1-2009.
This Standard replaces GB/T 1596-2005 Fly ash used for cement and
concrete.
Compared with GB/T 1596-2005, the main technical changes in this Standard
are as follows.
- modified “reference sample. complies with GSB 14-1510 Cement
standard sample used for strength testing” to “reference cement.
Portland cement or ordinary Portland cement that complies with GSB
14-1510, or is of strength grade of 42.5 specified in GB 175 and this
Standard” (see 3.2 of this Edition, 3.2 of Edition 2005);
- in technical requirements, added indicators of “SiO2, Al2O3, Fe2O3
total mass fraction, density and strength activity” in “mixed fly ash for
concrete and mortar”; the Grade II fly ash fineness index was modified
from “45μm square hole sieve residue is not greater than 25%” to “45μm
square hole sieve residue is not greater than 30%”; Grade III fly ash loss
was modified from “not greater than 15.0%” to “not greater than 10.0%”
(see 6.1 of this Edition, 6.1 of Edition 2005);
- in technical requirements, added indicators of “SiO2, Al2O3, Fe2O3 total
mass fraction and density” in “fly ash used for cement activity mixed
materials” (see 6.2 of this Edition);
- modified the radioactive indicators from “qualified” to “meet building
body material requirements in GB 6566” (see 6.2 of this Edition, 6.3 of
Edition 2005);
- when using dry or semi-dry desulfurization process, the resulting fly ash
shall be subjected to the detection of hemihydrate calcium sulfite
content; added specified indicators and test methods (see 6.4 and 7.5 of
this Edition);
- added radioactive test sample ratio (see 7.9 of this Edition);
- modified the reference cement mortar fluidity in fly ash water ratio test
from “130mm ~ 140mm” to “145mm ~ 155mm”; modified the test
procedures at the same time (see Annexes A.3 and A.5 of this Edition;
Annexes B.3 and B.5 of Edition 2005).
This Standard was proposed by China Building Materials Federation.
This Standard shall be under the jurisdiction of National Technical Committee
on Cement of Standardization Administration of China (SAC/TC 184).
Main drafting organizations of this Standard. China Building Materials
Academy, Yangtze River Water Resources Commission Academy of
Sciences of the Yangtze River, Shanghai Academy of Building Research,
China Three Gorges Corporation, Zhuzhou Hongxin Special Building Material
Co., Ltd., Xiamen ISO Standard Sand Co. Ltd.
The drafting organizations of this Standard. Yuanbaoshan Power Co., Ltd.,
Huadian Power International Co., Ltd., Zouxian Power Plant, Sichuan Tao
Feng Fly Ash Trade Co., Ltd., Guizhou Mingchuan Fly Ash Co., Ltd., Xuanwei
Power Fly Ash Development Co., Ltd., Shenzhen Weihai Building Materials
Co., Ltd., Shanghai Construction Materials Co., Ltd., Jiangsu Huanghai
Cement Co., Ltd., Xinjiang Tianshan Cement Co., Ltd., Shandong Zhuozhou
Cement Co., Ltd., Ningbo Xinhai Construction Materials Testing Co., Ltd.,
Shanghai Bridge Industrial Co., Ltd., Yunnan Building Materials Products
Quality Inspection Institute, Inner Mongolia Building Materials Product Quality
Inspection Institute.
Main drafters of this Standard. Jiang Lizhen, Zhu Wenshang, Wang Shuyin,
Du Yong, Yang Lixiang, Li Wenwei, Yan Jianjun, Shen Yanjun, Chen Guiquan,
Li Laifang, Xue Yueyu, Yu Haibo, Wu Baohua, Zhu Mintao, Deng Minhui,
Wang Jianbiao, Li Xihua, Chen Wenyao, Gong Bo, He Jiangfang, Wu Feicai,
Gao Huijuan, He Jun, Liu Qingbin, Lin Maosong, Ma Zhaomu, Wang Xingqin,
Ren Fenmei.
Versions of standard substituted by this Standard are.
- GB/T 1596-1979, GB/T 1596-1991, GB/T 1596-2005.
Fly ash used for cement and concrete
1 Scope
This Standard specifies the terms and definitions, classification, grade,
technical requirements, test methods, inspection rules, packaging, marks,
transport and storage of fly ash used for cement and concrete.
This Standard is applicable to the fly ash used as admixture when mixing
mortar and concrete as well as the fly ash used as active mixed material in
cement production.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including
any amendments) applies.
GB 175, Common Portland Cement
GB/T 176, Method for Chemical Analysis of Cement
GB/T 208, STANDARD test method for cement density
GB/T 1345, The Test Sieving Method for Fineness of Cement
GB/T 1346, Standard test method for water requirement for normal
consistency setting time and soundness of the Portland cement
GB/T 2419, Test method for fluidity of cement mortar
GBT 5484, Methods for chemical analysis of gypsum
GB 6566, Limits of radionuclides in building materials
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 fly ash
powder collected in flue gas of pulverized coal stove of power plant
3.2 reference cement
Portland cement or ordinary Portland cement that complies with GSB
14-1510, or is of strength grade of 42.5 specified in GB 175 and this Standard
3.4 reference mortar
mixed by reference cement and specified grade standard sand according to a
mass ratio of 1.3
3.5 testing mortar
mixed by testing sample and specified grade standard sand according to a
mass ratio of 1.3
4 Classification
4.1 According to category of coal, it is divided into F type fly ash (fly ash
collected from the burning of anthracite or bituminous coal) and C type fly ash
(fly ash collected from the calcination of lignite or sub-bituminous coal;
calcium oxide content is generally greater than or equal to 10%).
5 Grade
The fly ash used for mixing mortar and concrete is divided into three grades. I,
II, III.
6 Technical requirements
6.1 Physical and chemical performance requirements
The fly ash used for mixing mortar and concrete shall meet requirements of
Table 1.The fly ash used for cement activity mixed materials shall meet
requirements of Table 1.
6.2 Radioactivity
Meet building body material requirements in GB 6566.
6.3 Alkali content
Represented by the calculated value of Na2O + 0.658K2O. When there are
requirements for alkali content in fly ash application, it shall be confirmed by
the supplier and the purchaser.
7 Test methods
7.1 Fineness
Carry out according to 45μm negative pressure sieve method in GB/T 1345.
Sieving time is 3 min.
7.2 Water demand ratio
In accordance with Annex A.
7.3 Loss, sulfur trioxide, free calcium oxide, silicon dioxide, aluminum oxide,
ferric oxide, alkali content shall be in accordance with GB/T 176.
7.4 Water content
In accordance with Annex B.
7.5 Hemihydrate calcium sulfite
In accordance with GB/T 5484.
7.8 Strength activity index
In accordance with Annex C.
7.9 Radioactivity
Mix well the fly ash and the Portland cement that meets GB 175 requirements
according to a mass ratio of 1.1.Detect according to GB 6566.
8 Inspection rules
8.1 Numbering and sampling
Before leaving factory, the numbering and sampling of fly ash shall be carried
out according to same category and same grade.
8.2 Exit-factory inspection
8.2.1 For the fly ash used for mixing concrete and mortar, the exit-factory
inspection items shall be all items in Table 1 of 6.1 except the loss and
strength activity index. Add 6.4 hemihydrate calcium sulfite (CaSO3 · 1/2H2O)
for the fly ash discharged by using dry or semi-dry desulfurization process.
8.3 Type inspection
8.3.1 The type inspection items for the fly ash used for mixing concrete and
mortar shall be specified in Table 1 of 6.1, 6.2 and 6.4.
8.3.2 The type inspection items for the fly ash used for cement activity
mixed material shall be specified in Table 2 of 6.1, 6.2 and 6.4.
8.4 Determination rules
8.4.1 Exit-factory inspection
8.4.1.1 When the exit-factory inspection items for the fly ash used for mixing
concrete and mortar meet technical requirements of Table 1 of 6.1 and 6.4,
the exit-factory inspection shall be qualified. Should any item fail to meet the
requirements, it is permitted to re-sample from same number for the
re-inspection of all items. The determination shall be based on the
re-inspection results.
8.4.2 Type inspection
8.4.2.1 When the exit-factory inspection items for the fly ash used for mixing
concrete and mortar meet technical requirements of Table 1 of 6.1, 6.2, 6.4,
the type inspection shall be qualified. Should any item fail to meet the
requirements, it is permitted to re-sample from this batch of samples
remained for the re-inspection of all items. The determination shall be based
on the re-inspection results.
8.5 Inspection report
The inspection report shall include exit-factory number, exit-factory inspection
items, classification, grade. When required by the user, the producer shall
send out the inspection results except the strength activity index within 7 days
from the date of issue of the fly ash, and report the result of the strength
activity index within 32 days.
8.6 Arbitration
When the quality of fly ash is controversial, the relevant organizations shall
sign the approved samples and submit them to the quality supervision and
inspection agencies approved by the country at the provincial level or above
for arbitration and inspection.
9 Packaging, marks, transport and storage
9.1 Packaging
Fly ash can be bulk or bagged. The net content per bag is 25 kg or 40 kg. The
net content of each bag shall not be less than 99%. Other packaging
specifications shall be determined negotiated by the supplier and the
purchaser.
9.2 Marks
Bulk fly ash should provide a card, including product name, classification,
grade, net content, batch number, the implementation number of standards,
the name and address of the manufacturer, production date.
Packaged bag of fly ash shall be marked with the same content as bulk fly
ash card.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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