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GB/T 11969-2020: Test methods of autoclaved aerated concrete
Status: Valid GB/T 11969: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 11969-2020 | English | 389 |
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4 days [Need to translate]
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Test methods of autoclaved aerated concrete
| Valid |
GB/T 11969-2020
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| GB/T 11969-2008 | English | 679 |
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3 days [Need to translate]
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Test methods of autoclaved aerated concrete
| Obsolete |
GB/T 11969-2008
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| GB/T 11969-1997 | English | 199 |
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General requirements for test methods of aerated concrete
| Obsolete |
GB/T 11969-1997
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| GB/T 11969-1989 | English | RFQ |
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3 days [Need to translate]
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General requirments for test methods of aerated concrete
| Obsolete |
GB/T 11969-1989
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PDF similar to GB/T 11969-2020
Basic data | Standard ID | GB/T 11969-2020 (GB/T11969-2020) | | Description (Translated English) | Test methods of autoclaved aerated concrete | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q14 | | Classification of International Standard | 91.100.30 | | Word Count Estimation | 21,236 | | Date of Issue | 2020-09-29 | | Date of Implementation | 2021-08-01 | | Older Standard (superseded by this standard) | GB/T 11969-2008 | | Regulation (derived from) | National Standard Announcement No. 20 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 11969-2020: Test methods of autoclaved aerated concrete---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.
Test methods of autoclaved aerated concrete
ICS 91.100.30
Q14
National Standards of People's Republic of China
Replace GB/T 11969-2008
Performance test method of autoclaved aerated concrete
2020-09-29 released
2021-08-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅰ
1 Scope 1
2 Terms and definitions 1
3 Dry density, moisture content and water absorption 1
4 Mechanical properties 3
5 Dry shrinkage 9
6 Frost resistance 12
7 Carbonization 14
8 Dry and wet cycle 17
9 Test report 17
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 11969-2008 "Test Method for Performance of Autoclaved Aerated Concrete", and compared with GB/T 11969-2008, except
The main technical changes besides editorial changes are as follows.
---Added terms and definitions (see Chapter 2);
---Modified the requirements of test piece measuring instruments (see 3.1, 4.1, 5.1, 6.1, 7.1, 8.1, 2.1, 3.1, 4.1, 5.1, 6.1, 7.1 of the.2008 edition);
---Added the calculation method of volumetric water content and volumetric water absorption (see 3.5.3, 3.5.5);
---Modified the moisture content control method during the compressive strength test (see 4.2.7.2, 3.2.6.2 of the.2008 edition);
---Modified the drawing method of drying shrinkage characteristic curve (see 5.4.4.3, 4.4.4.3 of the.2008 edition);
--- Modified the frost resistance test method (see Chapter 6, Chapter 5 of the.2008 edition).
This standard was proposed by the China Building Materials Federation.
This standard is under the jurisdiction of the National Cement Products Standardization Technical Committee (SAC/TC197).
Drafting organizations of this standard. China Aerated Concrete Association, Tongji University, Zhejiang Kaiyuan New Wall Material Co., Ltd., Shantou Bo Environmental Protection
Materials Co., Ltd., Changxing Yitong Co., Ltd., Anhui Keda Electromechanical Co., Ltd., Tianjin Building Material Product Quality Supervision and Testing Center, Guangzhou
Zhoushan Development Environmental Protection Building Material Co., Ltd., Zhejiang Yuanzhu Housing Industrialization Co., Ltd., Jiangsu Ningguo Wear-resistant Material Co., Ltd., Zhoushan Quality Technology
Technical Supervision and Testing Institute, Zhoushan Hongye Environmental Protection Material Co., Ltd., Zhejiang Tianda Environmental Protection Co., Ltd., Fujian Qunfeng Machinery Co., Ltd.,
Changzhou Building Materials Research Institute Co., Ltd., Zhejiang Hangjia Zetong Building Energy-saving New Materials Co., Ltd., Guangxi Lulin Building Materials Technology Co., Ltd.
Company, Zhejiang Dexin New Material Co., Ltd., Yanshi Huatai Comprehensive Utilization Building Material Co., Ltd., Zhejiang Building Research Institute Co., Ltd.
Company, Shaanxi Ningyuan New Material Technology Co., Ltd., Changzhou Jiangshan New Building Material Co., Ltd., Zhejiang Fengzhong Building Material Technology Co., Ltd.
Co., Ltd., Guangxi Construction Engineering Group Construction Industry Investment Co., Ltd., Zhejiang Hengzun New Material Technology Co., Ltd., Hubei Chufeng Construction Group
Jingzhou Kaiyuan New Materials Co., Ltd.
The main drafters of this standard. Jiang Yong, Su Yufeng, Lu Jie, Cheng Caiyuan, Chen Hongping, Chen Xinjiang, Bai Xiqing, He Tieming, Zhou Jianguo, Lai Shaozhong,
Liu Yi, Wang Mingjun, Xiong Haidong, Tian Senyue, Zhang Xiaohai, Li Cunjun, Ren Xiande, Wang Quansheng, Xu Yuxian, Yang Shangfu, Zhang Benjian, Dai Xiaojun,
He Zhiang, Li Junqi, Chen Haiming, Ma Yingjie, Li Wenzhi, Shu Kai, Wu Kai, Zhang Hui, Liu Pinde, Sun Zhengyi, Hu Shijun, Zhu Ruisheng.
The previous versions of the standard replaced by this standard are as follows.
---GB 11969-1989, GB/T 11969-1997, GB/T 11969-2008;
---GB 11970-1989, GB/T 11970-1997;
---GB 11971-1989, GB/T 11971-1997;
---GB 11972-1989, GB/T 11972-1997;
---GB 11973-1989, GB/T 11973-1997;
---GB 11974-1989, GB/T 11974-1997;
---GB 11975-1989, GB/T 11975-1997.
Performance test method of autoclaved aerated concrete
1 Scope
This standard specifies the dry density, moisture content and water absorption of autoclaved aerated concrete, mechanical properties, drying shrinkage, frost resistance, carbonization, dry-wet cycle
Test methods and test reports for items such as rings.
This standard applies to autoclaved aerated concrete used in civil and industrial buildings.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Sample
A small amount of substance representing the value of the overall characteristic used for inspection.
Note. The sample includes autoclaved aerated concrete blocks, blocks of the same mold in the production of autoclaved aerated concrete slabs, end blocks or sawed parts in the board.
2.2
Specimen
A small piece of material used for performance inspection test sawn to the specified size from the sample.
2.3
Contrastspecimen
At the same time sawing in the same sample with the test piece for comparison or keeping another group of test pieces.
3 Dry density, moisture content and water absorption
3.1 Instruments and laboratory
3.1.1 Electric heating blast drying oven. the highest temperature is.200℃.
3.1.2 Pallet balance or scale. Weigh.2000g, and sense 0.1g.
3.1.3 Steel plate ruler. the specification is 300mm, the graduation value is 1mm.
3.1.4 Vernier caliper or digital caliper. the specification is 300mm, and the graduation value is 0.1mm.
3.1.5 Constant temperature water tank. water temperature (20±2)℃.
3.1.6 Test room. room temperature (20±5)℃.
3.2 Specimen
3.2.1 The preparation of the test piece adopts a machine saw. The specimen should not be wetted during sawing.
3.2.2 A group of test pieces should be sawed up, middle and down in the center part of the product gas direction, and the upper surface of the "upper" block is away from the top surface of the product
30mm, the "middle" block is at the center of the product, and the bottom surface of the "down" block is 30mm away from the bottom surface of the product.
3.2.3 The surface of the test piece should be flat without cracks or obvious defects. The allowable size deviation should be ±1mm, and the flatness should not be greater than 0.5mm.
The verticality should not be greater than 0.5mm. The specimens shall be numbered block by block, and the specimens sawed from the same specimen shall be the same group of specimens, with "Ⅰ, Ⅱ, Ⅲ
"Means the group number; when the same group of test pieces has upper, middle and lower positions, the following marks "up, middle, and lower" indicate the position of the test piece; when the same group
If there is no position requirement for the test piece, it shall be marked with "1, 2, 3" below to distinguish between different test pieces; parallel test pieces shall be marked with "I, II, III" and superscripted
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