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GB/T 1346-2024 English PDF (GB/T 1346-2011, GB/T 1346-2001)

GB/T 1346-2024_English: PDF (GB/T1346-2024)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 1346-2024EnglishRFQ ASK 3 days [Need to translate] Test methods for water requirement of standard consistency, setting time and soundness of the portland cement Valid GB/T 1346-2024
GB/T 1346-2011English85 Add to Cart 0--9 seconds. Auto-delivery Test methods for water requirement of normal consistency, setting time and soundness of the Portland cement Valid GB/T 1346-2011
GB/T 1346-2001English359 Add to Cart 3 days [Need to translate] Test methods for water requirement of normal consistency, setting time and soundness of the Portland cements Obsolete GB/T 1346-2001
GB/T 1346-1989English279 Add to Cart 3 days [Need to translate] Standard test method--Water requirement for normal consistency, setting time and soundness of the portland cement Obsolete GB/T 1346-1989


BASIC DATA
Standard ID GB/T 1346-2024 (GB/T1346-2024)
Description (Translated English) Test methods for water requirement of standard consistency, setting time and soundness of the portland cement
Sector / Industry National Standard (Recommended)
Date of Implementation 2025-07-01
Older Standard (superseded by this standard) GB/T 1346-2011

BASIC DATA
Standard ID GB/T 1346-2011 (GB/T1346-2011)
Description (Translated English) Test methods for water requirement of normal consistency, setting time and soundness of the portland cement
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q11
Classification of International Standard 91.100.10
Word Count Estimation 12,117
Date of Issue 2011-07-20
Date of Implementation 2012-03-01
Older Standard (superseded by this standard) GB/T 1346-2001
Quoted Standard JC/T 727, JC/T 729, JC/T 955
Adopted Standard ISO 9597-2008, NEQ
Drafting Organization China Building Materials Academy
Administrative Organization National Standardization Technical Committee of cement
Regulation (derived from) Announcement of Newly Approved National Standards No. 10 of 2011
Proposing organization China Building Materials Federation
Issuing agency(ies) Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China
Summary This standard specifies the normal consistency of cement water, setting the time and free calcium oxide caused by the soundness of the principle of testing methods, equipment, materials, test conditions and side given method. This standard applies to portland cement, ordinary portland cement, slag cement, fly ash cement, pozzolana Portland cement, composite portland cement, and the other by the method specified varieties of cement.

BASIC DATA
Standard ID GB/T 1346-2001 (GB/T1346-2001)
Description (Translated English) Test methods for water requirement of normal consistency, setting time and soundness of the portland cements
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Q11
Classification of International Standard 91.100.10
Word Count Estimation 9,995
Date of Issue 2001/4/29
Date of Implementation 2001/10/1
Older Standard (superseded by this standard) GB/T 1346-1989
Quoted Standard JC/T 727-1982 (1996); JC/T 729-1989 (1996),
Adopted Standard ISO 9597-1989, MOD
Drafting Organization China Building Materials Science Acedemy Cement and New Building Materials Science Institute
Administrative Organization National Cement Standardization Technical Committee
Regulation (derived from) Announcement of Newly Approved National Standards 2011 No. 10
Proposing organization State Building Materials Industry Bureau
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary This Standard specifies the standard consistency water cement setting time and soundness test methods by free calcium oxide caused. This Standard is applicable to Portland cement, Portland cement, mineral note Portland cement, fly ash cement, pozzolana cement, composite Portland cement and other designated uses this standard Variety of cement.


ICS 91.100.10 Q 11 NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Replacing GB/T 1346-2001 Test methods for Water Requirement of Normal Consistency, Setting Time and Soundness of the Portland Cement (ISO 9597. 2008, Cement - Test Methods - Determination of Setting Time and Soundness, NEQ) ISSUED ON. JUNE 20, 2011 IMPLEMENTED ON. MARCH 1, 2012 Jointly Issued by. General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ); Standardization Administration (SAC) of the People's Republic of China. GB 3. No action is required - Full-copy of this standard will be automatically & immediately delivered to your EMAIL address in 0~60 minutes. Foreword This standard was drafted according to the rules specified in GB/T 1.1-2009. This standard replaces GB/T 1346-2001 "Test Methods for Water Requirement of Normal Consistency, Setting Time and Soundness of the Portland Cements" Compared with GB/T 1346-2001, the main changes of this standard are as follows. - "Each mould shall be equipped with a flat glass plate larger than the mould and at least 2.5 mm thick" is changed into "each mould shall be equipped with a flat glass base-plate or metal base-plate with the side length or diameter of about 100mm and thickness of 4mm~ 5mm" (see 4.2 of this standard and 4.2 of 2001 edition ) - As for graduated cylinder or burette, "the minimal graduation is 0.1mL and the precision is 1%" is changed into "the precision is ±0.5mL" (see 4.7 of this standard and 4.7 of 2001 edition); - "After mixing, the cement paste must be loaded into the mould on the glass plate at once. The cement paste should be pug, vibrated lightly several times and screeded smoothly." is changed into "Immediately after mixing, the cement paste of right amount shall be loaded into the mould on the glass base-plate at a time; remove the voids in the paste by gently tapping the slightly overfilled mould five times with a straight-edged knife of about 25 mm in width, and then slightly incline the straight-edged knife to the mould and gently saw the excessive paste outward at the point about 1/3 of the upper surface of the mould, and then plaster the top again from the edge for having a smooth surface. During sawing the excessive paste and screeding, paste shall not be compacted" (see 7.3 of this standard and 7.3 of 2001 edition.) - "When the initial/final setting time arrived, the repeat of the tests should be done at once. When the results of two time tests were same as each other, the result can be determined as initial/final setting time." is changed into "When the initial setting time arrived, the repeat of the tests should be done at once. When the results of two time tests were same as each other, the result can be determined as initial setting time. When the final time arrives, the final setting time can be confirmed by repeating the test in two other positions. The final setting time is determined to be reached when the results of two times are the same" (See 8.5 of this standard and 8.5 of 2001 edition); - "Two glass plates (75 g ~ 85 g/glass plate) are prepared for one Le Chatelier. " is changed into "Two glass plates of 80mm in side length or diameter and 4mm~ 5mm in thickness shall be prepared for one Le Chatelier" (See 9.1 of this standard and 9.1 of 2001 edition); - "pug the cement paste with knife (about 10 mm in width) several times using the other hand." is changed into "pug the paste surface with knife (about 25 mm in width) three times using the other hand" (see 9.2 of this standard and 9.2 of 2001 edition); - "After mixing, the cement paste must be loaded into the mould at once. The cement paste should be pug, vibrated lightly several times and screeded smoothly." is changed into "After mixing, the cement paste shall be loaded into cone mould at once. The paste surface should be pug and vibrated lightly 5 times with a straight-edge knife of about 25 mm in width." (see 10.3.2 of this standard and 10.3.2 of 2001 edition); - "When the adjustment approach on amount of water is used, the normal consistency of cement paste must be accordant with the consistency obtained when the dropping depth of the test cone is 28 mm ± 2 mm." is changed into "When the adjustment approach on amount of water is used, the normal consistency of cement paste must be accordant with the consistency obtained when the dropping depth of the test cone is 30mm± 1mm" (see 10.3.3 of this standard and 10.3.3 of 2001 edition). This standard is corresponding to ISO 9597. 2008 "Cement-Test methods-Determination of setting time and soundness", but not equivalent to it. This standard was proposed by China Building Materials Federation. This standard is under the jurisdiction of the National Technical Committee on Cements of Standardization Administration of China (SAC/TC 184). Chief Drafting Organizations. China Building Materials Academy, Xiamen Iso Standard Sand Co., Ltd., Zhejiang Zhongfu Construction Group Co., ltd. Participating drafting organizations. Xinjiang Tianshan Cement Co., Ltd., Sichuan Esheng Cement Group Co., Ltd, Yunnan Hongta Dianxi Cement Co., Ltd., Yunnan Kunsteel Cement Building Materials Group Co., Ltd., LuQuan QuZhai Cement Co., Ltd., Zhongcai Hanjiang Cement Co., Ltd., Cement Plant of Jizhong Energy Resources Co., Ltd., Shaanxi Shengwei Building materials Group Co., Ltd., Guangling Jinghua Chemical Group Co., Ltd., Henan Tongli cement Co., Ltd., Yunnan Xingjian Cement Co., Ltd., Ningxia Saima industry Co., Ltd., Hefei Cement Research & Design Institute, Cement Quality Supervisior & test laboratory of ShanDong Province, Guangdong Building Material Research Institute, Xuzhou Institute for Products Quality Supervision and Inspection. Chief drafting staffs. Jiang Lizhen, Liu Chen, Yan Bilan, Cui Xiangyang, Xiao Zhongming, Zhu Wengao, Li Shengtai, Liu Ge, Yu Ligang, Xu Juehui, Wang Yongqing, Xia Zhongyong, Wang Jianxin. The previous editions of the standards replaced by this standard are as. - GB/T 1346-1989; - GB/T 1346-2001. Contents 1 Scope .. 1 2 Normative References .. 1 3 Principle... 1 4 Instruments and Equipment.. 2 5 Materials... 4 6 Testing Conditions ... 4 7 Determination Methods for Water Requirement of Normal Consistency (Standard Method) ... 5 8 Determination Method of Setting Time ... 5 9 Determination of Soundness (Standard Method) ... 7 10 Determination Methods for Water Requirement of Normal Consistency (Replacement Method) ... 7 11 Determination of Soundness (Replacement Method)... 8 12 Test Report ... 9  1Test methods for Water Requirement of Normal Consistency, Setting Time and Soundness of the Portland Cement 1 Scope This standard specifies the principle, instruments and equipment, materials, test conditions and determination methods of test methods for water requirement of normal consistency, setting time and volume soundness (caused by free calcium oxide) of the portland cements. This method is applicable to portland cement and ordinary portland cement, portland slag cement, portland fly-ash cement, portland pozzolana cement, composite portland cement and other cements specified to adopt this method. 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. JC/T 727 Apparatus for determining normal consistency and setting time of cement paste JC/T 729 Mixer for cement paste JC/T 955 Boiling box for determining soundness of cement 3 Principle 3.1 Normal consistency of portland cements Cement paste of normal consistency has a specified resistance to the dropping of a standard test bar (or test cone). The water required for such a paste shall be determined by testing the penetrations of pastes with different water contents. 3.2 Setting time The setting time is the time required for a needle to drop into the cement paste of normal consistency for a certain depth. 3.3 Soundness 3.3.1 Le Chatelier is used to indicate the volume expansion of cement paste of normal consistency by determining the relative displacement of two needles boiled in Le Chatelier. 3.3.2 Pat method is used to indicate the volume soundness by observing the overall change of paste pat of normal consistency. 5humidity shall not be less than 90%. 7 Determination Methods for Water Requirement of Normal Consistency (Standard Method) 7.1 Preparation Work before Test 7.1.1 The sliding bar of Vicat apparatus can slip freely. Mould and glass base-plate shall be cleaned with wet cloth, and mould shall be placed on the base-plate. 7.1.2 The pointer shall indicate the Zero when the test bar is adjusted to touch the glass plate; 7.1.3 The mixer shall operate normally. 7.2 Mixing the cement paste Use mixer to mix cement paste. clean the agitator kettle and agitator blade with wet cloth, pour water into the agitator kettle, add 500g cement into water within 5s~ 10s, prevent water and cement from spilling; place the agitator kettle on the base of agitator, raise it to the mixing position, start the mixer and mix at low speed for 120s; scrap cement paste on blade and kettle wall into the kettle, and then mix at high-speed for 120s before stopping. 7.3 Determination procedure of water requirement of normal consistency Immediately after blending, the cement paste of right amount shall be loaded into the mould on the glass base-plate at a time; remove the voids in the paste by gently tapping the slightly overfilled mould five times with a straight-edged knife of about 25 mm in width, and then slightly incline the straight-edged knife to the mould and gently saw the excessive paste outward at the point about 1/3 of the upper surface of the mould, and then plaster the top again from the edge for having a smooth surface. During sawing the excessive paste and screeding, paste shall not be compacted. Then the mould and base-plate shall be rapidly moved on to the Vicat apparatus, and the center of the mould shall be located under the test bar and the test bar shall be lowered to the surface of cement paste. The screw shall be tightened for 1s ~ 2s, then released suddenly so the test bar may drop into the cement paste freely and vertically. After the test bar stopped dropping or was released for 30 s, the distance between the test bar and base-plate shall be recorded. After test bar is raised, the test bar should be cleaned at once. The whole operation shall be finished within 1.5min after mixing. The normal consistency of cement paste shall be accordant with the consistency obtained when the test bar is dropped into the cement paste with the distance 6 mm ± 1 mm from the base-plate. The quantity of water for mixing is the water requirement of normal consistency of cement (P). The unit is the percent according to the mass of cement. 8 Determination Method of Setting Time 8.1 Preparation work before test When the pointer of instrument for measuring setting time is adjusted to touch the glass  6 plate, the pointer shall indicate Zero. 8.2 Preparation of sample After the cement paste of normal consistency is made according to the water requirement of normal consistency and 7.2 and loaded in the mould and scraped according to 7.3, it shall be moved into humidity-maintenance box. The time when the cements are totally added into the water shall be recorded as the initial setting time. 8.3 Determination of initial setting time ... ......