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GB/T 200: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 200-2025 | English | 275 |
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Moderate-heat portland cement, low-heat portland cement
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| GB/T 200-2017 | English | 135 |
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Moderate-heat Portland cement, low-heat Portland cement
| Valid |
| GB 200-2003 | English | 319 |
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3 days
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[GB/T 200-2003] Moderate heat Portland cement Low heat Portland cement Low heat Portland slag cement
| Obsolete |
| GB 200-1989 | English | 239 |
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2 days
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Moderate heat portland cement--Low heat portland slag cement
| Obsolete |
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GB/T 200-2025: Moderate-heat portland cement, low-heat portland cement---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/GBT200-2025
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.10
CCS Q 11
Replacing GB/T 200-2017
Moderate-heat Portland Cement, Low-heat Portland
Cement
中热硅酸盐水泥, 低热硅酸盐水泥
Issued on: OCTOBER 31, 2025
Implemented on: NOVEMBER 1, 2026
Issued by. State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword... 3
1 Scope... 6
2 Normative References... 6
3 Terms and Definitions... 7
4 Composition and Materials... 7
5 Codes and Strength Grades... 7
6 Technical Requirements... 8
7 Test Methods... 10
8 Inspection Rules... 11
9 Exit-factory, Delivery and Acceptance... 12
10 Packaging, Marking, Transportation and Storage... 13
Appendix A (normative) Calculation of Mineral Composition of Medium-heat Cement
and Low-heat Cement... 15
Moderate-heat Portland Cement, Low-heat Portland
Cement
1 Scope
This document specifies the composition and materials, codes and strength grades, technical
requirements, test methods, inspection rules, exit-factory, delivery and acceptance, packaging,
marking, transportation and storage of moderate-heat Portland cement (hereinafter referred to
as “moderate-heat cement”) and low-heat Portland cement (hereinafter referred to as “low-heat
cement”).
This document applies to both moderate-heat Portland cement and low-heat Portland cement.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 176 Method for Chemical Analysis of Cement
GB/T 750 Test Method for Autoclave Expansion of Cement
GB/T 1346 Test Methods for Water Requirement of Standard Consistency, Setting Time and
Soundness of the Portland Cement
GB/T 5483 Natural Gypsum
GB 6566 Limits of Radionuclides in Building Materials
GB/T 8074 Testing Method for Specific Surface of Cement - Blaine Method
GB/T 9774 Sacks for Packing Cement
GB/T 12573 Sampling Method for Cement
GB/T 12959 Test Methods for Heat of Hydration of Cement
GB/T 17671 Test Method of Cement Mortar Strength (ISO method)
GB/T 21372 Portland Cement Clinker
GB/T 26748 Cement Grinding Aids
GB 31893 Limit and Determination of the Water-soluble Chromium (VI) Content for Cement
3 Terms and Definitions
The following terms and definitions are applicable to this document.
3.1 moderate-heat Portland cement
A hydraulic cementing material with moderate heat of hydration, made by grinding Portland
cement clinker of appropriate composition, and the addition of an appropriate amount of
gypsum.
3.2 low-heat Portland cement
A hydraulic cementing material with low heat of hydration, made by grinding Portland cement
clinker of appropriate composition, and the addition of an appropriate amount of gypsum.
4 Composition and Materials
4.1 Moderate-heat Cement Clinker
The content of tricalcium silicate (3CaO SiO2, C3S) in moderate-heat cement clinker is not
greater than 55.0%, the content of tricalcium aluminate (3CaO Al2O3, C3A) is not greater than
6.0%, and the content of free calcium oxide (f-CaO) is not greater than 1.0%.
4.2 Low-heat Cement Clinker
The content of dicalcium silicate (2CaO SiO2, C2S) in low-heat cement clinker is not less than
40.0%, the content of tricalcium aluminate is not greater than 6.0%, and the content of free
calcium oxide is not greater than 1.0%.
4.3 Natural Gypsum
Natural gypsum shall conform to Class G or Class M Grade II (inclusive) or above as specified
in GB/T 5483.
4.4 Cement Grinding Aids
Cement grinding aids may be added during the grinding of medium-heat cement and low-heat
cement. The amount added shall not exceed 0.5% of the mass of medium-heat cement or low-
heat cement, and the cement grinding aids shall conform to the provisions of GB/T 26748.
5 Codes and Strength Grades
Medium-heat cement, code P MH, strength grade 42.5;
Low-heat cement, code P LH, strength grades are divided into 32.5 and 42.5.
6 Technical Requirements
6.1 Chemical Composition
6.1.1 Magnesium oxide (MgO)
The content (mass fraction) of magnesium oxide in medium-heat cement and low-heat cement
shall not exceed 5.0%.
If medium-heat cement and low-heat cement pass the autoclave soundness test, the content
(mass fraction) of magnesium oxide in medium-heat cement and low-heat cement can be
relaxed to 6.0%.
6.1.2 Sulfur trioxide (SO3)
The content (mass fraction) of sulfur trioxide shall not exceed 3.5%.
6.1.3 Loss on ignition (LOI)
The loss on ignition (mass fraction) shall not exceed 3.0%.
6.1.4 Insoluble matter (IR)
The content (mass fraction) of insoluble matter shall not exceed 0.75%.
6.1.5 Chloride ions (Cl)
The content (mass fraction) of chloride ions shall not exceed 0.06%.
6.1.6 Water-soluble chromium (VI) in medium-heat cement and low-heat cement
The water-soluble chromium (VI) content shall comply with the requirements of GB 31893.
6.2 Alkali Content (selective indicator)
The alkali content is expressed as w(Na₂O) + 0.658 w(K₂O). When the user requests low-alkali
medium-heat cement or low-heat cement, the alkali content (mass fraction) in the medium-heat
or low-heat cement shall not exceed 0.60% or shall be determined through negotiation between
the buyer and seller.
6.3 Tricalcium Silicate, Dicalcium Silicate, and Tricalcium Aluminate (selective
indicator)
When requested by the user, the content of tricalcium silicate (C₃S), dicalcium silicate (C₂S)
and tricalcium aluminate (C₃A) in medium-heat cement and low-heat cement shall comply with
the provisions of Table 1 or shall be determined through negotiation between the buyer and
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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