JC/T 740-2006 English PDF (JC/T740-2006)

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JC/T 740-2006: Portland phosphorous slag cement
JC/T 740-2006
JC
BUILDING MATERIAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.10
Q 11
Record No.: 17608-2006
Replacing JC/T 740-1988 (1996)
Portland Phosphorous Slag Cement
磷渣硅酸盐水泥
ISSUED ON: MAY 6, 2006
IMPLEMENTED ON: OCTOBER 1, 2006
Issued by: National Development and Reform Commission of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative References ... 5 
3 Terms and Definitions ... 6 
4 Composition and Materials ... 6 
5 Strength Grade ... 7 
6 Technical Requirements ... 8 
7 Test Methods ... 9 
8 Inspection Rules ... 10 
9 Packaging, Marking, Transportation and Storage ... 12 
Appendix A (Normative) Granulated Electric Furnace Phosphorous Slag for
Cement Production ... 13 
Appendix B (Normative) Bulk Weight Determination Method for Granulated
Electric Furnace Phosphorous Slag ... 17 
Foreword
This Standard is a revised edition of JC/T 740-1988 (1996) Portland Phosphorous Slag
Cement.
Since the date of implementation, this Standard shall serve as a replacement of JC/T
740-1988 (1996) Portland Phosphorous Slag Cement.
In comparison with JC/T 740-1988 (1996), there are several main changes as follows:
---The mixing amount of granulated electric furnace phosphorous slag in cement
is modified from “20% ~ 40%” to “20% ~ 50%” (Chapter 3 in Version 1988; 4.1
in this Version);
---Chapter “Composition and Materials” is added (Chapter 4 in this Version);
---In strength grade, early-strength Portland phosphorous slag cement is added
(Chapter 4 in Version 1988; Chapter 5 in this Version);
---The requirement of cement fineness is modified from 0.080 mm square-hole
sieve residue “not more than 12%” to “not more than 6.0%” (5.4 in Version 1988;
6.2.1 in this Version);
---The time requirement for the final condensation of Portland phosphorous slag
cement is shortened, namely, time requirement is modified from “shall not
exceed 12 h” to “shall not exceed 10 h” (5.5 in Version 1988; 6.2.2 in this
Version);
---The limitation of ignition loss of Portland phosphorous slag cement is deleted
(5.2 in Version 1988; Chapter 6 in this Version);
---Cement strength index is consistent with GB 1344-1999 Portland Blast Furnace
- Slag Cement, Portland Pozzolana Cement and Portland Fly-ash Cement (5.7
in Version 1988; 6.3.4 in this Version);
---Cement strength test method adopts GB/T 17671-1999 Method of Testing
Cements - Determination of Strength (6.5 in Version 1988; 7.7 in this Version);
---The requirement of chloride ion content and alkali content in cement is added
(6.7 and 6.8 in this Version);
---The stipulation of granulated electric furnace phosphorous slag in cement is
added (Appendix A in this Version);
---The radioactivity detection of granulated electric furnace phosphorous slag is
added (Appendix A.3.4 in this Version);
Portland Phosphorous Slag Cement
1 Scope
This Standard specifies the terms and definitions, material requirements, strength
grade, technical requirements, test methods, inspection rules, packaging, marking,
transportation and storage of Portland phosphorous slag cement.
This Standard is applicable to Portland phosphorous slag cement, which takes
granulated electric furnace phosphorous slag as the primary mixed material.
2 Normative References
Through the reference in this Standard, clauses in the following documents become
clauses of this Standard. In terms of references with a specific date, all the subsequent
modification lists (excluding corrected content) or revised editions are not applicable
to this Standard. However, all parties that reach an agreement in accordance with this
Standard are encouraged to explore the possibility of adopting the latest version of
these documents. In terms of references without a specific date, the latest version is
applicable to this Standard.
GB 175 Portland Cement and Ordinary Portland Cement
GB/T 176 Methods for Chemical Analysis of Cement (GB/T 176-1996, eqv ISO
680: 1990)
GB/T 203 Granulated Blast-furnace Slag Used for Cement Production
GB/T 750 Autoclave Method for Soundness of Portland Cement
GB/T 1345 The Test Sieving Method for Fineness of Cement
GB/T 1346 Test Methods for Water Requirement of Normal Consistency, Setting
Time and Soundness of the Portland Cement (GB/T 1346-2001, eqv ISO 9597:
1989)
GB/T 1596 Fly Ash Used for Cement and Concrete
GB/T 2847 Pozzolanic Materials Used for Cement Production (GB/T 2847-1996,
neq ISO 863: 1990)
GB/T 5483 Gypsum and Anhydrite (GB/T 5483-1996, neq ISO 1587: 1975)
GB/T 1871.1 Phosphate Rock and Concentrate - Determination of Phosphorous
Pentoxide Content - Quinoline Phosphomolybdate Gravimetric and Volumetric
8% of the total mass of cement. After the replacement, the mixing amount of granulated
electric furnace phosphorous slag in cement shall not be less than 20%.
4.2 Materials
4.2.1 Plaster
Natural plaster shall comply with Type-G or Type-A Level-2 (or above) plaster or
anhydrite stipulated in GB/T 5483.
When by-product plaster, whose main ingredient is calcium sulfate in industrial
production, is adopted, the performance of cement shall be proved by tests to be
harmless.
4.2.2 Granulated electric furnace phosphorous slag
Granulated electric furnace phosphorous slag shall comply with relevant stipulations
in Appendix A and Appendix B in this Standard.
4.2.3 Granulated blast-furnace slag
Granulated blast-furnace slag shall comply with relevant stipulations in GB/T 203.
4.2.4 Pozzolanic material
Pozzolanic material shall comply with relevant stipulations in GB/T 2847.
4.2.5 Fly ash
Fly ash shall comply with relevant stipulations in GB/T 1596.
4.2.6 Limestone
In limestone, the content of aluminum oxide shall not exceed 2.5%.
4.2.7 Kiln dust
Kiln dust shall comply with relevant stipulations in JC/T 742.
4.2.8 Grinding aid
Grinding aid may be added in the grinding of phosphorous slag cement; the adding
amount shall not exceed 0.5% of the mass of cement. Grinding aid shall comply with
relevant stipulations in JC/T 667.
5 Strength Grade
Strength grade of phosphorous slag cement is divided into 32.5, 32.5R, 42.5, 42.5R,
52.5 and 52.5R.
6 Technical Requirements
6.1 Chemical Composition
6.1.1 Magnesium oxide
In clinker, the content of magnesium oxide shall not exceed 5.0%. If cement is qualified
in soundness test conducted through the autoclave method, the content of magnesium
oxide in clinker is allowed to become 6.0%.
6.1.2 Sulphur trioxide
In cement, the content of sulphur trioxide shall not exceed 4.0%.
6.1.3 Chloride ion content
In cement, the content of chloride ion shall not exceed 0.06%.
6.1.4 Alkali content
Alkali content in cement shall be expressed in the calculated value of Na2O + 0.658
K2O. When the use of active aggregate needs to restrict alkali content in cement, it
shall be negotiated and determined by the supply-side and the demand-side.
6.2 Physical Performance
6.2.1 Fineness
Cement fineness shall be expressed in 0.080 mm square-hole sieve residue; it shall
not exceed 6.0%.
6.2.2 Condensation time
Initial cement condensation shall not be earlier than 45 min; final cement condensation
shall not be later than 10 h.
6.2.3 Soundness
Cement soundness shall be tested through the autoclave method. Cement must be
qualified in soundness.
6.2.4 Strength
In terms of phosphorous slag cement, the strength of various ages of ...