This national standard specifies the classification, terms and definitions, material requirements, strength level, technical requirements, test method, test rules, packaging, markings, transportation and storage.
This national standard is applicable to sulfate-resistance Portland cements.
Foreword 1. Scope 2. Normative References 3. Classification 4. Terms and Definitions 4.1 Moderate sulfate resistance Portland cement 4.2 High sulfate-resistance Portland cement 5. Material requirements 5.1 Portland cement clinker 5.2 Gypsum 5.3 Grinding aid 6. Strength level 7. Technical requirements 7.1 Tricalcium silicate and tricalcium aluminate 7.2 Loss on ignition 7.3 Magnesia 7.4 Sulfuric anhydride 7.5 Insoluble substance 7.6 Specific surface 7.7 Setting time 7.8 Soundness 7.9 Strength 7.10 Alkali content 7.11 Sulfate-resistance 8. Test method 8.1 Tricalcium silicate and tricalcium aluminate 8.2 Loss on ignition 8.3 Magnesium oxide 8.4 Sulfur trioxide 8.5 Insoluble substance 8.6 Specific surface 8.7 Setting time 8.8 Soundness 8.9 Strength 8.10 Alkali content 8.11 Sulfate-resistance 9. Test rules 9.1 Serial number and/or sampling 9.2 Test Classification 9.3 Finished cement 9.4 Rejected product and unacceptable product 9.5 Test report 9.6 Delivery and acceptance 10. Package, marking, transportation and storage 10.1 Package 10.2 Marking 10.3 Transportation and storage
This national standard specifies the classification, terms and definitions, material requirements, strength level, technical requirements, test method, test rules, packaging, markings, transportation and storage.
This national standard is applicable to sulfate-resistance Portland cements.
Contents of GB 748-2005
Foreword
1. Scope
2. Normative References
3. Classification
4. Terms and Definitions
4.1 Moderate sulfate resistance Portland cement
4.2 High sulfate-resistance Portland cement
5. Material requirements
5.1 Portland cement clinker
5.2 Gypsum
5.3 Grinding aid
6. Strength level
7. Technical requirements
7.1 Tricalcium silicate and tricalcium aluminate
7.2 Loss on ignition
7.3 Magnesia
7.4 Sulfuric anhydride
7.5 Insoluble substance
7.6 Specific surface
7.7 Setting time
7.8 Soundness
7.9 Strength
7.10 Alkali content
7.11 Sulfate-resistance
8. Test method
8.1 Tricalcium silicate and tricalcium aluminate
8.2 Loss on ignition
8.3 Magnesium oxide
8.4 Sulfur trioxide
8.5 Insoluble substance
8.6 Specific surface
8.7 Setting time
8.8 Soundness
8.9 Strength
8.10 Alkali content
8.11 Sulfate-resistance
9. Test rules
9.1 Serial number and/or sampling
9.2 Test Classification
9.3 Finished cement
9.4 Rejected product and unacceptable product
9.5 Test report
9.6 Delivery and acceptance
10. Package, marking, transportation and storage
10.1 Package
10.2 Marking
10.3 Transportation and storage
