Cement packaging must be clearly labeled with essential information, including the applicable standard, cement type and code, strength grade, manufacturer's name, production license mark (QS), serial number, factory number, packaging date, and net weight. The two sides of the bag should be printed in different colors depending on the type of cement. For example, Portland cement and ordinary Portland cement are typically marked in red, slag Portland cement in green, while pozzolanic Portland cement, fly ash Portland cement, and composite cement are usually marked in black or blue.
When shipped in bulk, cards containing the same information as the bag labels must be provided for reference and verification.
Applicability
Portland cement is not suitable for the following applications:
1. Mass concrete structures, where excessive heat generation can lead to cracking.
2. Concrete used in seawater environments, as it may lead to corrosion and reduced durability.
3. Sulfate-resistant or high-temperature resistant concrete, as Portland cement lacks the necessary properties to withstand such conditions effectively.
It’s important to choose the right type of cement based on the specific requirements of each construction project to ensure long-term performance and structural integrity.
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