GB 199-1990
AbolishedRapid harding portland cement
快硬硅酸盐水泥
Application Summary AI generated
GB 199-1990 specifies the technical requirements, test methods, inspection rules, and packaging for rapid hardening Portland cement, which is characterized by achieving high early strength within 24 hours. This standard is applied in construction projects requiring fast turnaround, such as emergency repairs, road paving, and precast concrete elements where accelerated setting and strength gain are critical. It ensures the cement meets performance criteria for use in cold weather concreting or situations demanding rapid demolding and load-bearing capability.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.