GB/T 23439-2009
AbolishedExpansive agents for concrete
混凝土膨胀剂
Application Summary AI generated
GB/T 23439-2009 specifies the definition, classification, technical requirements, test methods, and inspection rules for expansive agents used in concrete. It is applied in the construction industry for producing shrinkage-compensating concrete, such as in mass concrete foundations, underground structures, and waterproof concrete slabs, to reduce cracking caused by drying shrinkage. The standard ensures consistent performance of expansive agents in civil engineering projects requiring enhanced durability and crack resistance.
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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.