T/CCTAS 268-2025 Active Group standards

T/CCTAS 268-2025 Urban rail transit tunnel lining specification for fluid concrete technology

Publish Date: 2025-11-05 Implement Date: 2025-12-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CCTAS 268-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Concrete and concrete products

Publish Date: 2025-11-05

Implement Date: 2025-12-01

Scope

This standard specifies the materials, concrete performance, mix design, production and transportation, construction and maintenance, and quality control of flowable concrete used for the secondary lining of urban rail transit tunnels. The standard content is based on mature technology and engineering practice and is highly feasible. By establishing a standard system for the entire process of flowable concrete technology, production, construction, and quality inspection, this standard helps ensure the stable quality of flowable concrete and standardize and regulate aspects such as production and construction, thereby improving the concrete quality of the secondary lining of urban rail transit tunnels.