T/UNP 517-2025 Active Group standards

T/UNP 517-2025 Technical Specifications for Compressive Strength Testing of High-Strength Concrete

T/UNP 517-2025

Publish Date: 2025-02-26 Implement Date: 2025-02-26 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/UNP 517-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Concrete and concrete products

Publish Date: 2025-02-26

Implement Date: 2025-02-26

Scope

Main technical content: This standard is applicable to the detection of the compressive strength of C50-C100 high-strength concrete in engineering structures using the rebound method. It specifies that the rebound tester used for detection must meet a number of basic requirements and be calibrated and maintained in accordance with the regulations. Testing personnel should hold relevant certifications and be qualified to perform the test. Before testing, relevant information should be collected, and the test can be conducted on single components or in batches. The sampling quantity and the arrangement rules of the test zones should be specified. During the rebound test, standardized operation procedures should be followed, and the rebound value should be calculated according to specific methods. The test results should be converted and corrected according to different situations, and the strength value of the components should be calculated based on the number of test zones. The content of the test report should be complete, and it is recommended to use a specific format and add a plan distribution diagram of the components.