T/GDJSKB 031-2025 Active Group standards

T/GDJSKB 031-2025 Precast Concrete Components for Building: Precast Beams, Precast Slabs, Precast Columns, and Precast Stairs

T/GDJSKB 031-2025 Prefabricated concrete building components: Prefabricated beams, prefabricated floor slabs, prefabricated columns, and prefabricated stairs

Publish Date: 2025-05-15 Implement Date: 2025-08-01 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/GDJSKB 031-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Concrete products

ICS Name: Integrated Building Components

Publish Date: 2025-05-15

Implement Date: 2025-08-01

Scope

Scope: This document specifies the classification and marking of precast concrete components for construction, including materials, requirements, test methods, inspection rules, product marking and accompanying documents, lifting, storage, and transportation. This document applies to reinforced concrete precast beams, precast slabs, precast columns, and precast stairs used in general industrial and civil buildings. Main technical contents: Foreword 1 Scope 2 Normative reference documents 3 Terms and definitions 4 Classification and marking 4.1 Classification and codes 4.2 Marking 5 Materials 5.1 Rebar 5.2 Cement 5.3 Sand 5.4 Stone 5.5 Additives 5.6 Admixtures 5.7 Water for mixing 5.8 Pre-embedded metal hangers 5.9 Grouting sleeves 6 Requirements 6.1 Visual quality 6.2 Dimensional deviations 6.3 Concrete strength grade 6.4 Number, specification, spacing, row spacing, and protection layer thickness of main reinforcing bars 6.5 Maximum chloride ion content in hardened concrete 6.6 Structural performance 7 Test methods 7.1 Visual quality 7.2 Dimensional deviations 7.3 Concrete strength grade 7.4 Number, specification, spacing, row spacing, and protection layer thickness of main reinforcing bars 7.5 Maximum chloride ion content in hardened concrete 7.6 Structural performance 8 Inspection rules 8.1 Factory inspection 8.2 Type inspection 9 Product marking and accompanying documents 9.1 Product marking 9.2 Product accompanying documents 10 Lifting, storage, and transportation 10.1 Lifting 10.2 Storage 10.3 Appendix A (Normative) Reference method for testing the structural performance of precast components References