GB/T 8076-2025 English PDF - Concrete Admixture Standards

Standard Catalog

The standard consists of the following main sections:

• Foreword

• Introduction

• 1 Scope

• 2 Normative References

• 3 Terms and Definitions

• 4 Classification, Designation and Marking

• 4.1 Classification and Designation

• 4.2 Marking

• 5 Technical Requirements

• 5.1 Physical and Chemical Properties

• 5.2 Properties of Tested Concrete

• 6 Test Methods

• 6.1 Test Conditions

• 6.2 Test Materials and Samples

• 6.3 Concrete Mix Proportion

• 6.4 Concrete Mixing

• 6.5 Preparation, Curing and Sample Quantity of Concrete Test Specimens

• 6.6 Chloride Ion Content

• 6.7 Released Ammonia Content

• 6.8 Residual Formaldehyde Content

• 6.9 Solids Content, Density, Moisture Content, Fineness, Alkali Content, Sodium Sulfate Content and pH Value

• 6.10 Water Reducing Rate

• 6.11 Bleeding Rate Ratio

• 6.12 Air Content and 1-hour Air Content Variation

• 6.13 Setting Time Difference

• 6.14 Slump and 1-hour Slump Variation

• 6.15 Compressive Strength Ratio

• 6.16 Shrinkage Rate Ratio

• 6.17 Frost Resistance Index

• 6.18 Pressure Bleeding Rate Ratio

• 6.19 Soundness

• 6.20 Penetration Height Ratio

• 6.21 Water Absorption Ratio (48h)

• 6.22 Compressive Strength Ratio at Negative Temperature

• 6.23 Shrinkage Rate Ratio at Negative Temperature

• 6.24 Penetration Height Ratio at Negative Temperature

• 6.25 Strength Loss Rate Ratio after 50 Freeze-thaw Cycles

• 7 Inspection Rules

• 7.1 Batch Number

• 7.2 Sampling

• 7.3 Classification of Inspection

• 7.4 Acceptance Rules

• 8 Product Manual, Packaging, Delivery, Transportation and Storage

• 8.1 Product Manual

• 8.2 Packaging

• 8.3 Delivery

• 8.4 Transportation and Storage

• Appendix A (Normative) Technical Requirements for Reference Cement Used in Performance Test of Concrete Admixtures

• A.1 General Provisions

• A.2 Quality Indicators

• A.3 Test Methods

• A.4 Inspection Rules

• A.5 Packaging, Transportation and Storage

• Appendix B (Normative) Technical Requirements for Special Manufactured Sand Used in Performance Test of Concrete Admixtures

• B.1 General Provisions

• B.2 Quality Indicators

• B.3 Test Methods

• B.4 Inspection Rules

• B.5 Packaging, Transportation and Storage

• Appendix C (Informative) Information on Concrete Admixtures

• C.1 Types and Characteristics of Admixtures

• C.2 Main Functions of Admixtures

• C.3 Main Factors Affecting Compatibility between Cement and Admixtures

• C.4 Dosage of Admixtures

• C.5 Notes on Application of Admixtures