Detail of GB 50119-2003

Introduction of GB 50119-2003

1.0.1 It is the purpose to work out this code to correctly select and reasonably use various types of additives for concrete, to improve performances of a concrete and help the concrete to reach forecasted effect. 1.0.2 This code is suitable for application of 14 additives in concrete work, including water-reducing additive, high-effective water–reducing additive, air-entraining additive and air-entraining and water-reducing additive, set retarder, set retarding and water-reducing additive, set retarding and high-effective water-reducing additive, hardening accelerating additive and hardening accelerating and water-reducing additive, anti-freezing additive, expanding additive, pumping aid, water repellent, and flashly setting additives. 1.0.3 Preparation and use of a concrete admixed additives shall conform to relevant stipulations in the compulsory clauses in the current national standards in addition to this code.

Contents of GB 50119-2003

Contents 1. General Principle…………………………………………………………………… 2. Basic stipulations…………………………………………………………………… 2.1 Selection of an additive……………………………………………………………… 2.2 Admixed amount of additive………………………………………………………… 2.3 Quality control of an additive………………………………………………………… 3. Water-reducing additive and high-effective water-reducing additive…………… 3.1 Varieties……………………………………………………………………………… 3.2 Applicable scope……………………………………………………………………… 3.3 Construction…………………………………………………………………………… 4. Air entraining additive and air entraining and water-reducing additive………… 4.1 Varieties……………………………………………………………………………… 4.2 Applicable scope……………………………………………………………………… 4.3 Construction………………………………………………………………………… 5. Set retarder, set retarding and water-reducing additive, and set retarding and high-effective water-reducing additive…………………………………………… 5.1 Varieties……………………………………………………………………………… 5.2 Applicable scope…………………………………………………………………… 5.3 Construction………………………………………………………………………… 6. Hardening accelerator and hardening accelerating and water-reducing additive……………………………………………………………………………… 6.1 Varety………………………………………………………………………………… 6.2 Applicable scope……………………………………………………………………… 6.3 Construction………………………………………………………………………… 7． Antifreeze Additives………………………………………………………………… 7.1 Variety………………………………………………………………………………… 7.2 Applied Scope………………………………………………………………………… 7.3 Construction………………………………………………………………………… 7.4 Quality Control for Antifreeze additive-added Concrete…………………………… 8. Expanding additive………………………………………………………………… 8.1 Variety………………………………………………………………………………… 8.2 Applicable scope……………………………………………………………………… 8.3 Requirement for performances of the concrete (mortar) admixed with an expanding additive…………………………………………………………………… 8.4 Design requirement…………………………………………………………………… 8.5 Construction…………………………………………………………………………… 8.6 Inspection of concrete quality………………………………………………………… 9. Pumping aid………………………………………………………………………… 9.1 Varieties……………………………………………………………………………… 9.2 Applicable scope……………………………………………………………………… 9.3 Construction………………………………………………………………………… 10. Water repellent……………………………………………………………………… 10.1 Varieties…………………………………………………………………………… 10.2 Applicable scope…………………………………………………………………… 10.3 Construction………………………………………………………………………… 11. Flashly setting additive……………………………………………………………… 11.1 Varieties…………………………………………………………………………… 11.2 Applicable scope…………………………………………………………………… 11.3 Construction………………………………………………………………………………… Appendix A Test method of adaptability of concrete additive to cement…………… Appendix B Test method of the expansion rate and the dry shrinkage rate of the shrinkage-compensating concrete………………………………………… Appendix C Test method of vertical expansion rate of the expanding mortar for grouting………………………………………………………………… Explanation of Wording in This Standard………………………………………………