GK-4A is manufactured by compounding set retarding agent,plastic retaining agent and diversified surfactant, which the main material is naphthalene high performance water reducing agent. It possesses the merits of high water reducing rate ,super plastic features and so on, which is applicable for mass concrete,crushed concrete and hot weather construction with special requirements for the condense time of concrete.

Technical performance

1,Powder addition dosage is 0.7-1.5%,liquid addition dosage is 2-3%,water reducing rate is above 12%.

2,It can delay the condense time 8-10hour,if the temperature of concrete with added dosage is 30°C.

3,The concretes’ harden strength can advance obviously after mixing GK-4A:7d is above 130%,28d is above 120%.

4,It can postpone the speed of watering and hardening after blending the GK-4A,lower the watered heat dissipation, decrease the temperature stress, which can avoid from concretes’ crack effectively.

5,It will improve the concretes’ workability,impermeability and anti-freezing ability effectively after mixing the GK-4A.

6,It is1,.

Applicable key point

1,Powder agent and cement are blended into mixer simultaneously and prolong the stirring time 30-60s.

2,Be better to make an applicable testing experiment for gypsum and setting control cement of industrial waste materials. use it after qualified.

3,When make use of the GK-4A,it should be calculated precisely, rigidly controlling the addition dosage.

Package and storage

1,It is packaged in liner plastic woven sack,25kg per bag.

2,Strored in shadow and dry warehouse, avoiding from humid.

3,The shelf life is two years, also it can be used after the qualified test experiment for overdue concrete.