ZY-309 has a strong activity on cement particles and the new phase surface of hydration products, and adsorbs to the surface of the solid particles so as to delay the formation of concrete and slurry structure. Meanwhile, the product generates an insoluble thin film to barrier the hydration of cement particles, and finally prolongs the coagulation time of concrete.
 

ZY-309 is made to delay the hydration reaction of cement so as to prolong the coagulation time of concrete, keep fresh concrete plastic longer and raise the construction efficiency, without causing bad effects on the various performances of the concrete in later period. The product makes the performance of concrete possible to satisfy all kinds of needs of the building construction. In addition,

ZY-309 can meet the requirement for environmental protection in the future.
With certain water reducing effect, ZY-309 could be applied alone or compounded with water reducers.
 

Typical analysis:
Main ingredient: Saccharides based water soluble mixed solution
Appearance (20 ° C): viscous liquid, medium to dark brown
Solid content (%): 15 ± 1.5
PH（20°C）：7.0～9.0
Specific gravity (20 ° C): 1.02 ~ 1.10
Viscosity (mPa.s): 50 ~ 350
Chloride content (%): <0.05
Alkali content (Na2O): <3.0
 

Dosage: recommendation of additive volume is 0.2%～1.0%. And the optimum dosage could be adjusted according to the design performance of concrete mixture. ZY-309 makes concrete hold effective controlling capacity on slump constant time by adjusting doses strictly.
 

Storage:
Prevent the erosion caused by climate. The storage temperature should be between 5°C ~ 40°C.
Under normal storage conditions, the product should be used within six months after the delivery.