High range water-reducing and set-retarding admixture (JK-8)

Product Description

JK*8 high range set retarding water-reducing admixture, which is combined of the naphthalene series and the amount of high-performance water-reducing retarder, stabilizer, reinforcing admixture, has a high efficiency water-reducing, retarding in the initial setting and early strength in final setting, late-enhanced, small slump loss etc. it is the perfect concrete admixtures for the preparation of high-performance, high-strength concrete, mass concrete and long-distance transport of concrete. The product can be produced powder and liquid, to meet different engineering requirements.
Homogeneity of Norms:
Item Norm  Item Norm
Appearance Powder  Grey brown Finesse  0.**5mm sieve≤*2%
 Liquid Brown  Fluidity of cement **0mm
Liquid proportion 1.2?0.*2 Chlorine content No
Solid moisture rate ≤*0% Foam-breaking time ≤*0seconds
Ph value  **9  
Principal Technical Performances:
1. Dosage range: Powder dosage amounts to 0.**1.2% of total cementitious material, the liquid dosage amounts to 1.**3% of total cementitious material, reducing-water rate is ****5%.
2. A slight increase in air content is beneficial and without adverse effects on the concrete.
3. The product has the retarding plasticity, small slump loss, which is extremely beneficial to the transport and to pouring of concrete.
4. The product has a retardation **3h, it can also be adjusted for setting time basing on the user's demand. It has not affected the strength growth of concrete.
5. The compressive strength of concrete, flexural, tensile, impermeability and durability are significantly improved and enhanced.
6. the product has the broader applicability of cement, which is the preferred preparation of concrete.
Physical and Mechanical Performance of the Concrete:
Item Factory technical norm National standard (first class)
Water-reducing rate (%) ≥*8 ≥*2
Bleeding rate (%) ≤*0 ≤**0
Air content (%) <3.5 <4.5
Setting