Description

MNC-HHJ Superplasticizer ASTM C **4, Type G Water Reducing, High Range and Retarding Admixtures Description MNC-HHJ is a water reducing, high range and retarding admixture which delays concrete setting time. It not only plasticizes significantly but also has little or no effect on the water demand or other properties of concrete. It complies with ASTM C **4 Type G, GB********7 and GB*********3. Application MNC-HHJ retards the initial and final set of concrete. It extends the initial setting time of portland cement concrete by 2 to 3 hours at *1 ℃. MNC-HHJ is used wherever a delay is needed in setting time to insure sufficient delivery, placement, vibration or compaction time.  Not suitable for working condition under 5℃.  Not suitable for being solely applied in the concrete that requires early strength and steam curing.  Not suitable for being solely used in the lean concrete.  Test before applied in anhydrite, dross or similar industrial waste cement. Advantages  Delays the setting time of concrete  Prevents the formation of cold joints  Increases initial workability  Increases ultimate strength  Produces economies in mix designs  Provides workability retention to the concrete Test Data Sheet Items Criteria Test Results Water Reducing Rate (%) ≥*2 *4.3 Ratio of Bleeding Rate (%) ≤**0 *2.7 Air Content (%) ï&frac*4;œ4.5 2.4 Setting Time Difference, (min) Initial ï&frac*4;ž**0 ***0 Compressive Strength Ratio (%) 3 day ≥**5 **2 7 day ≥**5 **5 *8 day ≥**0 **1 Shrinkage (%) *8 day ≤**5 **9 Alkali Content (%) ****- 2.*5 Alkali Content per m3 (kg) ≤1.0 0.1 Chloride Ion Content (%) ****- 0.*9 Chloride Ion Content per m3(kg) Prestress Concrete ï&frac*4;œ0.*2 0.**4 Reinforced Concrete 0.*2~0.*0 Plain Concrete 0.*0~0.*0 Ammonia Content (%) ≤0.1 0.*0 Radiation Internal Exposure Index IRa ≤1.0 0.*3 External Exposure , Index IY ≤1.0 0.*5 Package and Storage  Packed in woven fabric bag with plastic liner.