WINFLOW-SR
AE high range water reducer (Retarders Type) KSF 2560
AE high range water reducers (retarders) are chemicals that use naphthalene / lignin as the main ingredients and delay the initial setting of concrete. It decreases the unit quantity of concrete by the dispersion and air-entrainment of cement and without affecting the workability and the long-term strength. In addition, it reduces cost by decrease the rate of hydration of the cement, thus extending setting time and preventing cracks.
● USAGE
* Ready mix concrete plant or Batch plant field
* Hot weather concrete
* Dam concrete and Mass Concrete
* Long-distance transport and fields where concrete casting is delayed
* General types of construction and civil engineering structures in hot weather,
● DOSAGE
* Typical ratios of 0.3% to 0.7% by weight of cement are suggested. Please test concrete to make sure each batch meets the exact specification on site.
* General types of construction and civil engineering structures in hot weather,
* Excessive cement in concrete can be harmful.
● ADVANTAGES
* The amount of cement is reduced due to the excellent cement dispersion.
* Increased compressive strength due to high water reducing ratio of 13%~18%
* Reduction in drying shrinkage and cracking due to the suppression of heat of hydration
* Delay of the initial setting time (by 1-2 hours compared to regular concrete)
* Delay of transport time in summer and time required for the concrete to be compacted
● PROPERTIES
* Appearance : Dark brown liquid
* Specific gravity : 1.200±0.05 (20℃)
* pH : 7.0±3.0
* It can be used in parallel with other admixtures, but it is generally used separately in accordance with on-site testing.
● Packing
* 250kg/drum, 1TON/drum, Tank Lorry
MixingDesign
Class | Gravel
Size(mm) | W/C(%) | S/A(%) | Unit weight (kg/㎥) |
W | C | S | G | AD |
PLAIN | 25 | 65.0 | 48.0 | 195 | 300 | 873 | 953 | |
WINFLOW-SR | 25 | 55.0 | 47.0 | 165 | 300 | 855 | 972 | 1.5 |
WINFLOW-SR | 25 | 53.3 | 47.0 | 160 | 300 | 861 | 979 | 2.1 |
TestResults
Test Item | KSF2560 | PLAIN | WINFLOW-SR |
Admixture dosage (%) | - | - | 0.5 | 0.7 |
Air Content (%) | Plain(+3.0±0.5) | 1.6 | 4.2 | 4.8 |
Slump(㎜) | 80±10 | 80 | 80 | 80 |
Water Reduction (%) | 10≤ | - | 15.4 | 17.9 |
Bleeding(%) | 70≥ | 100 | 61.0 | 57.0 |
Setting Time
(Hr : Min) | Initial | +60 ~ +210 | 0 | +90 | +110 |
Final | +210 ≥ | 0 | +95 | +115 |
Compressive strength ratio (%) | 3Day | 105≤ | 100 | 118 | 121 |
7Day | 110≤ | 100 | 123 | 128 |
28Day | 110≤ | 100 | 128 | 132 |
Elongation (%) | 120≥ | - | 102 | 103 |
Relative dynamic modulus of elasticity (%) | 80≤ | - | 97.5 | 97.1 |
※ Length change test : Water curing for 7 days (20±2℃) and moist curing for 6 months (Temperature 20±2℃, Humidity 60±5%)
※ Freeze-Thaw Resistance test : Specimen Temp. (4℃ → -18℃, -18℃ → 4℃) 200 cycles