Description
JK-15 is naphthalene-based non-corrosive, non-chlorine compound antifreeze admixture which compounded with water-reducing, early-strength, reducing the freezing point, preventing freezing damage etc. ingredients, powder, it has early-strength, water-reducing, air-entraining, anticorrosion etc. functions. It is mixed to the concrete according to the request, can obviously improve the configuration of the capillary pores and reduce free-water and the freezing point of the concrete effectively. And it can accelerate cement hydration and concrete hardening under the low temperature condition, enhance the early strength greatly and make the strong more and more by time, is ideal admixture for construction in winter.
Uses
JK-15 is suitable for the winter construction (in ambient temperatures ranging from -5 centigrade degree to -20 centigrade degree) of common concrete, pumping concrete, large volume concrete and ready mixed concrete.
Advantage
1. JK-15 is a new generation of high efficient anti-freezing admixture. Small dosage, completely water soluble, low alkali, apparent reducing effect on the alkali-aggregate reaction. It can improve the workability, pumping properties and early strength of the concrete.
2. JK-15 is suitable for concrete and precast below C50 but also the concrete above C50 with a addition of our high range water reducing admixture.
Specifications
|
Item
|
Norm
|
Item
|
Norm
|
|
Appearance
|
Lark powder
|
Fluidity of cement
|
120-160mm
|
|
Moisture
|
≤10%
|
Chlorine content
|
Non
|
|
PH value
|
7-9
|
Alkali content %
|
2.2
|
Technical Data Sheet
|
Item
|
JK-15 C10
|
JK-15 C15
|
JK-15 C20
|
|
|
Dosage
|
2.0%
|
3.0%
|
4.0%
|
|
|
Lowest Daily Temperature
|
-5 ℃degree
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-10 ℃degree
|
-15 ℃degree
|
|
|
Setting Time Difference (min)
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Initial
|
-60～+120
|
||
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Final
|
||||
|
Compressive Strength (Mpa)
|
1 day
|
8
|
2
|
1
|
|
3 days
|
25
|
20
|
10
|
|
|
7 days
|
40
|
30
|
15
|
|
|
28 days
|
60
|
50
|
40
|
|
|
Shrinkage (%)
|
28 days
|
≤120
|
||
|
Steel-bar Corrosion
|
None
|
|||
Cautious
1. After the pouring construction covers the surface using the plastic sheeting and the grass curtain, do not let it to freeze immediately or blow the winds excessively caused the crack. Entering the mold temperature control above 5 ℃ degree.
2. Required heating curing at the early strength fast-enhancement. After the concrete formed, if the surface iced up, this phenomenon does not cause any the freezing damage. The intensity will remain enhancing rapidly, when the ambient temperature increasing.
Package, Storage & Shelf Life
For powder: Woven plastic bag with film liner. Net weight: 25kg +/- 0.2 kg.
It should be stored in a dedicated warehouse that is well-ventilated and dry and keep away from moisture.
Shelf Life: Minimum 12 months. After the expiration date, it can be used if testing results is qualified.