JK-15 is suitable for the winter construction (in ambient temperatures ranging from -5 degree to -20 degree)

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 °C degree  to -20 °Cdegree) of common concrete, pumping concrete, large volume concrete and ready mixed concrete.

Advantage

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.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 °Cdegree	-10 °Cdegree	-15 °Cdegree
Setting Time Difference (min)		Initial	-60~+120
		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

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 °C degree.

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

Antifreezing Concrete Admixture