DESCRIPTION:GK-2A represents a water-reducing, early strength enhancing, anti-freezing and air-entraining agent and offers the comprehensive effect of water reduction, early strength enhancement and antifreeze properties. It can improve the capillary structure of concrete, reduce the free water in the concrete, and lower the concrete freezing point. In low temperature condition, it promotes the hydration of cement, so as to improve the concrete early strength, and to meet the requirements of concrete with antifreeze agent. GK-2A is the ideal choice for concrete construction in winter. This product performs according to National Standard JC475-2004 and GB18588-2001 requirements.
USES:GK-2A is widely used in reinforced concrete, pre-stressed concrete and pre-fabricated components for highway, bridge, port, industrial and civil buildings, as well as winter
construction when temperature is no less than -5C.
CHARACTERISTICS:
GK-2A offers the following advantages:
* Water reduction capacity above 15% can be achieved;
* Chloride-free and low alkali content, anti-frost performance and water reduction capacity , and additionally no corrosion of reinforcement.
* Improves workability, as well as durability of concrete.
PRODUCT DATA
Chemical Base | Compound of organic polymer and inorganics |
Appearance/Color | Liquid/Colorless to light yellow Powder/white to light yellow |
Packaging | Powder: 25kg plastic bags, single palette ( 1500kg) Liquid: barrel 225kg, IBC 1100kg or bulk transport |
Storage conditions | Store in dry conditions with the temperature of 0C—35C , protected from direct sunlight, water and frost |
Shelf-life | At least 12 months if stored properly. If expired, it can only be used after inspection. |
Density (at 25C) | 1— 1.2g/cm3 |
pH Value (at 25°C) | 6— 10 (in 20 wt.% aqueous solution) |
Chloride Content | ≤ 0.3% |
APPLICATION
RECOMMEND DOSAGE
Powder: 3%—5% by weight of cementitious materials
Liquid: 2%—6% by weight of cementitious materials
The most effective temperature is from 0C to -20C
USING METHOD:Please mix GK-2A directly into the fresh concrete, or mix it into gauging water first and then add into the dry mixtures. The stir time is suggested to prolong by 30m - 60s.
NOTES ON APPLICATION:
1. It should follow the casting specification.
2. Pay attention to early curing conditions.
3. GK-2A is compatible with all other GK products as following:
- GK water reducer
- GK waterproofing agent
- GK pumping agent.
If combined with the above, it is suggested to determine the performance experimentally or consult our technical services department.
4. If the temperature is lower than - 15C, the amount of antifreeze component should be increased appropriately.
BASIS OF PRODUCT DATA:
All technical data stated in this Technical Data Sheet are based on standard laboratory tests. Actual measured data may vary due to circumstances beyond our control.
LOCAL RESTRICTIONS
Please note that as a result of specific local regulations the declared data for this product may vary from country to country. Please consult the local Technical Data Sheet for the exact product data.
HEALTH AND SAFETY
For information and advice on the safe handling, storage and disposal of chemical products, users should refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety related data.
PROTECTIVE MEASURES
Avoid contact with skin. Please wash immediately with clear water when the product contacts skin and/or eyes. It should timely be taken medical treatment if any allergies and/or other adverse reactions happen.
ECOLOGY/WASTE DISPOSAL
Do not dispose of into water or soil, but according to local regulations.
TRANSPORTATION CLASS
Non-hazardous.
TOXICITY
Non-toxic.
DISCLAIMER
The information, and, in particular, the recommendations relating to the application and end-use of Chang’An Yucai products, are given in good faith based on Chang’An Yucai’s current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Chang’An Yucai’s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product’s suitability for the intended application and purpose. Chang’An Yucai reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Technical Data Sheet for the product concerned, copies of which will be supplied on request.