GK-3A is a powder formulation consisting of aluminum sulfate, sodium carbonate and a set modifying admixture. It can promote the cement fast setting and hardening, which not only results in higher early strength development, but also non affected later strength development of the concrete. It’s an ideal accelerating admixture for shotcrete and mortar.
GK-3A is widely used in shotcrete projects for railway-, highway tunnels and mines, etc.
GK-3A offers the following advantages:
* Low dosage
* Fast setting time
* Low rebound
* Good adaptability
* 24 hour compressive strength development above 7Mpa, additionally 28 days concrete compressive strength ratio above 70% can be achieved.
Formulation of inorganic materials
25kg plastic bags, single palette (1500kg)
Store in dry conditions, protected from direct sunlight, water and frost
At least 6 months if stored properly. If expired, it can only be used
pH Value (at 25°C)
≧ 88% (See CoA for details)
≦15% (passing 75µm)
4%—6% by weight of cementitious materials
Appropriate amount of water reducer, for example GK-3000, should be used in concrete additionally.
NOTES ON APPLICATION
1. Adaptability test for cement to fix the best dosage before using.
2. Control the water to cement ratio strictly among 0.3% - 0.5%, otherwise, it will affect the result.
3. Adjust dosage to improve the accelerating and physical performance of concrete based on the different cement types, usage amount and water to cement ratio.
4. Ambient temperature will affect the setting time and early performance, so that the dosage should be adjusted according to different performance requirement and conditions.
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.
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.
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.
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.