Polycarboxylic High Efficiency Retarding &
Water-reducing Admixture
Product Description
PC-6A is a new type Superplasticizer developed primarily for use in hot climate area. It contains polycarboxylate ether polymers as well as performs outstanding high water reduction and significantly reduces slump loss.
With the design for the need to improve the initial compression strength and ultimate compression strength，PC-6A is applying as follows :
l Concrete which contain less water content than conventional additive
l The concrete which must fast mixing logistics during large project
l High flowability concrete
l Highly durable concrete
l Ready-mixed concrete
l Mass concrete
l Long distance transport concrete
l Pumped concrete
l Hot weather pouring concrete
l Self compacted concrete
Main Properties and Characteristics
High water-reducing performance High initial and ultimate strength.
Low permeability, high durability concrete.
High flowability Ease of placing and compaction.
No separation.
Superior compression performance No retempering. Ease of point construction
Low shrinkage and creep Improves dimensional stability. Reduces risk of cracks.
Good cohesion Ease of pumping. No bleeding.
Good workability Excellent appearance. Self compacted concrete.
Minimal water-bleeding It is significantly less than BNS based products.
Excellent concrete quality.
High elastic modulus Superior load bearing capacity.
Standards
PC-6A is free of chloride and has been formulated to comply with ASTM C494 for Type A&F admixtures, BS5075 for high range water-reducing admixtures and JIA A6204 concrete. Also, PC-6A is complying with BSEN 934-2 Tables 3.1 & Tables 3.2，Chinese state Standard GB- 8076-97 and Chinese Construct Standards JG/T 223-2007.It is compatible with all Portland cements that meet recognized international standards.
Typical performance
PC-6A improves initial and ultimate strength. It also improves superior compression performance
and workability of the concrete more than traditional superplasticizer. High water-reducing rate lead to save cement quantity more than 25%-40% in the concrete project.
Properties and Adding
Supply form: Liquid
Color: Yellowish color
Specific Gravity: 1.1-1.11kg/ltr@25℃
PH: 6.0-8.0
Solid Content: 50%
Chloride content: <0.1%
Compatibility
Do not use other water reducing materials and /or superplasticizer in the mix with PC-6A
Application Adding Method
PC-6A can be added into the mixing water or to the wet concrete after the mixing water has been added. The time of adding PC-6A to the dry concrete mix is not less than 100 seconds. A separate dispenser and feed line must be used in order to make the concrete reach the best property and the most water-reducing effect.
Dosage
In order to meet specific requirements, PC-6A addition rate should be determined according to the materials and the conditions of the experiments and the water-reducing request. The scope of the PC-6A addition rate is from 0.2 liter to 1.5 liter/100 kg cement materials.
Other dosages may also depend on the specific working conditions.
If over dosed, it will lead to delay the coagulating time.
Packaging
PC-6A is available in 200 liter/ drum or1000 liter/drum.
Shelf life
PC-6A can be stored for 12 months if temperature is 2℃-50℃, in sealed original drums.
If appear frozen, thaw it and reconstitute by stirring before use.
Precautions
Health: PC-6A does not contain any hazardous substances requiring labeling.
It is safe for use with standard precautions followed in the construction industry, such as
use of hand gloves, safety goggles, etc.
PC-6A is water-based product and noncombustible. No corrosion to steel.