Polycarboxylate ether powder R-309 is the final product with advanced technology, which can be used as concrete pumping aid directly without air container, sodium gluconate. This product is developed recently with amazing peroformance, according to the feedback of esteemed customer, this product is analogue of BASF MELFLUX product.
Technical Specification
Item
Index
Appearance
White to yellow powder
Bulk denisty(g/l)
600±50
Ph value(20% water solution)
9.0±1.0
Water content(%)
≤3
Ignition loss(%)
≥86
Chloride content(%)
≤0.1
Test item
Unit
Specification
Water reducing rate
%
≥25
Bleeding rate
%
≤60
Air content
%
≤6.0
Slump retention(1 hour)
Mm
≤30
Ratio of compressive strength
1d
%
≥170
3d
≥160
7d
≥150
28d
≥140
Ratio of Shrinkage
28d
≤110
Difference in setting time
Initial setting time
min
-90~+120
Final setting time
Number of cycles of resistance to freezing and thawing
Time
≥200
Internal control index:gb8076-2008 jc/t223-2007
Recommended Mixing Amount
The recommended range of dosage in various powder materials shall be accounted of 0.2-0.3% of cementitious material.
