Polycarboxylic acid water-reducing agent is a kind
of concrete superplasticizer with good comprehensive properties
and good perspective. It is a composite admixture of polycarboxylate
copolymers and other auxiliaries. Compared with other similar products,
this product is better in its performance and performance/cost ratio.
Properties:
1. Low dosage and high range of water reduction
efficiency. Its water reduction efficiency can be up to 45%;
2. High slump-retaining ability. Slump loss of the
concrete is less than 5% in 1h, and less than 10% in 2h.
3. High compressive strengths. It can increase the
compressive strengths of concrete by 50-110% in 3 days, 40-80% in
28 days, 30-60% in 90 days;
4. Excellent workability. High ability against bleeding
or segregation, low resistance and easy for pumping
5. Suitable bubble content, no bad influence on
concrete modulus of elasticity, good freeze resistance;
6. Less than 0.2% alkali content,
7. Nontoxic, no formaldehyde and no pollution;
8. Stable performance, no delamination and no sedimentation
for long storage period, no crystallization in low temperature.
9. High compatibility, compatibly with many cement
types and mineral admixtures, particularly fit for high durability
concrete and self compacting concrete.
Specification:
|
items |
index |
| Appearance |
light brown liquid |
| Density (20℃) g/ml |
1.09±0.02 |
| Solid content % |
22±2 |
| Cement paste fluidity
(cement base) (mm) |
250(W/C=0.29) |
| pH |
6-8 |
| Chloride % ≤ |
0.02 |
| pH value(1% water
solution) |
1.5~2.0 |
| Alkali (Na2O+0.658K2O)(%)
≤ |
0.2 |
Usage methods:
1. The dosage is 0.4-2.0% of the cementitious materials
by weight, normally 0.4-1.2%. Do concrete mixture tests beforehand.
2. No mixture with naphthalene-base water-reducer.
Compatibility tests should be conducted beforehand when mixed with
other auxiliaries.
3. Slump retention is sensitive to water, water
content should be strictly controlled.
4. Concrete cure should be paid attention to.
Scope of applications:
This product is suitable for pumping or normal concrete
engineering of C15-C60, particularly for engineering with high durability,
excellent fluidity, strong slump retention ability and excellent
aesthetic appearance.For high fluidity, self compacting and as cast
finish concrete, this product is a good choice.
Package and Storage:
Liquid, package in barrel, storage for one year
in dry and shady place, avoiding frost.