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 % |
20±1 |
| 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:
Polycarboxylic acid water-reducing agent 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.
Keywords:
superplasticizer,Concrete superplasticizer
