Description of Polycarboxylate-based Superplasticizer Liquid
Polycarboxylate-based Superplasticizer Liquid is the third generation of high performance superplasticizer which is beneficial to improve the workability of concrete admixture, reduce bleeding, and improve the appearance quality and durability of concrete. It is composed of an aqueous copolymer of polycarboxylic acids. When added to concrete, it reduces bleeding and material separation, allowing for a significant reduction in water content by at least 25%.
Advantages of Polycarboxylate-based Superplasticizer Liquid
● Good compatibility. It has good compatibility with various cement, good slump retention performance of concrete, and prolonged concrete construction time.
● High water reduction, low dosage. The water reducing rate can reach 25%-40% with recommended dosage.
● Environmental friendly, no pollution. The production process is non-polluting and contains no formaldehyde, it is a green chemicals.
● Greatly improve early and 28 days strength of concrete.
● High durability. Low chloride ion content and low alkali content are beneficial to the durability of concrete.
● Save cost. More slag or fly ash can be used instead of cement to reduce costs.
● It can be used as mother liquor to formulate other compound admixtures, like early strength type, retarding type, anti-freezing type, etc.
Properties of Polycarboxylate Superplasticizer Liquid
● High water reducing rate.
● High slump retention.
● Low dosage
● Greatly improve early and late strength of concrete.
● Improve workability.
● Good adaptability with different types of cement and admixtures.
● Good stability.
● Good solubility and fast dissolution rate.
Usage and Cautions of Polycarboxylate Superplasticizer Liquid
● Cannot be added together with rosin soup air entrainer.
● Cannot be kept in metal container for too long.
● When mixing and measuring the slump loss, be aware that it takes longer time to be in effect than naphthalene admixtures.
● Do not mix with naphthalene-based admixtures. If other admixtures, such as set retarder or corrosion-inhibiting admixture, are required simultaneously for some special projects, compatibility tests should be conducted beforehand.
Specifications
|
ITEMS |
SPECIFICATIONS |
SPECIFICATIONS |
|
Appearance |
Transparent viscous liquid |
Transparent viscous liquid |
|
Solid Content |
40±0.5% |
50±0.5% |
|
Density(g/ml) |
1.08±0.03 |
1.08±0.03 |
|
PH value |
4-6 |
4-6 |
|
Total Alkali Content |
1.06 |
1.06 |
|
Chloride ion Content |
0.0003 |
0.0003 |
|
Water Reducing Rate |
≥25% |
≥25% |
|
Steel-bar Corrosion |
None |
None |
Dosage
Add in proportion and mix thoroughly. Recommended dosage is 0.2 – 0.5% by weight of binder. Exact dosage rates are dependent on the type of effect sought, quality of cement and aggregates, water/cement ratio and ambient temperature. Therefore, in many cases it is advisable to carry out trial mixes.
Package, Storage & Shelf Life
For powder: Liquid packed in 1.1 ton IBC tank and flexitank.
It should be stored in a dedicated warehouse that is well-ventilated and dry and keep away from moisture.
Shelf Life: Minimum 12 months. After the expiration date, it can be used if testing results is qualified.
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