What is concrete superplasticizer?
Polycarboxylate ether superplasticizer, also known as concrete water reducer, is a new generation of polycarboxylate superplasticizer made of polyoxyethylene ether macromonomer, unsaturated acid, and sulfonic acid group monomer by radical polymerization. The application of Polycarboxylate ether superplasticizer to concrete has high water reduction and low slump loss performance and can be widely used in pumped concrete, superfluid self-compacting, high-strength, high-performance concrete, and commercial concrete.
Technical principle of superplasticizer admixture
Polycarboxylate ether superplasticizer has a comb-shaped structure, with longer polyoxyethylene chains and high-density sulfonic acid groups in the molecule, which makes it have greater steric hindrance and electrostatic repulsion, providing cement with greater dispersion and higher water reduction.
Features of Superplasticizer Admixtures
(1) Superplasticizer admixture has great dispersibility and an extremely high water reduction rate (water reduction rate can reach more than 35%), which provides a guarantee for the preparation of high-grade concrete.
(2) Polycarboxylate superplasticizer is an important concrete admixture; Superplasticizer admixture can effectively reduce the viscosity of concrete, have good cohesion, moderate air content, and be suitable for pumping;
(3) Water-reducing admixtures can make concrete with high strength at all ages, good volume stability, outstanding impermeability, freeze-thaw resistance, corrosion resistance, and carbonization resistance;
(4) Superplasticizer admixtures have wide adaptability to Portland cement, ordinary Portland cement, slag silicate, fly ash cement, pozzolan cement, and various admixtures.
Superplasticizer dosage in concrete
The usual dosage is 0.5%-1.0% (calculated by the total amount of cementitious materials), and the optimum dosage should be determined by experiments according to the engineering materials and characteristics;
The water-reducing agent can be dissolved in water or added to the concrete mixer alone;
It can be used in combination with high plasticity polycarboxylate water reducer, lignosulfonate water reducer, and various retarders.
The company provides a complete set of compounding and use technologies that can train users. If there are any difficult problems, engineers will come to guide you.
Applications of concrete admixture superplasticizer
Early-strength concrete, retarded concrete, precast concrete, cast-in-place concrete, large-flow concrete, self-compacting concrete, mass concrete, high-performance concrete and fair-faced concrete, ready-mixed and cast-in-place in various industrial and civil buildings concrete. Especially suitable for low-grade commercial concrete.
Concrete admixture superplasticizers can be widely used in large and key national projects such as high-speed railways, nuclear power, water conservancy and hydropower engineering, subways, large bridges, expressways, harbors, and wharves.
Concrete admixture superplasticizer is also suitable for various industrial and civil construction and commercial concrete batching plants.
Packaging and Storage of concrete admixture superplasticizer
The liquid of concrete admixture superplasticizer is sealed in 200 kg and 1000 kg barrels.
Anti-leakage, anti-exposure, anti-high temperature during Storage;
The shelf life is one year, and it can only be used after passing the inspection.
