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concrete admixture polycarboxylate superplasticizer

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  • Polycarboxylate superplasticizer
    Polycarboxylate superplasticizer is a new generation of environmentally friendly superplasticizer. It is a concentrated product with optimal high water loss, high slump retention, low alkali content, and high strength yield. Can be widely used in ordinary concrete, sandblasted concrete, high strength and durable concrete premix. particular! It can be used for high strength and durability concrete with excellent properties.
  • Progress and development prospects of polycarboxylate superplasticizer polyether macromonomer
    With the development of concrete technology, the requirements for polycarboxylate superplasticizers are more refined, not limited to the basic performance advantages such as water reduction rate and moisture retention. Since the polymerization of polycarboxylate superplasticizer is designable, polycarboxylate water reducing agent with special functions can be prepared according to specific engineering requirements, such as slow release type, early strength type, anti-shrinkage type and low bleed type. , low viscosity type, etc. The main steric hindrance group of the polycarboxylate superplasticizer is the longer polyoxyethylene side chain. The nature of the water-soluble nonionic polyoxyethylene soft segment allows its conformation in aqueous solution to vary. The conformational state of the side chain has a great influence on the water reducing agent.
  • What is a concrete admixture
    Concrete additive is an admixture added during concrete mixing. It is mainly used to improve the performance of concrete. From the point of addition ratio of admixture, it is generally not more than 5%. Although it contains a small amount, it has played an active role in improving the performance of concrete and has become an indispensable part of the current development of concrete. The additives used in concrete mainly refer to different types of water reducing agents. The extensive promotion of concrete admixtures has led to significant improvements in the strength of the concrete, its brittleness and its own weight, and has improved the applicability of concrete construction. For example, adding antifreeze to concrete can make concrete construction work in the cold winter. The use of superplasticizers enables the renewal of concrete placement and flow regimes.
  • Causes and Control Measures of Slump Loss of Concrete Mixed with Superplasticizer
    According to the mechanism analysis of the slump loss of concrete with superplasticizer, it is considered that the following measures can be taken to effectively control: (1) post-mixing method or batch adding method; (2) appropriate increase of water reduction (3) using a carrier fluidizing agent; (4) compounding a certain amount of reactive high molecular material; (5) appropriately compounding the air entraining component; (6) properly compounding the water retaining and plasticizing components (7) Adopt new measures in the synthesis process of high-efficiency water reducer; (8) Appropriately compound the retarding components; (9) Take comprehensive measures.
  • Polycarboxylate superplasticizer
    Polycarboxylate superplasticizer has excellent performance such as high water-reducing rate, small slump loss and no pollution. It is an important component of high-strength and high-flow concrete and high-volume fly ash concrete.
  • Mechanism and application of polycarboxylate superplasticizer
    Polycarboxylate water reducing agent (PCA) is a polymer surfactant prepared by copolymerization of a carboxyl group-containing unsaturated monomer and an unsaturated monomer containing other functional groups. It is a new generation of high-efficiency reduction after naphthalene-based water reducing agent.
  • Application Instruction of Polycarboxylate Superplasticizer Flake
    New solid superplasticizer mother liquor, using one-step synthesis, it is new generation concrete water reducer developed based on the conventional liquid water reducing agent. Its product advantages are: Money saving+Time saving+Avoid problems: no pollutant emissions in use, convenient storage and long shelf life.


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