How many aspects does the water reducer affect on the rheological properties of concrete?

Water reducer is widely used to improve the mixing performance of concrete, increase the strength of concrete or make high-strength concrete. It is used in different cementing materials with a variety of superplasticizers and various concrete applications. In many cases, it is also used as superplasticizer. Incompatible with cement, it is mainly manifested in low water reducing effect or poor fluidity increase result, too fast setting, slow setting, slump loss, fast or even reduced concrete strength, this kind of superplasticizer and its mechanism of action , Raw material selection and manufacturing process, composition and fineness of cementitious materials, differences in cement grinding stage, environmental temperature and other factors, addition method and admixture dosage will also have an impact.

Dispersion effect: After the cement is mixed with water, due to the hydration of cement particles, cement particles with electric double layer structure are formed to form a solvated water film. The surface of the cement particles with opposite charges makes the cement particles associate and cooperate to form a slurry. The flocculation structure makes 10%-30% of the mixing water wrapped by cement particles, which cannot participate in free flow and lubrication, thus affecting the fluidity of the concrete mixture. When water-reducing agent is added, the water-reducing agent molecules adsorbed on the surface of cement particles can be re-orientated, so that the surface of cement particles (usually negatively charged) is charged with the same charge, forming electrostatic repulsion, which promotes mutual dispersion of cement particles, collapse of the flocculation structure, and release Wrap part of the water,

Lubricity: The water-reducing agent has a strong hydrophilic polarity, so the water-reducing agent adsorption film on the surface of the cement particles can form a stable solvent water film with water molecules. This water film has a good lubricating effect and can effectively reduce the gap between the cement. The sliding resistance to further improve the fluidity of concrete.

Steric hindrance: The hydrophilic branches in the structure of the water reducer extend in the aqueous solution, thereby forming a hydrophilic solid adsorption layer with a certain thickness on the surface of the adsorbed cement particles. When the cement particles are close to each other, the adsorption layer starts to overlap, that is, steric hindrance occurs between the cement particles. The more overlap, the greater the steric hindrance and the greater the obstacle to the cohesion between the cement particles, so that the concrete maintains a good slump.

Overview of polycarboxylic acid water-reducing agent concrete water-reducing agent

Polycarboxylic acid water reducer is a powdery polycarboxylic acid water reducer prepared by a new process. It has excellent comprehensive indicators, good dispersibility, high water reduction rate, good adaptability to various cements, no pollution, and high environmental protection. Performance products.

Application of water-reducing agent concrete water-reducing agent

Water reducing agent is mainly used for ready-mixed dry mortar and unshaped refractory materials, including cement-based non-shrinking self-leveling materials, cement-based non-shrinking grouting materials, pore pressure grouting, emery wear-resistant floors, etc. ; Used for self-compacting concrete with high fluidity.

Polycarboxylate Superplasticizer is a high-performance water-reducing agent and cement dispersant in cement concrete applications. It is widely used in highways, bridges, dams, tunnels, high-rise buildings and other projects.

The product is environmentally friendly, non-flammable, non-explosive, and can be safely transported by trains and cars.

It is suitable for precast and cast-in-place concrete, reinforced concrete and prestressed concrete for high-speed railways, passenger dedicated lines, industrial and civil buildings, roads, bridges, ports, airports and other projects.

It is especially suitable for projects that require a long time for preparing concrete construction and high requirements for maintaining concrete slump, such as nuclear power projects.

Price of water-reducing agent concrete water-reducing agent

The price of polycarboxylic acid water-reducing agent concrete water-reducing agent will vary randomly with factors such as production cost, transportation cost, international situation, and market supply and demand of polycarboxylic acid water-reducing agent concrete water-reducing agent. Tanki New Materials Co.,Ltd. aims to help various industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full set of customized services. If you are looking for polycarboxylate water reducer concrete water reducer, please feel free to send an inquiry to get the latest price of polycarboxylate water reducer concrete water reducer.

Suppliers of polycarboxylic acid water-reducing agent in concrete water-reducing agent

As a global polycarboxylic acid water-reducing agent concrete water-reducing agent supplier, Tanki New Materials Co.,Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineering materials. The company has successfully developed a series of powder materials (including water-based stearic acid emulsion, water-based calcium stearate, zinc stearate, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.

Physical and chemical indicators of polycarboxylate superplasticizer