The type and mechanism of the water -reducing agent of the irregular refractory material
Compared with the fired refractory material, the irregular refractory material has the advantages of saving energy, good overall, and flexible adjustment, high production efficiency, and good comprehensive use effects. Therefore, the development is very rapid. During the construction and use process, it is required that the irregular refractory materials, especially the refractory pouring materials and pumping materials, have good liquidity and less water consumption as much as possible. It is applied in the field of irregular refractory materials.
The water reducing agent is a type of substance that can significantly reduce the amount of water for mixing under the condition of maintaining the flow value of the pouring material. The role of water reduction in fire -resistant pouring, especially in low cement and ultra -low cement refractory watering, is very important. It is not only simply reducing the amount of water increase in the construction process, but also on the basis of reducing the amount of water increase, it also obviously optimizes the construction performance of the pouring materials. This article will make a brief summary from the types, mechanisms, research and application status of water -resistant watering materials, and make a brief review of it, and look forward to its development prospects in refractory watering.
The development trend of water reduction agent in irregular refractory materials
At present, the main driving force for the development of irregular refractory materials is ultra -micro powder technology and water reducing agent. To make ultra -micro powder uniformly dispersed, it is necessary to rely on the diversified water reducing agent. Development has a vital role. From ordinary water reducing agents to high -performance water reducing agents, from inorganic salts to high molecular water reduction agents, they have been widely used to the field of irregular refractory materials. Sometimes a single water reducing agent does not meet the requirements of the pouring performance. The improvement of the improvement of the pouring performance by the composite water reducing agent is better than that of a single water reducing agent. However, there are very few research on water -resistant reclaiming technology in the field of fire -resistant materials. Compared with the concrete industry, the reclaiming technology of water reducing agents needs to be further developed.
Although there are many research on the impact of water -reducing agent on the influential refractory material, the research on its mechanism of action only reports the impact of the water reduction agent on the hydration of aluminum cement; There are few reports. The impact of a new generation of combed structured polycarboxyl acid reduction agent on the performance of pouring has been studied in large quantities, but there are few research on its mechanism. Only by strengthening the theoretical research of water -reducing agents and refractory materials can we guide the application of water reduction agents from the high degree of theory.

Superplasticizing water-reducing agent, also known as high-performance water-reducing agent or superplasticizing agent, is an efficient concrete admixture. The following is a detailed introduction to superplasticizing water reducing agents:

1. Product Overview

By optimizing the interaction between concrete particles, superplasticizing water-reducing agents change the surface charge of concrete particles and reduce surface tension, thereby improving the fluidity and water-reducing rate of concrete. It can not only significantly reduce water consumption, but also improve the workability of fresh commercial concrete.

2. Product features

Small dosage, high water reduction rate: The dosage of superplasticizing water reducing agent is usually small, but the water reduction rate can reach 20-35%, which significantly improves the fluidity of concrete.
Slump maintenance: The slump of concrete mixed with superplasticizing water-reducing agent will basically not be lost within 1.5 hours, which is beneficial to concrete construction and quality control.
Significant enhancement effect: The compressive strength of concrete using superplasticizing water-reducing agent is significantly improved after 3 days, 7 days and 28 days. For example, the compressive strength is greater than 145% at 3 days, greater than 142% at 7 days, and 28 Days are greater than 143%.
High plasticizing function: While keeping the water-cement ratio unchanged, the superplasticizing water-reducing agent can increase the slump by more than 15cm, which can meet the needs of pumping concrete with large slump, high-performance concrete above C60, and high-performance offshore engineering. Performance concrete and other preparation needs.
3. Application scope

Superplasticizing superplasticizers are mainly used in concrete projects that require high fluidity, high strength, high durability, and special requirements such as self-leveling, self-compacting, and high-pressure injection, such as bridges, tunnels, high-pressure hydropower stations, high-rise buildings, and large commercial complexes. bodies, airport runways, highways, etc. In addition, it can also be used to manufacture a variety of concrete materials such as high-performance concrete, self-compacting concrete, high-strength concrete, and fluid concrete.

4. Principle of action

Superplasticizing water reducing agent changes the surface properties and interaction of concrete particles and reduces the internal friction and cohesion of concrete, thereby improving the fluidity and working performance of concrete. At the same time, it can also promote the formation of cement gel and efficient active powder reaction, improving the strength and durability of concrete.

In short, superplasticizing water-reducing admixture is an efficient and multifunctional concrete admixture. Its remarkable performance characteristics and wide range of applications make it play an important role in concrete engineering.