Application of laser particle size analyzer in low heat cement

The particle size of low-heat cement has a crucial impact on its application, which is reflected in the following aspects:

1. Heat of hydration

Effect of small particle size: When the particle size of low-heat cement is small, its specific surface area is relatively large. This means that during the hydration reaction, the contact area between cement particles and water increases, and the hydration reaction can proceed more quickly. Therefore, low-heat cement with small particle size will release more heat during early hydration, and the hydration heat peak appears relatively early. Although from the perspective of reducing the heat of hydration, excessive early hydration heat is not an ideal state, but in some projects that have certain requirements for early strength, smaller particle sizes can make the cement exert its strength faster and meet the construction schedule requirements in the early stage of the project.

2. Strength development

Advantage of small particle size: Smaller particle size low-heat cement particles can quickly react with water in the early stage of hydration to generate a large amount of hydration products, filling the pore structure of the cement stone, making the cement stone have a higher density in the early stage, thereby obtaining higher early strength. This is of great significance for some projects that require rapid demoulding and rapid construction, such as prefabricated component production and road repair projects. In these projects, the rapid increase in early strength can speed up the project progress and improve production efficiency.

3. Durability

Advantages of large particle size: The hydration reaction of large particle size low-heat cement is relatively slow and continues for a long time, making the structure of the cement stone more dense. This dense structure can effectively block the intrusion of external corrosive media (such as chloride ions, sulfate ions, etc.), improve the chemical resistance of concrete, and enhance the durability of the concrete structure. Therefore, in some projects under harsh environmental conditions, such as marine projects and projects in saline soil areas, large-grained low-heat cement is more conducive to ensuring the long-term stability and safety of concrete structures. In summary, the particle size of low-heat cement has a particularly important impact on its application. This time, Winner3003 is recommended for customers to measure low-heat cement particle size.

Measuring instrument information is as follows:

The video of measuring nanoparticles is as follows：