Concrete composite containing silicon micro powder and preparation method thereof

Abstract

The invention discloses a concrete composite containing silicon micro powder and a preparation method thereof. The concrete composite is mixed and prepared from gelled material, additive, coarse aggregate, fine aggregate and water, wherein the dosage range of the gelled material in the concrete is 250 kg / m3-700 kg / m3, the gelled material contains 10 kg / m3-200 kg / m3 of silicon micro powder, and the balance is the admixture of cement and mineral. By using the concrete composite and the preparation method, concrete hydration temperature rise can be obviously reduced, the possibility of concrete cracking is reduced and the durability of concrete is effectively improved. The concrete composite and the preparation method can be prepared into concrete suitable for various purposes.

Description

Technical field: [0001] The invention relates to a high-performance building material and a preparation method thereof. Background technique: [0002] Concrete is the most widely used building material in modern times, and it is also the largest man-made material at present. Compared with other commonly used building materials, cement concrete not only has the advantages of low production energy consumption, wide source of raw materials, simple process, and low production cost, but also has the characteristics of durability, fire prevention, strong applicability, and convenient application. Therefore, for a long time to come, cement concrete will still be the most widely used and used building material. With the development of concrete technology, people realize that mineral admixtures play an important role in improving concrete workability, improving concrete durability, reducing cement consumption, and reducing environmental pollution. Mineral admixtures have become indi...

AI Technical Summary

Problems solved by technology

For example, metakaolin and silica fume have good reinforcement effects, but the price is high. Metakaolin needs to be calcined and ground, which consumes a lot of energy. Silica fume will increase the shrinkage of concrete. For concrete mixed with finely ground slag, the amount of ground slag is less than 70% %, the concrete hydration temperature rise is higher, but too high content will increase the concrete bleeding, and the concrete mixed with fly ash can reduce the temperature rise, but the early strength is low

However, there are a large number of quartz ores in my country with relatively low grades, and it is difficult to produce high-purity silica powder. How to use this part of low-purity silica powder is also a difficult problem in the silica powder production industry.