What problems will occur when concrete segregates? Yunnan anti-segregation agent manufacturer Guizhou concrete anti-segregation agent is the best

In the process of mixing concrete, you must master the skills, so that you know what kind of mix is ​​more suitable. Next, the editor will introduce to you what problems may occur when concrete segregates.

What problems will occur when concrete segregates?

1. It will weaken the flow performance, and the pump will During delivery, the pump was blocked. 2. There will be large gaps between aggregates, bubbles and honeycombs, etc. 3. It will make it difficult for the concrete to reach the standard strength after hardening, and cracking will also occur.

What should be paid attention to in concrete construction

1. Do not use fine sand for surface mortar

Since the ground will experience various pressures and impacts, it must have better wear resistance and strength. When choosing sand, you should also choose coarse and medium sand. Remember not to choose fine sand, otherwise it will have greater drying shrinkage and be prone to cracking. Fine sand has poor water retention, poor pressure, and sanding problems will occur in the later stages.

2. The curing time must be sufficient

After concrete construction, it must be cured. Yes, usually in about a week. If the time is not long, the concrete will harden slowly and it will be difficult to reach a hardness. It will also be sandy. It may be used with low strength and the opposite layer will be damaged. .

3. Control the water-cement ratio

During construction, the water-cement ratio should also be paid attention to. , cannot be too large, otherwise the surface will be rough and not wear-resistant, which will affect the compactness of the concrete. Do not use cement that is affected by moisture. Not only will the strength decrease, but the cementability will also be poor and sanding will occur.

4. Master the calendering time

Before the concrete solidifies, the time must be controlled well. It cannot be done too early, otherwise it will affect the strength of the mortar. If it is done too late, it will destroy the structure of the cement gel, which will also prevent the strength of the mortar from increasing, and pores or sand will appear on the surface.

Summary: This is the introduction to the problems that may occur when concrete segregates. Generally speaking, the above phenomena will occur, which will also lead to its use. Come with some influence.