How long does the mixer usually stir the wet-mixed mortar? I stirred for 30s, and the bulk density was 1750. After stirring for 60s, the bulk density

[Alex]

How long does the mixer usually stir the wet-mixed mortar? I stirred for 30s, and the bulk density was 1750. After stirring for 60s, the bulk density was only 1400. How is this going? Who can help me out?

 

[Scott Kaplan]

It is common that the amount of air entraining agent is too much, so reduce the amount of admixture, or replace it.

 

[Roy]

Is the air-entraining agent you use for wet-mixed mortar solid?

Obviously, this is the problem of the dispersibility of the air-entraining agent. We usually stir for 3 minutes, 30 seconds is not uniform enough.

 

[Johnson]

Can't stir for a long time, add water faster, or the density is not enough.

 

[Cassie]

Stirring for 60S, the density becomes larger, proving that the admixture's effect has yet to be brought into play during the first 30S of stirring. You can stir for a few more minutes to see if the density has changed.

 

[Rony]

The specified requirement is not less than 3 minutes, but generally it is still string on the road when the car is running; there will be a stirring effect. Generally, 60s is enough.