Our design mix slump is 120 +/- 25mm.
Our client asking to show the slump at Pumping point.
We are pumping the concrete to 15th floor.
If i am showing slump at pumping point, I am getting around 50 to 60 mm only at pouring area due to pipe friction etc.
It is very difficult for workers to pull the concrete and for this we are facing honeycomb problem also.
If i am keeping slump as collapse at pumping point, then i can get around 120 mm slump at pouring point.
Client is arguing that the design mix to be changed other wise, to keep slump 120 +/- 25 at pumping point.
I explained that, while doing Trial mix, we are noticed as collapse at initial observation and the slump 120 +/- after 2 hours only.
My question is where we need to show the slump reading?
It should be at pumping point or pouring point?
Any IS Clarification please.
Thanks.
Vidhyasagar.
Our client asking to show the slump at Pumping point.
We are pumping the concrete to 15th floor.
If i am showing slump at pumping point, I am getting around 50 to 60 mm only at pouring area due to pipe friction etc.
It is very difficult for workers to pull the concrete and for this we are facing honeycomb problem also.
If i am keeping slump as collapse at pumping point, then i can get around 120 mm slump at pouring point.
Client is arguing that the design mix to be changed other wise, to keep slump 120 +/- 25 at pumping point.
I explained that, while doing Trial mix, we are noticed as collapse at initial observation and the slump 120 +/- after 2 hours only.
My question is where we need to show the slump reading?
It should be at pumping point or pouring point?
Any IS Clarification please.
Thanks.
Vidhyasagar.