joncle10
Civil/Environmental
- Jan 2, 2016
- 31
Hello,
While casting a retaining wall and because of the heavy traffic, a delay of 2.5 hours between the concrete trucks was noticed.
When the concrete arrived at the site, the slump was taken and found to be 16 cm (a super plasticizer was used - no water has been added to the mix during the travel since one of our workers was next to the driver). Therefore, the engineer agreed to cast the concrete.
Regarding the concrete which has already been casted and located in the formwork, should I worry about any cold joint formation ? the concrete initial setting time is set to 2 to 3 hours.
I have verified the wall reinforcement and found that it was enough to cater for the shear friction through the entire area of the retaining wall.
Any remarks regarding the above or things should I do in case this situation happens again ?
thank you
While casting a retaining wall and because of the heavy traffic, a delay of 2.5 hours between the concrete trucks was noticed.
When the concrete arrived at the site, the slump was taken and found to be 16 cm (a super plasticizer was used - no water has been added to the mix during the travel since one of our workers was next to the driver). Therefore, the engineer agreed to cast the concrete.
Regarding the concrete which has already been casted and located in the formwork, should I worry about any cold joint formation ? the concrete initial setting time is set to 2 to 3 hours.
I have verified the wall reinforcement and found that it was enough to cater for the shear friction through the entire area of the retaining wall.
Any remarks regarding the above or things should I do in case this situation happens again ?
thank you