Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Super-P in highrise concrete

Status
Not open for further replies.

WHH47

Specifier/Regulator
Joined
Nov 6, 2007
Messages
9
Location
US
I posted similar thread at Stuctural Engineering other topics site, thread507-202506.
If ACI doesn't has any super-p requirements, do you kow any rule of thumb from concrete engineering points of view?
So far all I found out is to use super-p on 10,000psi or higher strength, on shearwall and/or columns with pump mix(pearock).
Remaining highrise concrete can be regular mix pumped to place for elevated slab without super-p or pump mix
Any advice?
 
After 25+ years working for ready mix concrete producers, I would prefer to see all pumped concrete with a high range
water reducer( super p ). Depending on the length of line you are pumping through, the mix can easily lose 2 - 3 inches of slump. With lightweight concrete, this loss is even higher. The admixture manufacturers have refined their product so much over the years that you can fairly easily dial in the slump you require without sacrificing strength through the addition of water.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top