Cold weather concrete placing


  #1  
Old 01-26-15, 03:17 PM
S
Member
Thread Starter
Join Date: Dec 2013
Location: usa
Posts: 1,348
Received 1 Like on 1 Post
  #2  
Old 01-26-15, 07:10 PM
BridgeMan45's Avatar
Member
Join Date: Oct 2011
Location: USA
Posts: 3,194
Likes: 0
Received 1 Like on 1 Post
The article makes a blanket statement about adding accelerators, but doesn't go into any detail in describing them. Some accelerators contain a significant amount of calcium chloride, which can cause concrete performance problems, such as increased corrosion of steel reinforcement (rebar and/or wire mesh). A good practice would be to use concrete from a supplier using only accelerators approved by the state DOT, as most have done extensive lab testing of all concrete additives on their approved product lists.
 
  #3  
Old 01-27-15, 04:34 PM
L
Join Date: Feb 2014
Location: USA
Posts: 238
Likes: 0
Received 0 Likes on 0 Posts
When inspecting in our area, if a truck pulled into a job with a bag of Calcium Chloride we made then leave!
 
  #4  
Old 01-28-15, 09:46 AM
S
Member
Thread Starter
Join Date: Dec 2013
Location: usa
Posts: 1,348
Received 1 Like on 1 Post
you're both right of course,,, GaDOT allows CaCl to be added onsite,,, iirc, 1 1/2% flake,,, NYSDOT had allowances for liquid accelerators,,, its not an in-depth article, guys,,, & yes, on public $ jobs, everything came off the dot's approved materials lists
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: