INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Corrosive Environment ACI/NJDOT

Corrosive Environment ACI/NJDOT

(OP)
I am trying to show that corrosion protection is not needed for a foundation design and I am looking for a corrosive environment definition or guidelines according to ACI or NJDOT (the project is is NJ). Soil testing was conducted for resistivity, pH, and chloride and sulfide content. The results were:

resistivity = 7000 ohm-cm at water content = 12%
resistivity = 5900 ohm-cm at water content = 27.6%
pH = 7.1
chloride = < 22 ppm (reporting limit)
sulfide = < 270 ppm (reporting limit)

Based on the corrosion guidelines put out by the California DOT (chloride < 500 ppm; sulfate < 2000 ppm; pH > 5.5), these results indicate a non-corrosive environment. However, since my project is in NJ I am hoping to find a local (NJ) reference or widely accepted guideline (ACI) to support that there is no need for corrosion protection measures for the foundation concrete and reinforcing steel.

I also checked the NACE corrosivity rating which classifies the soil as moderately corrosive based on the resistivity between 5,000 and 10,000 ppm. However, my understanding is that resistivity is used as an indicator for chloride and sulfate so since I have no chloride/sulfide detection, the resistivity is irrelevant.

Any input/resources would be greatly appreciated.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close