×
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!
  • Students Click Here

*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.

Students Click Here

Jobs

7-day Flexural Strength to Determine 7-day Tensile Strength

7-day Flexural Strength to Determine 7-day Tensile Strength

7-day Flexural Strength to Determine 7-day Tensile Strength

(OP)
I using UFC 3-260-02 Pavement Design For Airfields, 30 June 2001 to Calculate the percentage of reinforcing steel required in the longitudinal direction.

One of the parameters is f(subt) = 7-day tensile strength of the concrete in psi determined using the splitting tensile test.  This reference has a Figure 5-1 to convert the 7-day flexural strenght into tensile strenght.

Can you guys give me advice or point me to a reference in calculating the 7-day flexural strength for 3,000 psi, 4,000 and 5,000 psi so that I can find the 7-day tensile strength form this Figuere.

Thanks

 

RE: 7-day Flexural Strength to Determine 7-day Tensile Strength

Beams are made of the paving mix and stored for three point loading results.  The compressive strength has an assumed correlation to flexural strength, ACI 318 9.5.2.3, fr = 7.5 x SQ Root (F'c).

RE: 7-day Flexural Strength to Determine 7-day Tensile Strength

(OP)
Is the Modulus of Rupture fr the same thing as flexure strength?

Do you know how would I determine the 7-day flexural strength?

THANKS   

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