The Effects of Higher Strength and Associated Concrete Properties on Pavement Perform

[Dell_Brett]

The Effects of Higher Strength and Associated Concrete Properties on Pavement Performance

This report documents the investigation of the effect of strength and other associated concrete properties of the long-term performance of concrete pavements. Performance criteria used included joint spalling, faulting and transverse slab cracking. Project variables included pavement age, traffic, climate, distress levels and types, joint spacing and compressive strength. Compressive strength was found to correlate well with permeability. Concrete characteristics found to be desirable include compressive strength in the 45 to 50 MPa range, flexural strength in the 4.5 to 6.0 range, non-alakali reactive aggregate that is freeze-thaw distress resistant, a well- graded aggregate with large top size, water-cement ratio of 0.42 to 0.45 and cement content of approximately 335 kg/m3.
Prototype mixture designs were developed for different climatic regions. This report will be of interest to those involved in concrete pavement mixture design, as well as those involved in the design, construction and analysis of concrete pavements.
Sufficient copies are being distributed to provide 10 copies to each FHWA Resource Center, five copies to each FHWA Division, and five copies to each State highway agency. Direct distribution is being made to the FHWA Division Offices. Additional copies may be purchased from the National Technical Information Service (NTIS), 5285 Port Royal Road, Springfield, Virginia 22161.

Code:

***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************