Forensic Evaluation of the Cement Treated Base Failure on SH 36 in Houston, Texas

Bredenkamp, Sanet; Scullion, Tom

i

Forensic Evaluation of the Cement Treated Base Failure on SH 36 in Houston, Texas

1995-10-01
By Bredenkamp, Sanet ; Scullion, Tom

File Language:

English

Details

Creators:

Bredenkamp, Sanet ; Scullion, Tom
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Transfer Office
Subject/TRT Terms:
Publication/ Report Number:

TX-96/2919-2
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Interim: August 1994 - September 1995
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

The Cement Treated Base (CTB) on SH 36 experienced rapid deterioration after only three years in service. This report presents the field and laboratory studies undertaken to identify the cause of failure. The main cause of the failure was attributed to the process of carbonation where the calcium component from the cement matrix is leached out, resulting in layer disintegration. Contributing factors to this process were: a) the substantial clay contamination of the field sands used which resulted in high suction levels within the CTB, and b) the pavement design which placed CTB's made from different aggregates on top of one another. This resulted in unusual crack patterns which permitted water to be trapped within the base. Recommendations are given on how to avoid this problem in the future, including reducing the allowable PI of the fine materials from 10 to 8. A field carbonation test is also proposed and demonstrated on another project which was experiencing construction problems.
Format:

PDF
Funding:

7-2919
Download URL:

https://rosap.ntl.bts.gov/view/dot/83446/dot_83446_DS1.pdf
File Type:

[PDF - 873.51 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:f483472c09c84ddfe36185f15a79f4a6dc9f3bd6af25fb751eb2b69be10b3b20401447042608e56d11b4e541b4143150d96635de1c442cdef6a724c9e43904b8

File Language:

English

ON THIS PAGE

Details

Found an issue?

Send us an email at:

publishinghd@cdc.gov

ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.