Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs

Behnood, Ali; Olek, Jan

doi:10.5703/1288284317128

i

Development of Subgrade Stabilization and Slab Undersealing Solutions for PCC Pavements Restoration and Repairs

2020-04-01
By Behnood, Ali ; Olek, Jan

File Language:

English

Details

Creators:

Behnood, Ali ; Olek, Jan
Corporate Creators:

Purdue University. Joint Transportation Research Program
Corporate Contributors:

Indiana. Dept. of Transportation ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/IN/JTRP-2020/13
DOI:

https://doi.org/10.5703/1288284317128
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

Purdue University. Joint Transportation Research Program
Description:

The loss of functionality and the development of distress in concrete pavements is often attributable to the poor subbase and subgrade conditions and/or loss of support due to the development of the voids underneath the slab. Subgrade soil stabilization can be used as an effective approach to restore the functionality of the subgrades in patching projects. This research had two main objectives: (1) identifying the best practices for soil stabilization of the existing subgrade during pavement patching operations and (2) identifying and developing new, modified grouting materials for slab stabilization and undersealing. Various stabilization scenarios were tested and showed improved performance of the subgrade layer. The use of geotextile along with aggregate course was found to significantly reduce the settlement. Non-removable flowable fill was also found to significantly reduce the subgrade settlement. Cement-treated aggregate and lean concrete provided the best performance, as they prevented formation of any noticeable settlement in the underlying subgrade.
Format:

PDF
Funding:

SPR-4004
Download URL:

https://rosap.ntl.bts.gov/view/dot/55855/dot_55855_DS1.pdf
File Type:

[PDF - 6.32 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:da432f60eda97eaa74d082dfe9d12461da5397f5798f3524cfcf1a15de896e6a

File Language:

English

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