Full-depth reclamation : new test procedures and recommended updates to specifications.
-
2012-07-01
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Edition:Technical report; Sept. 2010¿Mar. 2011.
-
Corporate Publisher:
-
NTL Classification:NTL-HIGHWAY/ROAD TRANSPORTATION-MaterialsNTL-HIGHWAY/ROAD TRANSPORTATION-Construction and MaintenanceNTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and Performance
-
Abstract:Rehabilitating an old pavement by pulverizing and stabilizing the existing pavement is a process referred to
as Full Depth Reclamation (FDR). The stabilized layer becomes either the base or sub-base of the new
pavement structure. This process has been used widely for over 20 years in Texas to strengthen and widen
structurally inadequate pavement sections. This project developed guidelines on successful FDR practices,
developed training materials, and identified areas where improvements to current practices are required. To
improve the FDR process, this report includes the following enhancements: Current laboratory testing to select the optimal type and amount of stabilizer takes too long and
requires too much material. Continue to run parallel testing with the small sample test protocols
proposed in this report; Use the falling weight deflectometer (FWD) during construction to validate that the design
assumptions are being met; Implement the proposed bond test to select the optimum prime material and amount needed to
effectively bond the base to the surfacing materials;
Modify the specifications to avoid working in freezing conditions; Consider implementing the other modifications to specifications proposed in this report.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
File Type:
Supporting Files
-
No Additional Files
More +