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https://hdl.handle.net/11681/20734| Title: | Strengthening of keyed longitudinal construction joints in rigid pavements |
| Authors: | United States. Federal Aviation Administration. Air Force Weapons Laboratory. Grau, Robert W. (Robert Walter) |
| Keywords: | Construction joints Pavements Runway pavements Rigid pavements Multiple-Wheel Heavy Gear Loads MWHGL Concrete construction Traffic tests |
| Publisher: | Soils and Pavements Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Description: | Miscellaneous Paper Abstract: The rigid pavement test section was constructed of portland cement concrete (PCC) and trafficked with a 360-kip 12-wheel assembly and a 166-kip twin-tandem assembly to evaluate the performance of keyed and doweled longitudinal construction joints in rigid airfield pavement under multiple-wheel heavy gear loadings (MWHGL) and to investigate the feasibility of strengthening existing keyed longitudinal joints. The findings from this investigation are as follows: (1.) The performance of keyed joints of rigid pavements on medium-strength (k = 200 - 400 pci) foundations was marginal; (2.) it is feasible to strengthen the keyed joints in existing rigid pavements that are founded on low- to medium-strength (k < 400 pci) materials and are in good condition if the airfield is scheduled for MWHGL aircraft traffic; (3.) keyed longitudinal construction joints in existing rigid pavements constructed on high-strength (k > 400 pci) or stabilized soil foundations will probably perform satisfactorily under MWHGL aircraft traffic; (4.) a sand-filter course beneath a pavement structure will be effective in minimizing subgrade pumping; (5.) a 6-in.-thick stabilized base course placed over a low-strength (k < 200 pci) subgrade is very effective in increasing the load-carrying capacity of a 10-in.-thick nonreinforced PCC pavement; and (6.) doweled longitudinal construction joints in rigid pavements constructed on low-, medium-, and high-strength subgrades (k < 200 to > 400 pci) performed satisfactorily under MWHGL traffic. NOTE: This file is very large. Allow your browser several minutes to download the file. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/20734 |
| Appears in Collections: | Miscellaneous Paper |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MP-S-72-43.pdf | 55.22 MB | Adobe PDF |  View/Open |