A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The report presents the findings of a six-year study to relate subgrade moisture variations to soil, climate, and pavement conditions, and to suggest design recommendations for improving Oklahoma pavement performance. Subgrade moisture contents tended to increase to approximately 1.1 to 1.3 times the P.L. Seasonal variations were more pronounced under pervious pavements. Problems occurred mainly in fill and transition sections because of the exposure at the shoulders. Loss of subgrade support and excessive pavement deflections and cracking were the most apparent results of the increased moisture content. Vertical heave over the expansive clay was relatively insignificant, but the lateral subgrade expansion, up to five inches, caused pavement cracking and led to rapid pavement deterioration. To minimize subgrade moisture variations, the design should include impervious pavements with eight-foot paved shoulders on each side of the riding surface. It should also require good surface drainage in the median as well as along the outside of the pavement. (Author)
The report presents the findings of a six-year study to relate subgrade moisture variations to soil, climate, and pavement conditions, and to suggest design recommendations for improving Oklahoma pavement performance. Subgrade moisture contents tended to increase to approximately 1.1 to 1.3 times the P.L. Seasonal variations were more pronounced under pervious pavements. Problems occurred mainly in fill and transition sections because of the exposure at the shoulders. Loss of subgrade support and excessive pavement deflections and cracking were the most apparent results of the increased moisture content. Vertical heave over the expansive clay was relatively insignificant, but the lateral subgrade expansion, up to five inches, caused pavement cracking and led to rapid pavement deterioration. To minimize subgrade moisture variations, the design should include impervious pavements with eight-foot paved shoulders on each side of the riding surface. It should also require good surface drainage in the median as well as along the outside of the pavement. (Author)
Subgrade Moisture Variations
T. A. Haliburton (author)
1970
97 pages
Report
No indication
English
Civil Engineering , Pavement bases , Moisture , Design , Deflection , Cracks , Drainage , Clays , Soil tests , Deterioration , Highways , Construction , Maintenance , Oklahoma
Nondestructive measurement of subgrade moisture variations
| Engineering Index Backfile | 1968
Subgrade Moisture Variations. Summary of Collected Data
| NTIS | 1970