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APPLICATION OF DYNAMIC CONE PENETROMETER TO MINNESOTA DEPARTMENT OF TRANSPORTATION PAVEMENT ASSESSMENT PROCEDURES.
| 题名： | APPLICATION OF DYNAMIC CONE PENETROMETER TO MINNESOTA DEPARTMENT OF TRANSPORTATION PAVEMENT ASSESSMENT PROCEDURES. |
| 作者： | Burnham-TR |
| 关键词： | DYNAMIC-CONE-PENETROMETER; MINNESOTA-; PAVEMENT-EVALUATION; SUBSURFACE-INVESTIGATIONS; QUALITY-CONTROL; TRENCH-BACKFILL; COMPACTION-; EDGE-DRAINS; GRANULAR-BASE; SPECIFICATIONS-; SUBGRADES-; CONDITION-MONITORING; LIMITS-; PENETRATION-INDEX |
| 摘要： | The Minnesota Department of Transportation (Mn/DOT) began testing the dynamic cone penetrometer (DCP) in 1991, finding the DCP an effective tool in the assessment of subsurface pavement conditions and strength. Researchers conducted extensive DCP testing and research on both the Minnesota Road Research Project (Mn/ROAD) and several pilot project sites in an effort to understand its useful applications in Minnesota. Mn/DOT currently specifies two applications of DCP testing in its pavement assessment procedure. One application involves using the DCP as a quality control device during the backfill compaction of pavement edge drain trenches. The second application involves its use in quality control of granular base layer compaction. This report details these applications and includes a copy of both specifications in the appendices. Other nonspecified applications of the DCP have included investigations of soft subcut areas, determination of the condition of base and subgrade materials under full depth bituminous cracks, and monitoring of the effectiveness of subgrade flyash stabilization. Researchers recently analyzed Mn/ROAD project DCP test results to determine the limiting DCP's penetration index (DPI) value for each particular subgrade soil and base type. The report presents recommended DPI limits. |
| 总页数： | 1997/05. pp37 (13 Fig., 1 Tab., 3 Ref., 4 App.) |
| 报告类型： | 科技报告 |
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