EVALUATION OF PIONJAR 120/130 GASOLINE DRIVEN DRILL/BREAKER

This report describes the compactive capability of the Pionjar 120/130, a self-contained, hand operated unit, reportedly capable of breaking, cutting, digging, driving, and compacting. The objective was to determine if the Pionjar 120/130 combination drill/breaker manufactured by ADEMA, Inc., could compact a bituminous patching mixture to a density containing 6 to 8 percent voids. Medium textured WS patching mix was used to construct four test pads with mix temperatures at approximately 60 and 200 deg F. The mixture for the test pads at 60 deg F was taken and used directly from stockpile. The mixture for the test pads at 200 deg F was the same mixture, taken from the same stockpile, but was slowly heated to 200 deg F in a large oven. Test results indicate that the Pionjar unit can attain the desired density with the heated mix, with both size paddles, in 4 passes. The unit was not able to attain the required density with the unheated mix at 60 deg F. The unit compacts with the 6 inch paddle at the rate of 15 seconds/sq ft and the 8 inch paddle at 9 seconds/sq ft. It took about 16 minutes to compact the 4 ft x 4 ft test pad to peak density with the 6 inch tamper and 9 minutes using the 8 inch tamper. The operation of the unit in the compaction mode requires considerable effort in lifting the unit from one position to the other to obtain initial coverage. After the patch is partially compacted, an experienced operator can make the unit propel itself with a minimum of lifting. The somewhat slow compacting rate, due to the small shoe size, makes this unit more useful for small area patches not accessible to large shoe compactors. The unit appears to be particularly useful as a many purpose tool for the numerous small jobs that many times require heavy equipment. The absence of a mechanical connection between the engine and the hammer probably gives this unit a longer life potential than other units of comparable size.

• Corporate Authors:

  Indiana Department of Highways

  Indianapolis, IN  United States 
• Authors:
  • Sudol, J J
  • Fincher, H E
• Publication Date: 1982-11

Media Info

• Features: Figures; References;
• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Air voids; Bituminous mixtures; Compactors; Density; Patching; Performance evaluations; Temperature
• Uncontrolled Terms: Compaction equipment
• Old TRIS Terms: Air voids content
• Subject Areas: Highways; Maintenance and Preservation; Vehicles and Equipment; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 00476055
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Sep 30 1988 12:00AM