Roller-Compacted Concrete Shoulder Construction on Interstate Highway in Georgia

Abstract

In 2004, the Georgia Department of Transportation (GDOT) used roller-compacted concrete (RCC) for Interstate 285 shoulder reconstruction in Atlanta. This instance marks the first usage of RCC pavement in the Interstate highway system in the United States. The construction procedures are described, and the mix design data for the RCC material are presented. The results of a comprehensive field and laboratory investigation of the pertinent material properties are also presented. The 6- and 8-in. (150- and 200-mm) RCC shoulder was constructed with minimal disruption for the traveling public and has performed well to date. The RCC mix was designed for a 4,000-psi (27.6-MPa) compressive strength with 0.5-in. (12.5-mm) maximum size aggregate. More than 98% of the maximum wet density, as specified in the GDOT provision for average in-field density, was achieved in tests at random locations. The average compressive strength in the middle section showed close agreement with the design strength. Reasonably good density and strength values were achieved in the longitudinal joint area and right edge area. The strength from the field-manufactured cylinders did not adequately represent the core strength of RCC, but it was recommended to include the cylinder test in the specification to monitor mixture variability and strength development. A small increase in average density resulted in a larger increase in average compressive strength, but no strong linear relationship was established in individual data. The 8-in. RCC section demonstrated a higher average strength than the 6-in. section, but it also showed a greater propensity for shrinkage cracks.

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References

Piggot

R. W.

Roller Compacted Concrete Pavements: A Study of Long Term Performance. Portland Cement Association, Skokie, Ill., 1999.

State-of-the-Art Report on Roller-Compacted Concrete Pavements. American Concrete Institute, Farmington Hills, Mich., 1995.

Nanni

, Ludwig

, and Shoenberger

Roller Compacted Concrete for Highway Pavements. Concrete International, Vol. 18, No. 5, 1996, pp. 33–38.

Palmer

W. D.

Paving with Roller Compacted Concrete. Public Works, Jan. 2005, pp. 41–45.

Roller-Compacted Concrete Pavement Design and Construction. Technical Letter ETL 1110-3-475. U.S. Army Corps of Engineers, 1995.

Delatte

Simplified Design of Roller-Compacted Concrete Composite Pavement. In Transportation Research Record: Journal of the Transportation Research Board, No. 1896, Transportation Research Board of the National Academies, Washington, D.C., 2004, pp. 57–65.

Bacon

Road Breaks New Ground: RCC Used to Replace Shoulders in Atlanta. Public Works, Jan. 2006, pp. 36–38.

Singel

M. W.

Rolling Out RCC on I-285. Dixie Contractor, Nov. 2005.

Georgia DOT RCCP Shoulder I-285. Portland Cement Association, Skokie, Ill., 2006.

10.

Roller-Compacted Concrete. In USACE Engineer Manual EM 1110-2-2006, U.S. Army Corps of Engineers, 2000.

11.

Guide Specification for Construction of Roller-Compacted Concrete Pavements. Portland Cement Association, Skokie, Ill., 2004.

12.

Evaluation of Strength Test Results of Concrete. American Concrete Institute, Farmington Hills, Mich., 2002.

13.

Compaction of Roller-Compacted Concrete. American Concrete Institute, Farmington Hills, Mich., 2000.

14.

Shihata

S. A.

Strength and Density of Laboratory-Prepared RCC Specimens: Effect of Compaction Procedure. Cement, Concrete, and Aggregates, Vol. 22, No. 1, 2000, pp. 1–9.