01152359

Component

The need for a cold in-place recycling (CIR)-emulsion mixture with specific engineering properties calls for the use of a mix design and, recently, a new mix design procedure was developed for CIR-emulsion. As a part of CIR-emulsion mix design process, the simple performance tests, which include dynamic modulus test, flow number test, flow time test, and raveling test, were conducted to evaluate short- and long-term performance of CIR-emulsion mixtures at various testing temperatures and loading conditions. Based on the simple performance test results, the optimum emulsified asphalt content for CIR was determined. Dynamic modulus, flow number and flow time of CIR-emulsion mixtures using CSS-1h were higher than those of HFMS-2P. Flow number and flow time of CIR-emulsion using RAP materials with softer residual asphalt was higher than those of CIR-emulsion using RAP materials with harder residual asphalt. The dynamic modulus, flow number and flow time were affected by both emulsion type and residual asphalt stiffness of RAP materials. Raveling loss of CIR-emulsion with 1.5% emulsified was significantly less than those with 0.5% and 1.0%.

01147878

10-4010

English

8p

2010

Transportation Research Board 89th Annual Meeting

DVD

Figures (3) ; References (7) ; Tables (1)

Asphalt mixtures; Cold in-place recycling; Dynamic modulus of elasticity; Emulsified asphalt; Mix design; Pavement management systems; Recycled materials; Stripping (Pavements)

Flow number test

Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Transportation Research Board Annual Meeting 2010 Paper #10-4010

TRIS, TRB

Jan 25 2010 12:03PM