Date of Graduation

5-2023

Document Type

Thesis

Degree Name

Master of Science in Civil Engineering (MSCE)

Degree Level

Graduate

Department

Civil Engineering

Advisor/Mentor

Murray, Cameron D.

Committee Member

Fernstrom, Eric

Second Committee Member

Hale, W. Micah

Keywords

Bond-breaker; Curing compounds; Engineering; Roadway

Abstract

Currently Arkansas requires a layer of asphalt as the main bond-breaker over cement treated base for rigid pavement design. The study presented in this paper aims to replicate the results from previous research which demonstrated the bond-breaker properties of concrete curing compounds and geotextiles. Bond-breakers are materials applied to the surface of stabilized bases to reduce the interaction between the base and a pavement cement concrete layer. The excessive interaction between these two layers can lead to cracking in the overlay and reduction of the serviceability life of concrete. The curing compound was applied in a single application (SA, 200 sf/gal), a double application (DA, 75 sf/gal), and a DA with 24 hours in between applications (DA-24). The testing also included a Geotextile, Geotext 601, and specimens with no bond-breaker. The materials were tested using push-off and slant shear test procedures. It was determined that from the tested materials the DA of curing compound proved to be the most effective, and the geotextile was the least effective. The same trend is shown in the results from both procedures and replicating the trends of performance set by previous research. The geotextile showed a sticking point when tested in shear, where the specimen failed but the material still showed residual shear capacity.

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