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Pavement Evaluation Using Road Rater Deflections

G. W. Sharpe / H. F. Southgate / R. C. Deen

Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the Road Rater also makes it possible to distinguish weaknesses in asphaltic concrete layers from weaknesses in the supporting foundation.

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Pavement Evaluation Using Road Rater Deflections

G. W. Sharpe / H. F. Southgate / R. C. Deen

Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the Road Rater also makes it possible to distinguish weaknesses in asphaltic concrete layers from weaknesses in the supporting foundation.

Pavement Evaluation Using Road Rater Deflections

G. W. Sharpe / H. F. Southgate / R. C. Deen

Dynamic test deflections have been duplicated by elastic theory using the Chevron N-layered computer program. Dynamic surface deflections obtained using the Road Rater have been used in conjunction with elastic theory to analyze pavement behavior. A procedure has been developed to use field measured Road Rater deflections to estimate the elastic moduli of the foundation material and to determine the equivalent thicknesses of new material which approximate the behavior of the structure. The estimated moduli and (or) equivalent thicknesses may be used as inputs to design overlay thicknesses. An analysis of the deflections of the first three sensors of the Road Rater also makes it possible to distinguish weaknesses in asphaltic concrete layers from weaknesses in the supporting foundation.

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Title:

Pavement Evaluation Using Road Rater Deflections

Contributors:

G. W. Sharpe (author) / H. F. Southgate (author) / R. C. Deen (author)

Publication date:

1978

Size:

249 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Highway Engineering , Construction Equipment, Materials, & Supplies , Flexible pavements , Bituminous concretes , Deflection , Nondestructive tests , Pavement bases , Modulus of elasticity , Field tests , Graphs(Charts) , Kentucky , Road raters

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