A Laboratory Investigation of Factors Affecting the Slipperiness of Bituminous Paving Mixtures

Shupe, John Wallace

doi:10.5703/1288284313550

Cited by 4 publications

(6 citation statements)

References 2 publications

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“…One such machine has been used by the Kentucky Highway Department (i!vO) and consists of a standard drill press driving a rubber ring against the pavement sample. The machine in use at Purdue University measvires the torque transmitted to a fixed rubber shoe by a rotating six-inch pavement sample (75,76,78). The laboratory of the Tennessee…”

Section: Laboratory Investigationsmentioning

confidence: 99%

“…The asphalt content varied from five to ten percent by weight of the aggregate. Wet skid resistance was measured by means of the machine developed by J. Shupe (78) and results are expressed as relative resistance values as read from the oscillograph on this machine.…”

Section: Effect Of Gradation On the Skidding Resistance Of Fine Bitummentioning

confidence: 99%

“…The possibility of using sharp, angular or crushed aggregate for increasing the skid resistance of pavement surfaces has been considered many times. Little actual test data are available to substantiate such possibilities, but limited tests by Shupe (78,79) indicate that after several polishing cycles, round aggregate may supply more skid resistance than angular. His explanation for this apparently little understood result was that the round aggregate compacted more readily and hence gave greater densities and thus had more aggregate in contact with the test shoe.…”

Section: -mentioning

confidence: 99%

“…Compaction as carried out by Shupe (78) gave somewhat erratic results when applied to the fine mixes, apparently depending on the energy expended by the vibrator operator. Various means of securing a standard degree of completion were tried and the results are listed in Table lU of Appendix C. The small jack frame and Cleveland vibrator shown in Figure 27 were used for the standard method of compaction because of ease and rapidity of the operation and satisfactoriness of the results.…”

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confidence: 98%

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A Laboratory Investigation of the Phenomenon of Friction as Applied to Fine-Textured Bituminous Paving Mixtures

Stephens¹

1959

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Section: Laboratory Investigationsmentioning

confidence: 99%

Section: Effect Of Gradation On the Skidding Resistance Of Fine Bitummentioning

confidence: 99%

Section: -mentioning

confidence: 99%

mentioning

confidence: 98%

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A Laboratory Investigation of the Phenomenon of Friction as Applied to Fine-Textured Bituminous Paving Mixtures

Stephens¹

1959

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“…Review of the study by Russell (1972) In a study performed by Shupe (1958), an increase in magnesium content for Indiana limestone sources showed an increase in friction properties. In other words, the less pure limestones having greater magnesium content and thus greater mineral diversity were better aggregates with regard to frictional resistance.…”

Section: Methodsmentioning

confidence: 99%

Development of a Procedure to Identify Aggregates for Bituminous Surfaces in Indiana

Bruner¹,

Choi²,

West³

1996

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Prepared in cooperation with the Indiana Department of Transportation and Federal Highway Administration. AbstractAdequate friction resistance is needed to prevent pavement slipperiness allowing vehicles to stop in a reasonable distance. For stone mastic asphalt surfaces, friction resistance is mainly a function of the interaction between the aggregates exposed at the road surface and vehicle tires. Aggregate performance is reduced with time by wear and polishing as a consequence of vehicular traffic. In this research a method to investigate performance based on physical, chemical and petrographic factors has been evaluated. The objective was to develop a laboratory method to test Indiana dolomite, limestone, sandstone, and gravel aggregates to predict friction resistance in the field and determine causes for the range of values among these aggregates. Assessment of gravel sources was based on individual rock types and their proportions comprising the gravel. Initial friction Values (IFV) and Polished Values (PV) were determined in the laboratory with the British Wheel and Pendulum test and field values obtained from the towed friction trailer. For two laboratories involved a significant difference in IFV and PV was obtained so that further verification is required. Correlations between parameters were established which provide predictions of friction resistance based on laboratory specimens. A database of physical and chemical properties should be collected on aggregates used or considered for bituminous wearing courses. This includes the testing required for Class A aggregates plus elemental Mg and elemental Ca content. 17.

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Evaluation of Dolomite and Related Aggregates Used in Bituminous Overlays for Indiana Pavements

West

Choi

Bruner

et al. 2001

Transportation Research Record: Journal of the Transportation R

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To allow vehicles to stop in a reasonable distance, adequate friction resistance is needed to prevent pavement slipperiness. In stone-masticasphalt surfaces, friction resistance is mainly caused by the interaction between aggregates exposed at the surface and vehicle tires. Performance of aggregates is reduced with time through wear and polishing by vehicular traffic. A method to investigate aggregate performance using physical, chemical, and petrographic factors was evaluated. The objective was to develop a laboratory test for Indiana dolomite, limestone, sandstone, and gravel aggregates to predict field friction resistance and to determine causes for the range of polish resistance of these aggregates. Dolomite and slag are specified aggregates for wearing surfaces for high-traffic roads in Indiana, but some limestones and crushed gravels may prove acceptable. Gravel sources were assessed on the basis of percentages of rock types included in the gravel. Initial friction values and polished values were determined in the laboratory using the British wheel and pendulum procedures, and field values were determined with the towed friction trailer (ASTM E274-97; average friction numbers), which yielded friction number smooth (smooth tire) and friction number ribbed (ribbed tire). Correlations between parameters predict friction resistance from laboratory test data. Also polished values of 25 may be equivalent to a friction number smooth of 27.7 and friction number ribbed of 30.7. Further refinement is required to establish performance specifications for individual aggregate selection.

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A Laboratory Investigation of Factors Affecting the Slipperiness of Bituminous Paving Mixtures

Abstract: This report lists the desirable features that should be included in a laboratory method for evaluating the skidding resistance of different types of pavement surfaces, and discusses them in light of previous research. The lab-*

Cited by 4 publications

References 2 publications

A Laboratory Investigation of the Phenomenon of Friction as Applied to Fine-Textured Bituminous Paving Mixtures

A Laboratory Investigation of the Phenomenon of Friction as Applied to Fine-Textured Bituminous Paving Mixtures

Development of a Procedure to Identify Aggregates for Bituminous Surfaces in Indiana

Evaluation of Dolomite and Related Aggregates Used in Bituminous Overlays for Indiana Pavements

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