Engineering Commons^™

Kentucky Rock Asphalt (Kyrock) Road Surfacing Material: Preliminary Investigation, Jerry G. Rose

Kentucky Transportation Center Research Report

This report documents a preliminary investigation of Kentucky Rock Asphalt (Kyrock) - as a road surfacing material. The indigenous bituminous impregnated sandstone was widely used as a premium quality skid resistant surfacing material during the first half of this century. Redevelopment efforts gained momentum during the 1960's, but for the last twenty years interest has waned.

Laboratory tests were conducted on the Kyrock to determine its applicability in bituminous surface mixes by blending Kyrock with virgin materials in a similar manner as adding recycled asphalt pavement. The findings indicated it was feasible to blend Kyrock and a continuation proposal was …

Preliminary Engineering, Monitoring Of Construction, And Initial Performance Evaluation: Use Of Ponded Fly Ash In Highway Road Base, David Q. Hunsucker, R. Clark Graves

Kentucky Transportation Center Research Report

This report summarizes findings of laboratory and field trial evaluations of ponded fly ash used as a component In a stabilized aggregate base course. Ponded fly ash is the fine portion of pond ash which is a by-product of a coal burning process and Is disposed by sluicing to a disposal pond.

Three stabilized aggregate base mixtures containing various proportions of dense graded aggregate, ponded fly ash, and hydrated lime were evaluated In the laboratory relative to maximum dry density, optimum moisture content, and unconfined compressive strength. The mixture that was selected for field trial evaluation had the highest unconfined …

Demonstration Project No. 59: The Use Of Fly Ash In Highway Construction, Fayette County, Kentucky, David Q. Hunsucker, Gary W. Sharpe

Kentucky Transportation Center Research Report

This report summarizes preliminary site investigations, design criteria and procedures, construction criteria and procedures, and results of initial and final evaluations of an experimental road base utilizing lime kiln dust, fly ash and aggregate. Observed performance has been satisfactory. Compressive strength evaluations indicate exceptional early strength and continued strength gain of the pozzolanic base. Back calculation of specific elastic layer moduli indicate that the moduli of the pozzolanic base material is most likely within a range of 500,000 to 1,000,000 psi.

Based upon observations to date, treated bases enhance overall pavement performance and their use should be continued. It is …

Transportation Research Reports Issued By The Division Of Research, Robert C. Deen

Kentucky Transportation Center Research Report

A bibliographic listing of research reports issued by the Division of Research, Kentucky Bureau of Highways.

Pedestrian Accidents In Kentucky, Charles V. Zegeer, Robert C. Deen

Kentucky Transportation Center Research Report

When a pedestrian is hit by a motor vehicle, he is usually injured or killed; there is no protective cushion to absorb the impact. The high concentration of pedestrians in urban areas, coupled with heavy vehicle traffic, often results in large numbers of pedestrian accidents. In rural areas, there are considerably fewer pedestrians but traffic speeds are higher and, therefore, accidents are more often fatal.

Pedestrian fatalities have increased in the United States from about 7,800 in 1960 to approximately 10,500 in 1973 (1). There are 120,000 pedestrian accidents each year. Total traffic accidents in the US number about …

Noise Pollution And Abatement: A Review Of Literature, Kenneth R. Agent, Robert C. Deen

Kentucky Transportation Center Research Report

Complaints concerning traffic noise and possibly seismic vibrations emanating from highways would probably have been adjudicated on the basis of common law doctrines pertaining to "nuisances", "common enemy'', and ''power of relief" were it not for recent legislation and regulations directed toward protection of the total environment. In effect, "freedom from noise" has been added to the clean water, clean air, clean earth policies. Surely each of those policies are founded on public sentiment.

There have been a few instances where the Department has yielded relief because of traffic noise. Now safeguarding regulations seem inevitable.

In the past, this Division …