1,554 Works

The Bump at the End of the Bridge

Tommy C. Hopkins & Robert C. Deen
The nature and causes of the differential settlements between a bridge deck and the adjoining highway approach pavement have been the subject of an increasing number of investigations in recent years. This settlement of the highway approach pavement not only presents a hazardous condition to rapidly moving traffic, but creates a rough and uncomfortable ride. These defects of the pavement surface require costly maintenance and, where a heavy traffic flow exists, the maintenance operation may...

Engineering Geognosy of Boyd County

Tommy C. Hopkins & Jerry G. Pigman
Engineering soils and geologic maps are proving to be invaluable tools of engineers, industrial leaders, community planners, and administrators during tbe preliminary stages of planning and site selection for major construction projects and the development of plans to use nature's basic resource--the land. Quantitative engineering data for soils and geological formations, and the interpretation of tbese data, are important factors to consider in the best land-use plans and in providing stable foundations and proper usage...

Lateral Distribution of Traffic on a Four-Lane and Six-Lane Section of I 75 South of Covington

Robert L. Lynch & Gary N. Hamby
With the increased construction of multilane highway facilities in the past few years, the need for establishing corresponding design and traffic operational criteria for these highways has resulted. This is especially true for rural, multilane facilities, since few of these highways are not, as yet, operating at a critical level of traffic service. One area of traffic operational characteristics that has received very little attention in the past concerns the distribution of vehicles by lane...

Performance of a Reinforced Concrete Pipe Culvert Under Rock Embankment

Robert C. Deen
A 48-inch diameter reinforced concrete pipe installation has been observed in order to evaluate the performance of both types of bedding conditions as currently used by the Kentucky Department of Highways. A portion of the pipe was laid using Kentucky's Standard B Bedding. The remainder of the pipe culvert was laid using the B1 Bedding (imperfect trench); the design height of the fill (36 feet) was sufficient to require the imperfect trench construction. The embankment...

A Concrete Pavement Without Transverse Joints

Ronald D. Hughes
In 1949, a 5.737-mile section of portland cement concrete pavement was constructed without the inclusion of transverse joints. The project, designated as Fl 239(4), is a section of US 31W located in Simpson County extending from the Tennessee line (Sta 9+11) to the south city limits of Franklin (Sta 311+40). The pavement is 22 feet wide, 8 inches thick, and is underlain by 1-1/2 inches of compacted No. 10 crushed limestone for insulation and leveling....

Skid Testing with an Automobile

Rolands L. Rizenbergs & Hugh A. Ward
A study was conducted to evaluate the theoretical and practical aspects of using an automobile as a testing device for measurement of pavement slipperiness. Every parameter and significant event in the excursion history of a skidding automobile was measured and recorded. The resultant skid-resistance values, twenty-five in all, were compared and correlated. As a result of the study, the measurement of time in the velocity increment between 30 mph to 20 mph was selected as...

Kentucky Rock Asphalt Bases and Hot-Mix Surfaces;

Robert L. Florence
The objectives of this study are disposed toward the development of Kentucky Rock Asphalt for use as a traffic-bound base and surface on rural roads near its source and toward re-development of the material for use as hot-mixed, hot-laid, skid-resistant surface course for higher echelon roads. The material is a natural asphaltic-sandstone which occurs in considerable abundance in Edmonson County and in other outcrops of Pottsville sandstones bordering the eastern rim of the Western Kentucky...

Experimental Applications of Protective Coatings to Shales Exposed in Highway Cuts

James H. Havens
Many shales exposed in roadway cut-sections are susceptible to weathering, slaking, and erosion; fallout and taluses clog drainage; benches overflow; and occasionally landslides or rockslides develop. Presently, in design, certain types of shales and even named formations are afforded wider benches than others; soil mantles at the tops of cuts are being stripped back farther; and, of course, sound ledge-rock offers the preferred type of bench-cap. Pre-splitting methods of blasting have greatly enhanced the appearance...

Temperature Distribution Within Aspalt Pavements and its Relationship to Pavement Deflection

Herbert F. Southgate & Robert C. Deen

Research Relating to State Highway Laws

James H. Havens
The Department's study began late in 1962 and was undertaken as a review and analysis of the main body of highway law; but, of course, any subsequential objectives--stated or implied-remained contingent upon and would become a natural consequence of the first-mentioned type of inquiry and the improbablity of discovery. Undoubtedly, the Department was influenced by and was under inducement of the Bureau of Public Roads in this undertaking, The review-and-analysis phase was accomplished, in part,...

Stability Analyses of Earth Masses

Robert C. Deen, Gordon D. Scott & W. W. McGraw
During the past few months (January, 1966, to the present) the Division of Research has been called upon to make site investigations and analyses of foundation and slope stability at several locations in the State. These requests have emanated from various offices and divisions of the Department. Some of these investigations involved considerable effort and time to perform the subsurface exploration and to analyze the problem so that recommendations could be made. These investigations were...

Composite Pavement Design

James H. Havens
There is an aura of superiority attached to the work "composite"--that is to say, the composite of anything is expected to be superior to its distinct elements of parts. It will suffice here to define a composite pavement as being compounded of "rigid" and "flexible" parts or layers. In reality, we mean layers of portland cement concrete and bituminous concrete--each of which is admirably sufficient in itself or may be so down-graded to satisfy lesser...

Relationship Between Kentucky CBR and Slake Durability

Tommy C. Hopkins
The design of pavements requires a knowledge of the relative strength and durability of subgrade materials. In Kentucky, the CBR (California Bearing Ratio) test is used to define the relative bearing strength of subgrade materials. Pavement thickness can be obtained if traffic loadings and CBR values are known. Durability of subgrade materials can be characterized using the slake-durability test. The purposes of this study were to correlate values of (soaked) KYCBR and slake-durability indices and...

Performance of Initial Treatments, Constructed During 1963

James H. Havens & Robert L. Florence
Seventeen initial bituminous treatment projects were advertised for bids during 1963, which permitted bituminous concrete Class I Surface (hot-mix) as an alternate to Class C-1 Surface (road-mix). The hot-mix surface course was to contain a minimum of 6 percent PAC-9. Eleven of the contracts, totaling 38.841 miles in length, were awarded as hot-mix; and the remaining six contracts, totaling 18.12 miles in length, were awarded as road-mix.

A Laboratory Investigation of the Properties of Coal-Bitumen Paving Mixtures

Gary Grant Howard
The principal objective of this study was to investigate the feasibility of using coal, and to a lesser extent coal mine wastes, as aggregate in bituminous paving mixtures. These local aggregates were laboratory tested in bitumen-aggregate mixtures and, more particularly, in so-called cold-mixes. The bitumen-aggregate mixtures were evaluated by the Immersion-Compression Test, ASTM D 1075-60, with modifications for cold mixtures recommended in the Public Roads Journal (4). In this initial study, since it was not...

Slurry Seal Maintenance and Test Applications of 1962

Robert L. Florence

Experimental use of Thermo-Plastic Pavement-Striping Materials

James H. Havens
The purposes and objectives of this experimental study are: 1) to evaluate the application and performance characteristics of hot-melt plastic, pavement-striping materials which are presently prominent and known commercially as "Catatherm" and "Perma-Line"; 2) to compare the performance of these materials with the performance of painted stripes applied and re-newed according to the current practices of the Kentucky Department of Highways; and 3) to evaluate the economics of these striping materials in terms of cost-per-mile...

Concrete, Bridge Decks:

James H. Havens & William B. Drake
This report is not wholly a culmination of a planned or programmed research project. It is a historical account of damage sustained by both new and old concrete bridge-decks -- through freeze-thaw, salt action, etc, -- and of some expedient repairs which have been effected. The problem of durability in concrete bridge-decks has become increasingly critical during the past ten years or so and is now a major concern to highway engineers throughout the northern...

Laboratory Testing of Wet-Processed Kyrock

Robert L. Florence


Donald F. Goodwin
Born in 1972, Luis Serrano Alarcón has in a very short period of time, established himself as one of Spain’s most prominent composers. His works are constantly being performed, not only in his home country, but throughout the world. While some of his compositions tend to retain the rhythmic, harmonic, and melodic style typical to Spanish music, many of the works sound as if they were borne more from the Viennese symphonic tradition, both during...

The New Monastics and the Changing Face of American Evangelicalism

William A. Samson
American Evangelicalism is, indeed, “embattled and thriving,” as Smith et. al. (1998) have suggested, thriving precisely because it has remained in an embattled state as it cyclically seeks to establish itself as a counter to the dominant culture. However, over the last 40 years American Evangelicalism has become ingrained in the dominant culture and a new group of young Evangelicals are establishing themselves as the counter to that culture and thus defining themselves against Evangelicalism...

Observation on Seal Coats, Tack Coats, Penetration Macadam, and Blade Spread Hot Mix in 1951

William B. Drake, Harvey J. Field & S. T. Collier
During the 1950 construction season the Research Division observed the construction of several types of seal coats, a few tack coats and a penetration macadam pavement, A report, covering mostly construction practices on these projects, was submitted to the Research Committee at the February meeting in 1951. The report is titled "Observations on Seal Coats, Tack Coats, and Penetration Macadam Construction in 1950," and dated January, 1951. A follow-up of most of these projects is...

Field and Laboratory Evaluation of Roadside Sign Surfacing Materials

James H. Havens & Allie C. Peed
This paper discusses the physical and optical characteristics of sign materials and also the design and application of a Reflectometer as devised and used by the Kentucky Department of Highways in the testing of these materials, Accelerated weathering procedures and specification standards are described. Field studies paralleling the laboratory work and a possible correlation between the two are described. The field work consists of several thousand individual observations covering thirty different sign surface types under...

Comparative Study of the Physical Properties of Traffic Paints

A. C. Peed
Traffic or zone paints have become a major item of expenditure for highway departments with their increasing mileages and with the increase in traffic using the highways. Extending the mileage requiring marking and increasing the traffic wear on the marking has necessitated successively larger purchases of paint and associated equipment. As this market became larger increasing numbers of manufacturers have entered the field with a great diversity of formulations having differing properties. In order to...

Computerized Analysis of Stress-Strain Consolidation Data

E. Gregory McNulty
A computerized, mathematical algorithm is described and presented for analyzing the semilogarithmic stress-strain (time-independent) properties of standard, controlled-gradient, and controlled-rate-of-strain consolidation tests. This algorithm is an automation of manual graphical procedures currently used in engineering practice to obtain stress-strain information necessary for use in time-independent settlement analysis. The Casagrande and Schmertmann constructions are analytically represented to determine the preconsolidation stress and the in situ, compressibility coefficients of compression and expansion. Values for each of these...

Registration Year

  • 2016

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