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Comparison Of Rigid Pavement Thickness Design Systems, Herbert F. Southgate

Kentucky Transportation Center Research Report

Rigid pavement thickness design systems investigated during this study were the 1986 AASHTO, American Concrete Pavement Association (ACPA), Portland Cement Association (PCA), and Kentucky methods. The ACPA system is a computer program based upon the 1966 AASHTO design equation. It was difficult to evaluate and compare the Kentucky method to the PCA system because the input and analysis procedures differ greatly.

The Kentucky method is based upon the fatigue relationship involving the value of work at the bottom of the concrete pavement caused by the applied load and repetitions of an 18-kip single axleload. The AASHTO method was derived from …

Soil-Bridge Abutment Interaction, Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

Presented herein are analyses of 6 bridge approaches. Lateral movement and settlement of the foundations and embankments are discussed. Result·s of slope stability and finite element analyses are related to measured movements. A graph for predicting approach pavement settlement is included. A theoretical approach model was used to run an extensive series of finite element analyses. Movements resulting from these analyses are presented with several variable model conditions. Variable conditions include embankment and foundation configuration, soil cohesion, and soil friction angle.

Wendell Berry: The Mad Farmer And Wilderness, David E. Gamble

The Kentucky Review

No abstract provided.

An Aeration Duct Design Model For Flat Grain Storage, Thomas C. Bridges, Douglas G. Overhults, Samuel G. Mcneill, G. M. White

Biosystems and Agricultural Engineering Faculty Publications

Traditionally most grain is stored in circular type bins which provide a convenient means for handling and management. With the excess grain production and government loan programs of the past few years, some producers have used rectangular structures and covered piles to complement their round storages. The recommended management practices used with round bins are still required in those alternative storages and may be more critical in obtaining a quality end product.

One such recommended practice used with round bins is aeration. This practice is used to maintain a uniform temperature in the grain mass, preventing condensation and "hot" spots …

Evaluation Of A Polymer Asphalt Additive -- Kraton (1118 And 4141), L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This report documents the use of two types of asphaltic concrete mixture designs. Both the control mixture and a Kraton rubber mixture were placed on sections of the Hazard Bypass, in Hazard, Kentucky. The location of the project is shown in Figure 1.

Earthquake Priority Routes For Mclean County, Kentucky, David L. Allen, Vincent P. Drnevich, L. John Fleckenstein, Mostafa Sayedsadr

Kentucky Transportation Center Research Report

No abstract provided.

Evaluation Of Hydraway Edge Drain On Pennyrile Parkway, David L. Allen, L. John Fleckenstein

Kentucky Transportation Center Research Report

No abstract provided.

Analysis Of Accidents In Construction And Maintenance Work Zones, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

This report includes documentation of the two following phases of the study : 1) analysis of statewide accidents for the period 1983 through 1986 in which "road under construction" was listed as a contributing factor; and 2) analysis of accident data and traffic control devices used at 20 case study locations. At the case study locations, accident data were analyzed for a three-year period before construction and compared to the period during construction.

Results from the statewide analysis indicate that even though the level of construction and maintenance activity is higher and traffic volumes have increased, there have not been …

Laboratory Evaluation Of Edge Drains, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

This report documents laboratory test results performed on four brands of highway edge drains. The four brands included in this study are Hydraway (by Monsanto), Akwadrain (by International Construction Equipment, Inc.), Advantage (by Advanced Drainage Systems), and PDS 40 (by Pro Drain Systems).

Preparation Of Biodegradable Microspheres Useful As Carriers For Macromolecules, Patrick P. Deluca, Frantisek Rypacek

Pharmaceutical Sciences Faculty Patents

A method for preparing biodegradable microspheres having a three-dimensional network in which biologically active macromolecular agents are physically entrapped therein. The microsphere is able to degrade and release the macromolecular agent at a controlled rate. The method involves emulsifying a vinyl derivative of a biodegradable hydrophilic polymer, a water-soluble monovinyl monomer and a biologically active macromolecule in water, and copolymerizing the biodegradable hydrophilic polymer and the water-soluble monovinyl monomer such that the biologically active macromolecule is entrapped therein.

Evaluation Of Extruded Thermoplastics As Lane Delineation, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

This study involved an evaluation of large-scale installations of both hydrocarbon and alkyd extruded thermoplastics as lane delineation on sections of interstate highways having open-graded surfaces. The objective of the study was to evaluate the performance of thermoplastics as lane delineation and to compare the performance of hydrocarbon versus alkyd formulations.

Data were collected on a periodic basis over an 18-month period. Data collection consisted of daytime observations of the appearance and durability of the thermoplastic material along with reflectivity measurements using a portable retroreflectometer.

The evaluation revealed that both the hydrocarbon and alkyd extruded thermoplastic material maintained their appearance, …

Publications Committee Annual Report, April 1, 1988, Seaall

Newsletter and Public Relations Committee

An annual report of the Publications Committee for the 1987-1988 year.

The Review, Spring 1988, University Of Kentucky College Of Law

Annual Magazines

No abstract provided.

Ann O'Hanlon's Kentucky Mural, Harriet W. Fowler

The Kentucky Review

No abstract provided.

The Painters Of Henry Clay As "The Sage Of Ashland", Clifford Amyx

The Kentucky Review

No abstract provided.

Evaluation Of Lime Stabilized Road Bed, Bobby W. Meade, David L. Allen

Kentucky Transportation Center Research Report

In October 1986, the Transportation Research Program of the University of Kentucky published a report evaluating the addition of hydrated lime to the subgrade soils of Section 19 of the Ashland-Alexandria (AA.) highway (1). That study involved laboratory testing only and concluded that the engineering properties of these subgrade soils were significantly improved with the addition of 6 percent (by weight) hydrated lime. It was decided to add hydrated lime to the subgrade soils on Section 19.

Because that procedure had not previously been used in Kentucky, a study was approved to monitor construction procedures and the performance of an …

Allocation Of Highway Costs And Revenues, Jerry G. Pigman, John A. Deacon

Kentucky Transportation Center Research Report

A continuing task related to highway financing is determination of the appropriate level of taxation for each class of highway user. Cost allocation in various forms has traditionally been the tool used to achieve an equitable assignment of user responsibility. Following is a summary of results from such a cost-allocation study undertaken by the University of Kentucky's Transportation Research Program. The objective of this study is to determine highway cost responsibility of various user classes and to assess revenues relative to costs under existing levels of taxation and under various alternatives considered in the 1988 legislative session.

Evaluation Of Procedures For Testing Aggregates, David Q. Hunsucker

Kentucky Transportation Center Research Report

This report summarizes findings of a research study conducted to evaluate aggregate testing procedures as related to aggregate soundness and durability. The objectives of the study were to determine a suitable replacement or modification of Kentucky's existing Sodium Sulfate Soundness Test for aggregates which would more accurately reflect in-service performance of concrete pavements and bridges, to correlate freezing and thawing durability data and other test data with sodium sulfate soundness data, and to develop a rational implementation criterion for use of new or modified testing procedures.

There were no observable correlations between the various test methods evaluated and the Sodium …

Excessive Beam Deflections On The Ky-52 Bridge Over Dix River (Boyle-Garrard County Line), Theodore Hopwood Ii, Vishwas G. Oka, David Q. Hunsucker, James H. Havens

Kentucky Transportation Center Research Report

Upon rehabilitation, beams and deck of the Ky 52 bridge over Dix River were observed to have excessive deflections. An investigation of the problem included field inspections, structural analyses, and interviews with relevant KYDOH and other personnel.

Field measurements were made of the beam deflections. Those were compared to construction field measurements and dead-load calculations.

The beam deflection problem is attributed to 1) a failure to provide for sufficient camber in the beams to accommodate for construction dead loads, and 2) pre-existing sags in the beams when placed prior to casting the deck. Part of the deck deflection problem can …

Harvester Guidance Control System, George B. Day V, Timothy D. Smith

Biosystems and Agricultural Engineering Faculty Patents

A guidance control system for a harvester or like machinery includes a steering linkage operatively connected to at least one ground engaging wheel. Harvester steering is controlled through the linkage by either an operator controlled steering wheel or a sensor responsive self-steering mechanism. The sensor responsive self-steering mechanism includes a guide assembly pivotally mounted to the harvester. The guide assembly includes a pair of laterally spaced, cooperating tines that define a path therebetween for plants being harvested. A sensor positioned on each tine senses the position of plants as they are harvested. A control circuit is responsive to the sensors …

Evaluation Of Ads Polyethylene Pipe, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

Construction and performance evaluations of ADS Polyethylene Pipe N-12 are presented. Construction procedures and visual inspection data are included. The pipe appears to be performing well.

Evaluation Of Stability And Rutting Potential Of Asphaltic Concrete Using Big-Stone Gradations, David L. Allen, Hossien Roghani

Kentucky Transportation Center Research Report

Considerable interest has been generated in recent years in using big stone gradations to reduce rutting and shoving in asphaltic concrete. This report documents mix design procedures and a laboratory testing program to determine the stability and rutting potential of a big-stone gradation. A series of creep tests was performed on a big-stone gradation and the results were compared to creep tests performed on a Class I base mixture. The big-stone mix average approximately 50 percent rutting potential as compared to the Class I base. One creep specimen of the big-stone mixture was compacted using polymer-modified AC-20 grade asphalt cement. …

Long-Term Evaluation Of The Acoustic Emission Weld Monitor, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

The Kentucky Transportation Research Program conducted an extended 10- month evaluation of the Acoustic Emission Weld Monitor (AEWM) in a bridge fabrication shop. That device was used to detect welding flaws during typical production of butt-welds on flanges and webs used in steel bridges. A total of 153 welds were monitored.

AEWM test results were compared with visual inspection and double- blind results of conventional nondestructive testing routinely conducted on the welds. The AEWM did not miss any flaws detected visually or by nondestructive testing. Three AEWM flaw indications were confirmed by conventional nondestructive testing (radiography).

A large number of …

Review Of Work Zone Literature, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

A literature search was conducted with the objective of identifying sources of information related to safety in highway work zones. Included is an annotated bibliography of 165 references. From the references, a list of recommendations were made to improve safety in highway work zones. The recommendations were organized into the six categories listed below.

1. Flagging
2. Delineation
3. Traffic Control Devices
4. Accidents
5. Design
6. Policy

How Safe Is Your Drinking Water?, Larry R. Piercy, Joseph L. Taraba

Agricultural Engineering Extension Updates

Water is a basic ingredient of life and a safe water supply is essential for our good health. Adequate supplies of clean drinking water, whether it comes from a well or from a municipal treatment plant should be everyone's concern. The recent drought conditions have forced many people to realize how critical adequate and safe water supplies really are to the well-being of their families and communities.

Temporary Silage Storage, Doug Overhults, Larry Turner, Sam Mcneill, Larry R. Piercy, George Turner

Agricultural Engineering Extension Updates

The following information is intended as a supplement to the attached publication entitled "Temporary Silage Storage Systems" published by the Purdue University Cooperative Extension Service.

Costs, Construction And Suppliers For High Tensile Wire Fencing, Larry W. Turner, Samuel G. Mcneill

Agricultural Engineering Extension Updates

There is increasing interest in the use of high tensile fencing because of its longer life and lower cost than conventional woven wire fence. Originally introduced to this country from Australia and New Zealand, high tensile fence is proving to be quite adaptable for use in intensive grazing management systems.

What Is Your Farm's Potential To Pollute Your Drinking Water Supply, Joseph L. Taraba

Agricultural Engineering Extension Updates

The following list of questions are a useful guide to assess whether farm and/or home activities or the type of well contribute to polluting your private drinking water well. If you answer "yes" for one or more of the questions than you should begin a program of annual well testing. It is recommended that a coliform bacteria test and nitrate test be performed annually. The annual cost for these tests performed by a testing laboratory is $26.00. There is an additional test that is available that determines if there is the presence of organic halides (chlorinated or brominated organics) called …

Rapid Method For Determining Fertilizer Nutrients In Liquid Dairy And Swine Manures, Joseph L. Taraba

Agricultural Engineering Extension Updates

A rapid on-farm determination is needed to assess the fertilizer contents of liquid manure as it is taken from storage. Rapid determination of a tank load for liquid manure will indicate nutrient changes that occur as manure is removed from a storage which cannot be or is not effectively agitated before manure removal. Effective utilization of animal manures as a fertilizer resource requires a farmer to have a knowledge of the amount of nutrients that he is putting onto the soil. If the producer then reduces the commercial fertilizer, he can realize the fertilizer economic value of the manure. Laboratory …

Reducing Summer Heat Stress In Dairy Cows, Larry W. Turner, John P. Chastain, William L. Crist

Agricultural Engineering Extension Updates

Potential declines in milk production of as much as 20% or more are the reason we need to be concerned about heat stress in dairy cows. Heat stress can reduce feed intake, milk production and reproductive efficiency. There are several options available to Kentucky dairymen to combat heat stress in cows.