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Articles 5101 - 5130 of 6342

Full-Text Articles in Engineering

Construction And Performance Evaluation Of A Geocomposite Pavement Edge Drain Including Comparison With A 4-Inch Pipe Drain, L. John Fleckenstein, David L. Allen Jul 1987

Construction And Performance Evaluation Of A Geocomposite Pavement Edge Drain Including Comparison With A 4-Inch Pipe Drain, L. John Fleckenstein, David L. Allen

Kentucky Transportation Center Research Report

Construction and performance evaluations of Hydraway Drain and Conventional Pavement Edge Drain are presented. Construction procedures, laboratory tests, and discharge data, are included.


Implementation Of A Pavement Management Program In Lexington-Fayette County, Kentucky, Gary W. Sharpe, Robert C. Deen, Ronald R. Sewell Jul 1987

Implementation Of A Pavement Management Program In Lexington-Fayette County, Kentucky, Gary W. Sharpe, Robert C. Deen, Ronald R. Sewell

Kentucky Transportation Center Research Report

Lexington, in central Kentucky, is the second largest city in the state. Local government is by a mayor and council of elected representatives from twelve districts and three at-large representatives. The Department of Public Works headed by a Commissioner, who reports to the mayor and city-county council, administers the streets and roads system.

The street and road network in Lexington consists of approximately 720 centerline miles. Approximately 100 miles are rural in nature and 620 miles are urban. Approximately 95 percent are bituminous surfaced roads; a majority of the remainder is constructed of portland cement concrete.

Increasing costs for constructing …


Road Base Construction Utilizing Coal Waste Materials, David Q. Hunsucker, Gary W. Sharpe, Jerry G. Rose, Robert C. Deen Jul 1987

Road Base Construction Utilizing Coal Waste Materials, David Q. Hunsucker, Gary W. Sharpe, Jerry G. Rose, Robert C. Deen

Kentucky Transportation Center Research Report

The paper describes the development and implementation of a no-cement concrete mixture containing pulverized fuel ash (PVA) and atmospheric fluidized bed combustion (AFBC) by-products as the cementitious components for combination with conventional limestone aggregates used as bulk filler. The paper presents a summary of laboratory evaluations and the application of those results to the design of a base for roadway construction. The paper also describes the construction, evaluation, and performance of a pilot application of this material used as a base for a thin bituminous pavement.


Performance Evaluation Of Breakaway-Cable-Terminal End Treatments, Jerry G. Pigman, Kenneth R. Agent Jun 1987

Performance Evaluation Of Breakaway-Cable-Terminal End Treatments, Jerry G. Pigman, Kenneth R. Agent

Kentucky Transportation Center Research Report

This report included an analysis of 110 accidents involving breakaway-cableterminal (BCT) end treatments and 36 accidents involving median-breakaway-cableterminal (MBCT) end treatments as used in Kentucky. The primary data base consisted of Kentucky accident records for the years 1980-87; with a few accidents that were identified before 1980. An attempt was made to document each accident with a police report, photographs, and a maintenance repair form.

Results revealed that the breakaway-cable-terminal end treatment performed properly in 73 percent of the accidents when all three configurations of end treatments were combined (simple curve, parabolic flare, and straight). Proper performance was defined as …


Allocation Of Resurfacing Monies To Highway Districts In Kentucky, Rolands L. Rizenbergs, Robert C. Deen Jun 1987

Allocation Of Resurfacing Monies To Highway Districts In Kentucky, Rolands L. Rizenbergs, Robert C. Deen

Kentucky Transportation Center Research Report

Allocation of resurfacing and rehabilitation monies began in 1967 with the separate funding of a resurfacing program. Pavement projects for resurfacing and rehabilitation were selected more often than not on the basis of politics and arbitrary (i.e., without the benefit of analysis of good inventory and condition data) judgments of decision makers. With the gradual introduction of more adequate roadway inventory and annual condition data, the formula for the allocation of funds has been gradually revised, updated, and improved so there is now a more logical and equitable distribution of funds.

With the formation of a pavement management staff in …


User's Guide For Pavement Condition Surveys, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen Jun 1987

User's Guide For Pavement Condition Surveys, Gary W. Sharpe, Herbert F. Southgate, Robert C. Deen

Kentucky Transportation Center Research Report

The pavement condition survey is a visual inspection of the travelway of a street/road system. The survey provides measures to assess the magnitudes of various types of pavement distress. The rater is not to make evaluations on the basis of known or suspected subsurface conditions. It is necessary the rater only report in an objective manner what is seen. The types of distress include the following:

For Asphaltic Concrete Pavements: Alligator Cracking, Block/Transverse Cracking, Reflective Cracking, Rutting, Raveling, Bleeding, Surface Irregularities (shoving, corrugations, potholes), and Patching/Utility Cuts.

For Portland Cement Concrete Pavements: Blowups, Spalling and Popouts, Map Cracking, Longitudinal Cracking, …


Evaluation And Application Of Roadway Marking Materials, Kenneth R. Agent, Jerry G. Pigman May 1987

Evaluation And Application Of Roadway Marking Materials, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

Three different areas of roadway delineation were included in this study. These areas were:

  1. Lane delineation materials,
  2. crosswalk delineation materials, and
  3. snowplowable markers.

Evaluation of lane delineation materials revealed that expanded use was warranted for polyester paint and extruded thermoplastic. The alkyd-resin extruded thermoplastic material was determined to be the most cost-effective material for crosswalk and stop bar installations. Durability and reflectivity results show that Stimsonite 96 markers have performed effectively as snowplowable markers while the recessed markers have performed effectively except on certain interstate locations.


Evaluation Of Construction-Zone Pavement Marking Materials, Kenneth R. Agent, Jerry G. Pigman May 1987

Evaluation Of Construction-Zone Pavement Marking Materials, Kenneth R. Agent, Jerry G. Pigman

Kentucky Transportation Center Research Report

The objectives of this study were to evaluate available foil-back and removable tapes as well as construction-zone raised pavement markers and to recommend materials that should be included on approved lists for use by the Kentucky Department of Highways. Tapes and markers were placed on transverse test sections and the reflectivity, durability, and appearance were observed.

Tapes to be included on the approved lists for foil-back and removable tapes were recommended. Tapes manufactured by 3M, Flex-O-Lite, Cataphote, and Swarolite were included on the list of acceptable foil-back tapes. Recommended removable tapes were the 3M and Cataphote removable tapes. Stimsonite 66 …


Evaluation Of Drainage On Nicholasville Bypass, David L. Allen May 1987

Evaluation Of Drainage On Nicholasville Bypass, David L. Allen

Kentucky Transportation Center Research Report

Construction of the Nicholasville Bypass (US 27) was completed in 1986. At the north end of the bypass is a raised, paved traffic median (Figures 1 and 2). The median was constructed with a lip curb and gutter. The roadway at that location is in a superelevated section. A raised, paved traffic median also is located at the southern end of the bypass, Figures 3 through 5 are photographs of that median. The median is located on a tangent section therefore, the roadway has a normal crown. The section of roadway at the southern end is located on a slight …


Appendix A: Index Of Participants [1987], Kentucky Transportation Center Mar 1987

Appendix A: Index Of Participants [1987], Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Appendix B: Traffic Management Work Session, Kentucky Transportation Center Mar 1987

Appendix B: Traffic Management Work Session, Kentucky Transportation Center

Kentucky's Annual Forum on Transportation

No abstract provided.


Remarks: R. D. Morgan, R. D. Morgan Mar 1987

Remarks: R. D. Morgan, R. D. Morgan

Kentucky's Annual Forum on Transportation

No abstract provided.


Consultants, Contractors, Locals: A Panel Discussion, Jim Youngquist, Russell Sights, Mike Miller, James Parsons, E. B. Gaither, Lewis N. Melton, Dean Blake, Henry Hinkle, James D. Scott Mar 1987

Consultants, Contractors, Locals: A Panel Discussion, Jim Youngquist, Russell Sights, Mike Miller, James Parsons, E. B. Gaither, Lewis N. Melton, Dean Blake, Henry Hinkle, James D. Scott

Kentucky's Annual Forum on Transportation

No abstract provided.


Tennessee Bridges The Gap, Clellon Loveall Mar 1987

Tennessee Bridges The Gap, Clellon Loveall

Kentucky's Annual Forum on Transportation

No abstract provided.


Remarks From Senator Helen Garrett, Helen Garrett Mar 1987

Remarks From Senator Helen Garrett, Helen Garrett

Kentucky's Annual Forum on Transportation

No abstract provided.


Construction Management And Engineering Work Session, Garey White, Paul Faulkner, R. R. Dawson Jr., Robert A. Walsburger Mar 1987

Construction Management And Engineering Work Session, Garey White, Paul Faulkner, R. R. Dawson Jr., Robert A. Walsburger

Kentucky's Annual Forum on Transportation

No abstract provided.


Traffic Management Work Session, Bruce Siria, Mike Hailperin, William Sampson, George A. Yates, Anthony J. Barry Mar 1987

Traffic Management Work Session, Bruce Siria, Mike Hailperin, William Sampson, George A. Yates, Anthony J. Barry

Kentucky's Annual Forum on Transportation

No abstract provided.


Local Roads Management Work Session, Otto Ingram, Freddie Goble, Donald K. Bryant Mar 1987

Local Roads Management Work Session, Otto Ingram, Freddie Goble, Donald K. Bryant

Kentucky's Annual Forum on Transportation

No abstract provided.


Outstanding Road Programs, C. Leslie Dawson Mar 1987

Outstanding Road Programs, C. Leslie Dawson

Kentucky's Annual Forum on Transportation

No abstract provided.


Remarks: Lt. General E. R. Heiberg, Iii, E. R. Heiberg Iii Mar 1987

Remarks: Lt. General E. R. Heiberg, Iii, E. R. Heiberg Iii

Kentucky's Annual Forum on Transportation

No abstract provided.


State And Local Government Reactions, Larry Hayes, Charles F. Haywood, Edwin L. Griffin, Prentice Harvey Mar 1987

State And Local Government Reactions, Larry Hayes, Charles F. Haywood, Edwin L. Griffin, Prentice Harvey

Kentucky's Annual Forum on Transportation

No abstract provided.


Remarks: Frank Shafroth, Frank Shafroth Mar 1987

Remarks: Frank Shafroth, Frank Shafroth

Kentucky's Annual Forum on Transportation

The conference date of this session should be March 19, 1987 instead of March 21, 1987.


Welcome [1987], Art Gallaher Jr., C. Leslie Dawson Mar 1987

Welcome [1987], Art Gallaher Jr., C. Leslie Dawson

Kentucky's Annual Forum on Transportation

No abstract provided.


From The Director... [1987], Calvin G. Grayson Mar 1987

From The Director... [1987], Calvin G. Grayson

Kentucky's Annual Forum on Transportation

No abstract provided.


Letter From Dr. Otis A. Singletary, Otis A. Singletary Mar 1987

Letter From Dr. Otis A. Singletary, Otis A. Singletary

Kentucky's Annual Forum on Transportation

No abstract provided.


Letter From C. Leslie Dawson, C. Leslie Dawson Mar 1987

Letter From C. Leslie Dawson, C. Leslie Dawson

Kentucky's Annual Forum on Transportation

No abstract provided.


Earth-Coupled Heat Pump Systems--Selection, Design & Performance, Larry W. Turner, Donald G. Colliver, W. E. Murphy Mar 1987

Earth-Coupled Heat Pump Systems--Selection, Design & Performance, Larry W. Turner, Donald G. Colliver, W. E. Murphy

Agricultural Engineering Energy Series

Rising energy costs have caused many people to look for more efficient ways to heat and cool their homes. One of the most energy-efficient systems to come along in recent years is the earth-coupled heat pump. Pioneered at the University of Kentucky in the 1950s, the earth-coupled system relies on the thermal capacity of water to transfer heat, whereas conventional heat pump relies on outside air. ln an earth-coupled system, water source heat pump is connected (or "coupled") to pipes in the ground or in wells for the source of heat in winter and cool air in the summer. In …


Summary Of Experimental Bridge Features, Theodore Hopwood Ii, James H. Havens, Edgar E. Courtney Mar 1987

Summary Of Experimental Bridge Features, Theodore Hopwood Ii, James H. Havens, Edgar E. Courtney

Kentucky Transportation Center Research Report

Experimental bridge features and service problems investigated during this study are reviewed. Those were epoxy-coated reinforcing steel, stay-in-place forms, experimental deck features (rotary compaction and broomed deck finishing), precast segmental bridges, steel-corrosion control methods (weathering steel and hot-dipped galvanizing), microsilica concrete, failures of masonry coatings, and failures of aluminum guardrail-retaining nuts.

Several features including latex and low-slump overlays, epoxycoated reinforcing steel, and broomed deck finishes (for state-built bridges), are now in common use. Most of the other experimental bridge features were performing satisfactorily. A corrosion problem was observed on one weathering steel bridge. Analyses of failures of masonry coatings and …


Acoustic Emission Monitoring Of Bascule Bridge Components, Theodore Hopwood Ii Mar 1987

Acoustic Emission Monitoring Of Bascule Bridge Components, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

During September 4-16, 1986, Kentucky Transportation Research Program (KTRP) personnel conducted a two-week inspection of welding operations on bascule bridge components for the Wisconsin Department of Transportation (WisDOT). Welding was performed by the Phoenix Steel Company at Eau Clair, Wisconsin. The inspection was conducted using acoustic emission (AE) monitoring on in-process welds.

KTRP investigative experience with AE weld monitoring and testing of bridges began in 1973. Since that date, KTRP has performed nine series of laboratory and fabrication shop weld monitoring tests and conducted 20 field tests of bridges using a series of increasingly sophisticated AE devices. Over the past …


Design And Performance Of Highway Shoulders, David Q. Hunsucker, Gary W. Sharpe, Robert C. Deen Mar 1987

Design And Performance Of Highway Shoulders, David Q. Hunsucker, Gary W. Sharpe, Robert C. Deen

Kentucky Transportation Center Research Report

This report summarizes finding of a long-term evaluation of the construction and performance of asphaltic concrete and portland cement concrete shoulders. Performance was used as the basis for the development of empirical criteria that permit the use of existing pavement thickness design procedures for the structural design of shoulders. Minimum thicknesses were determined on the basis of performance and review of literature.