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Articles 38581 - 38610 of 39763
Full-Text Articles in Engineering
A Theory Of Traffic Flow For Evaluation Of The Geometric Aspects Of Highways, Milton Edward Harr, G. A. Leonards
A Theory Of Traffic Flow For Evaluation Of The Geometric Aspects Of Highways, Milton Edward Harr, G. A. Leonards
JTRP Technical Reports
No abstract provided.
A Discussion On The Durability Of Expanded Shale Aggregate For Exposed Concrete Structures (Bridges), James H. Havens
A Discussion On The Durability Of Expanded Shale Aggregate For Exposed Concrete Structures (Bridges), James H. Havens
Kentucky Transportation Center Research Report
During the period between 1924 and 1934, in particular, numerous reinforced concrete bridges were built in Kentucky and elsewhere. Although many of them are still in service, they are some 30 years old and are showing the effects of time and weather. While it is true, of course, that they were constructed without the benefit of air-entrainment and without many present-day control practices, the influences of aggregate quality and freeze-thaw are usually apparent. The advent of the de-icing salt era, about 1940 and following World War II, introduced an additional deteriorating influence gnawing at old and new structures alike. The …
Handbook Of Facts And Figures On Indiana County Roads, Jean E. Hittle
Handbook Of Facts And Figures On Indiana County Roads, Jean E. Hittle
Indiana Local Technical Assistance Program (LTAP) Publications
This handbook will assist county road officials in the planning of county road operations. The data and information included in this handbook are either statistical or public information which are already available from the official sources, but which needed to be brought together for convenient distribution and use.
Irrigation And Drainage Problems In Uruguay, Jerald Emmet Christiansen
Irrigation And Drainage Problems In Uruguay, Jerald Emmet Christiansen
Reports
Synopsis: Uruguay irrigates about 65,000 acres, mostly rice (74%) and sugar cane (15%). Summer rainfall averages about 3.5 in. per month, but frequent droughts seriously affect both crops and livestock. Irrigation can be increased by storage in small reservoirs on tributary streams by means of low earth dams. Some areas will require flood control and draiange before intensive agriculture can be practiced.
Criteria For Design Of Pavement Thicknesses, Kentucky Interstate Highways, William B. Drake, James H. Havens
Criteria For Design Of Pavement Thicknesses, Kentucky Interstate Highways, William B. Drake, James H. Havens
Kentucky Transportation Center Research Report
The Kentucky Department of Highways, in 1946, sought a more systematic criteria and basis for designing the thickness of bituminous concrete pavements. The Research Division was authorized to pursue this work and to develop the criterion. These efforts were embodied in a report (1) to the Department, which offered a system of design based upon CBR's and EWL's. EWL's were computed originally for a 10-yr. period but this practice was revised in 1954, to encompass 20-yr. traffic (more realistic with respect to average road life). Then, in 1957, the Department requested a re-evaluation of the criteria from the standpoint of …
Experimental Paving Projects Using Curtiss-Wright’S Coal-Modified, Coal-Tar Binder [1960], James F. Hardyman
Experimental Paving Projects Using Curtiss-Wright’S Coal-Modified, Coal-Tar Binder [1960], James F. Hardyman
Kentucky Transportation Center Research Report
On April 7, 1959, the Curtiss-Wright Corporation announced the development of a new coal-based road paving binder, utilizing bituminous coal. This development was the result of their research program conducted in an effort to find new uses for coal and coal products. The basic principle used in preparing this bituminous binder was the digestion of powdered coal in coal tar and tar oils at temperatures of 500-600°F. By adjusting the proportions of tar, tar oils, and coal, binders could be prepared having penetration ranges comparable to asphalt cements. It was the intent of the developers that the modified binders be …
An Evaluation Of The Beggs Deformeter In Two-Dimensional Structural Analysis And An Investigation Of The Deformeter In Three-Dimensional Structural Analysis, Dwight F. Denton
An Evaluation Of The Beggs Deformeter In Two-Dimensional Structural Analysis And An Investigation Of The Deformeter In Three-Dimensional Structural Analysis, Dwight F. Denton
Civil Engineering ETDs
It was the purpose of this thesis to evaluate the Beggs deformeter in two-dimensional structural frames and then investigate the possible use in three-dimensional structural frames. It is intended in dealing with the subject to explain and describe the deformeter apparatus and verify the theoretical principle through actual structural model analysis.
An Investigation Of The Effects Of Pozzolans On New Mexico Concrete Aggregates, Harry W. Montgomery
An Investigation Of The Effects Of Pozzolans On New Mexico Concrete Aggregates, Harry W. Montgomery
Civil Engineering ETDs
It was the purpose of this investigation to determine some of the effects a pozzolan has on Portland cement concrete when New Mexico aggregates are used. The specific items investigated were (1) to determine the effects of a pozzolan on the alkali aggregate expansion in concrete; (2) to show the effect on the compressive strength of concrete and the tensile strength of mortar briquettes when part of the Portland cement is replaced with a pozzolan; (3) to determine whether or not the “Mason Jar Expansion Test” would give reliable results; and (4) to determine whether or not an aggregate, with …
Dust Control On Unpaved Roads - A Review Of Literature, D. G. Shurig
Dust Control On Unpaved Roads - A Review Of Literature, D. G. Shurig
Indiana Local Technical Assistance Program (LTAP) Publications
This review summarizes literature on available materials, their application, costs and relative effectiveness for laying road dust. The review was authorized by the HERPIC Board on August 27, 1959 for the purpose of assisting officials in controlling road dust on county roads.
Precast-Prestressed Concrete I-Beam Bridges, Paul H. Kaar, Alan H. Mattock
Precast-Prestressed Concrete I-Beam Bridges, Paul H. Kaar, Alan H. Mattock
Kentucky's Annual Forum on Transportation
No abstract provided.
Highway Impact Research: Origins, Aims, Directions, Robert H. Stroup, Eugene C. Holshouser, Louis Varga
Highway Impact Research: Origins, Aims, Directions, Robert H. Stroup, Eugene C. Holshouser, Louis Varga
Kentucky's Annual Forum on Transportation
No abstract provided.
"Kentucky's Bituminous Pavement Research On Modified Coal Tar", W. B. Drake
"Kentucky's Bituminous Pavement Research On Modified Coal Tar", W. B. Drake
Kentucky's Annual Forum on Transportation
No abstract provided.
"Asphalt Mix Designs", John M. Griffith, B. F. Kallos
"Asphalt Mix Designs", John M. Griffith, B. F. Kallos
Kentucky's Annual Forum on Transportation
No abstract provided.
"Signals And Lighting", Grover C. Ethington
"Signals And Lighting", Grover C. Ethington
Kentucky's Annual Forum on Transportation
No abstract provided.
"Channelization", W. G. Galloway
"Channelization", W. G. Galloway
Kentucky's Annual Forum on Transportation
No abstract provided.
"Traffic Patterns", K. B. Johns
"Traffic Patterns", K. B. Johns
Kentucky's Annual Forum on Transportation
No abstract provided.
"Findings And Recommendations Of The Sagamore Conference On Urban Highway Development", Alan M. Voorhees
"Findings And Recommendations Of The Sagamore Conference On Urban Highway Development", Alan M. Voorhees
Kentucky's Annual Forum on Transportation
No abstract provided.
"Design And Construction Coordinated With Electronic Computation", W. B. Carrington
"Design And Construction Coordinated With Electronic Computation", W. B. Carrington
Kentucky's Annual Forum on Transportation
No abstract provided.
"Construction Practices For Bridge Decks", Austin Griffith
"Construction Practices For Bridge Decks", Austin Griffith
Kentucky's Annual Forum on Transportation
No abstract provided.
"Maintenance Policy And Practices Of The Bureau Of Public Roads", Harold G. Tipton
"Maintenance Policy And Practices Of The Bureau Of Public Roads", Harold G. Tipton
Kentucky's Annual Forum on Transportation
No abstract provided.
"Problems In Highway Bridge Design, Fabrication And Erection", E. L. Durkee
"Problems In Highway Bridge Design, Fabrication And Erection", E. L. Durkee
Kentucky's Annual Forum on Transportation
No abstract provided.
"Methods For Selecting Roads For The Rural Secondary Program", L. A. Whitmer
"Methods For Selecting Roads For The Rural Secondary Program", L. A. Whitmer
Kentucky's Annual Forum on Transportation
No abstract provided.
"The Relation Of Rural Highways And Rural Secondary Highways To The County Road Program", James T. Sabel
"The Relation Of Rural Highways And Rural Secondary Highways To The County Road Program", James T. Sabel
Kentucky's Annual Forum on Transportation
No abstract provided.
Address [1960], Bert T. Combs
Address [1960], Bert T. Combs
Kentucky's Annual Forum on Transportation
No abstract provided.
"Highways And People", Ellis L. Armstrong
"Highways And People", Ellis L. Armstrong
Kentucky's Annual Forum on Transportation
No abstract provided.
Kentucky Highway Conference Program [1960], Kentucky Transportation Center
Kentucky Highway Conference Program [1960], Kentucky Transportation Center
Kentucky's Annual Forum on Transportation
No abstract provided.
Proposed Specification For Bridge Paints, James H. Havens
Proposed Specification For Bridge Paints, James H. Havens
Kentucky Transportation Center Research Report
On July 30, 1958, two proposed bridge paint system specifications were submitted by this Division for Department consideration. Since that time, there have been several discussion sessions between various paint industry, representatives, members of the Department Specifications Committee, and J. H. Havens, Assistant Director of Research. Mr. Havens has been requested by the Specifications Committee to re-write one of the specifications, BASIC LEAD SILICO-CHROMATE, OIL-ALKYD PAINT SYSTEMS FOR IRON AND STEEL STRUCTURES (BRIDGES), and to prepare an additional specification covering, PHENOLIC RESIN PENETRATING LIQUID PAINT SYSTEM FOR IRON AND STEEL STRUCTURES (BRIDGES).
Bituminous Concrete Pavement Surface Damage From Soil Action, James H. Havens
Bituminous Concrete Pavement Surface Damage From Soil Action, James H. Havens
Kentucky Transportation Center Research Report
During the last week of August, Mr. J. S. Riley, Supervisory Construction Engineer, Area D, called our attention to a unique problem which arose during the final dressing of the most recent extension of the New Circle Road in Fayette County. Because of the uniqueness of the situation, the memo is intended to be a record of the phenomenon observed and a report of our investigation and analysis of the circumstances related thereto.
Rockcastle (Pottsville) Conglomerate Sand Evaluation In Portland Cement Concrete, Milton Evans Jr.
Rockcastle (Pottsville) Conglomerate Sand Evaluation In Portland Cement Concrete, Milton Evans Jr.
Kentucky Transportation Center Research Report
In order to analyze the concrete making properties of a processed Pottsville Conglomerate Sand from Rockcastle County, Kentucky, several batches of portland cement concrete were made. Standard mixing control, strength, and durability tests as well as a short cut test to detect excessive expansion during curing were performed on the concrete. Control specimens were made utilizing an Ohio River Sand, typical for this area, as the fine aggregate. This sand which was acceptable by Kentucky Highway Department Specifications was produced by the Nugent Sand Company of Louisville, Kentucky. The sand was submitted for evaluation in this manner by the State …
Cold-Weather Concreting, Milton Evans Jr.
Cold-Weather Concreting, Milton Evans Jr.
Kentucky Transportation Center Research Report
In order to successfully place concrete in cold weather, certain established requirements must be met. The concrete must not be allowed to freeze, it must not be overheated by artificial means in an attempt to protect it from the cold, and proper curing conditions must be maintained during the period of protection to insure sufficient moisture for the cement to hydrate. Generally, temperatures of not less than 50°F and not more than 90°F are satisfactory. These temperatures must be maintained long enough for the concrete to develop sufficient strength to withstand freezing temperatures and to support the loads. Generally, concretes …