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The Use Of Epoxy Resin For Sealing Cracks In A Reinforced Concrete Bridge, Milton Evans Jr.

Kentucky Transportation Center Research Report

In the summer of 1958, a special formulation of epoxy resin was used to seal hairline cracks in the safety walks of the Levisa-Fork bridge at Paintsville, Kentucky. This bridge, a reinforced concrete box girder-type, Fig. 1, developed fine cracks soon after the falsework was removed. The cracks which were typically like those in Figs. 2 and 3, occurred in two areas, each extending about 30 ft. on either side of the center piers. They were through the full depth of the slab and ranged from about .005 in. to .031 in. in width. In all, there were 55 cracks …

The Design Of Thin, Silica Sand-Asphalt, Wearing Surfaces For Highways And Bridges, Robert L. Florence

Kentucky Transportation Center Research Report

This study was performed at the Highway Materials Research Laboratory in Lexington, Kentucky. In this study the various sands were combined with a sphalt cement of penetration 60 to 70 and tested by the Marshall method to determine the physical characteristics of the mixtures. Other variables investigated were the hardness of the asphalt cement and the amount of mineral filler. A coefficient of friction was determined, by means of a laboratory testing device, for each of the mixtures.

Due to the promising results of the laboratory testing, and the successful re-surfacing of bridges with silica sand-asphalt mixtures in the New …

A Study Of The Application Of Digital Computers For Controlling Vehicle Traffic At A Signalized Intersection, John V. Wait

Civil Engineering ETDs

This study outlines a method whereby a small, specialized "on-line" digital computer could be used to control urban vehicle traffic at a signalized intersection. In the basic system proposed, the computer uses as input data a "history" of the instantaneous vehicle flow, in terms of number of cars arriving and arrival time. The data are stored for a period of 240 seconds in a magnetic drum memory. Once each 1/2 second, the computer examines the arrival pattern of cars and compares the delay being imposed on the waiting cars versus the delay which would be imposed on the cars on …

Densely-Graded Aggregate Base, William B. Drake

Kentucky Transportation Center Research Report

No abstract provided.

A Traffic Study And Comprehensive Transportation Plan For Palm Beach County, Florida, Division Of Traffic & Planning Florida State Road Department, Board Of County Commissioners Palm Beach County Florida

City and Regional Planning -- Florida

A traffic and transportation plan for Palm Beach County, Florida June 1, 1959

Lean Concretes Using Kentucky's Dense Graded Aggregate (Portland Cement And Ss-1 Emulsified Asphalt), James H. Havens, Milton Evans Jr.

Kentucky Transportation Center Research Report

Since the development of dense-graded aggregate base in Kentucky about 1952, there have been various conjectures about "auto-cementations" or "setting" of these materials when compacted and cured. In some cases, particularly when the material was limestone, they have developed rather surprising strengths, in the field as well as in the laboratory. Such displays of strength seem to be directly associated with curing (slow drying) and the possibility of re-deposition of small amounts of dissolved calcium carbonate as cement. If this is so, it might be surmised that bases which have not been "fixed" by curing and drying before surfacing may …

The Effect Of Thermal Treatment On The Engineering Properties Of Clays, George R. Laughlin

Kentucky Transportation Center Research Report

Of the cohesive soils the property of plasticity is usually of the most concern to the engineer. The clay minerals rather than the clay size material present in a soil determine the degree and magnitude of plastic properties. In turn, the plasticity of the clay minerals varies according to their mineralogy and particle size. Of the various types of clay minerals present in a soil, only kaolinite, illite and montmorillonite occur in sufficient abundance to be of general engineering significance.

Much prior work has been performed to alter these plastic properties of clay soils. This has been accomplished in some …

The Plastic Design Of Steel Cofferdam, Robert O. Disque

Theses

The fundamental purpose of this thesis is to employ the plastic theory in the design of a hypothetical steel sheet pile cofferdarm. Prior to undertaking this work, the author had had no previous experience with the plastic theory. Therefore, a portion of this thesis is devoted to the development of the fundamentals necessary for the actual design computations.

The theory of plastic analysis has been used as far back as the 1920's in Hungary for the structural design of apartment buildings. It is, however, only in recent years that the theory has been utilized to a significant degree in this …

Shear Strength Of Simply Supported Prestressed Concrete Beams Having Web Enforcement, Randolph E. Holt

Civil Engineering ETDs

The problem of shear strength in pre-stressed concrete beams is analogous to that in ordinary reinforced concrete, since there is very little difference between reinforced concrete and pre-stressed concrete beams in the cracked condition. Until very recently, the knowledge of the shear strength of reinforced concrete members and pre-stressed concrete members was wholly statistical. Developments in the last few years have advanced it to the semi-empirical level, ^5,6,7 but our knowledge of the effect that shear has on the ultimate strength of reinforced and pre-stressed concrete members is still far from complete.

The Identification Of Montana Clays By X-Ray Analysis, David Stephen Malyevac

Bachelors Theses and Reports, 1928 - 1970

The purpose of this study is to identify the various Montana clay minerals by means of X-ray diffraction. The ultimate aim of this investigation is to identify the different clay mixtures through an analysis of their respective diffraction patterns, and diffraction patterns obtained after various chemical and thermal treatments.

Progress Report On Calcium Chloride Maintained Traffic Bound Roads, George R. Laughlin

Kentucky Transportation Center Research Report

The object of this study is to evaluate the effectiveness of calcium chloride in maintaining traffic-bound roads. Various theses propose that the use of calcium chloride will minimize the loss of granular material from the base by reducing attrition and dusting; thereby aiding in stabilization. Such theses further suggest that when the proper amount of binder or soil mortar is present, calcium chloride will preserve a more uniform moisture condition within the soil-mortar and thus hold the aggregate in place and in a more stable condition. The primary purpose of the study is not to test these theses, but rather …

The Effect Of Capillary Bleeding On The Compressive Strength Of Concrete, James L. Cramer

Civil Engineering ETDs

The purpose of this study was to determine the effect that bleeding has upon the compressive strength of concrete. Keeping in mind that the compressive strength of a concrete depends highly upon the water, cement ratio, it was reasonable to expect that the changing of the water content of the fresh concrete by bleeding would have a definite effect on the final compressive strength. While tests upon tests and studies upon studies have been made of cement and concrete, few, if any, have been concerned with this problem.

Discussion Of Manufactured Stone Sand, James H. Havens

Kentucky Transportation Center Research Report

No abstract provided.

Dense Graded Aggregate Base Development, William B. Drake

Kentucky Transportation Center Research Report

No abstract provided.

"Highway Research And User Benefit Analysis", M. Earl Campbell

Kentucky's Annual Forum on Transportation

No abstract provided.

"The Aasho Highway Research Project", William N. Carey

Kentucky's Annual Forum on Transportation

No abstract provided.

The Development Of A State-Wide Freeway System, Richard M. Zettel

Kentucky's Annual Forum on Transportation

No abstract provided.

"Legal Problems Of Right-Of-Way Acquisition", Charles E. Skidmore

Kentucky's Annual Forum on Transportation

No abstract provided.

Summary Of Findings Of First International Skid Prevention Conference, Jack H. Dillard

Kentucky's Annual Forum on Transportation

No abstract provided.

"Economic Impact Of Traffic Congestion On The Business Of A City", K. P. Vinsel

Kentucky's Annual Forum on Transportation

No abstract provided.

"Department Of Highways Assistance Available In Establishing City Traffic Patterns", William Galloway

Kentucky's Annual Forum on Transportation

No abstract provided.

"Current Urban Design Standards", J. C. Cobb

Kentucky's Annual Forum on Transportation

No abstract provided.

"Construction Of An Interstate Highway Project", John Avent

Kentucky's Annual Forum on Transportation

No abstract provided.

"Compaction Of Asphaltic Concrete", J. J. Laing

Kentucky's Annual Forum on Transportation

No abstract provided.

The Two New Interstate Bridges Across The Ohio River At Louisville, Kentucky, John H. Clark Iii

Kentucky's Annual Forum on Transportation

No abstract provided.

"The Theoretical Background Of Impact Factors For Highway Bridges", Hans Gesund

Kentucky's Annual Forum on Transportation

No abstract provided.

"The Influence And Function Of The Electronic Computer In Bridge Design", B. C. Fairchild, F. E. Staten

Kentucky's Annual Forum on Transportation

No abstract provided.

"Public Relations At The Local Levels", Bob Cox

Kentucky's Annual Forum on Transportation

No abstract provided.

"Serious Problems Created By The Numerous Sub-Standard County Bridges", T. J. Hopgood

Kentucky's Annual Forum on Transportation

No abstract provided.

"Pressure Treated Wood For Highway Construction", C. Miles Burpee

Kentucky's Annual Forum on Transportation

No abstract provided.