Digital Commons Network^™

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 …

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 …

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

Densely-Graded Aggregate Base, William B. Drake

Kentucky Transportation Center Research Report

No abstract provided.

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 …

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 …

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 …

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.

Report Of Engineering Research With Recommendations For Strengthening The Program, Vaughn E. Hansen

Reports

Progress of Engineering Research: The growth initiated with the reorganization of the Engineering Experiment Station in 1957-58 has been stready and consistant through 1958-59. Every sign points to continued expansion through the coming year. This growth is shown in Table 1. The number of active projects this year has increased to nineteen, the funds allocated for Engineering research were $53,861 plus $17,826 to contract research, exclusive of approximately $75,000 in the Agricultural Experiment Station. The number of staff members engaged in research is now twelve. Contract research money has been obtained to finance four projects which were financed previously with …

Re-Evaluation Of The Kentucky Flexible Pavement Design Criterion, William B. Drake, James H. Havens

Kentucky Transportation Center Research Report

Prior to 1948, the criterion in Kentucky for designing the thickness of bituminous pavements was based upon a modified laboratory CBR and the 1942 curves developed by the California Department of Highways. In 1948, the Materials Research Laboratory reported: "An Investigation of Field and Laboratory Methods for Evaluating Sub-grade Support in the Design of Highway Flexible Pavement." Included in that report as a recommended method of thickness design for use in Kentucky was a set of curves based upon an empirical relationship between minimum laboratory CBR and observed pavement performance. These five curves accounted for traffic groups up to 10,000,000 …

Triaxial Testing Of Bituminous Mixtures : Technical Report, William Harner Goetz, James Hamilton Schaub

JTRP Technical Reports

No abstract provided.

17-Year Report On The Owensboro-Hartford Co-Operative Investigation Of Joint Spacing In Concrete Pavements, Milton Evans Jr., William B. Drake

Kentucky Transportation Center Research Report

In 1940, the Kentucky Department of Highways constructed an experimental concrete pavement which was one of a group of six built in co-operation with the Bureau of Public Roads by the States of Minnesota, California, Kentucky, Michigan, Missouri and Oregon. The purpose of these projects was to study and evaluate the performance of such pavements over a period of years with specific regard to types of joints and spacings. The Kentucky project, consisting of 6.27 miles, was constructed in Daviess County, beginning approximately 6 miles south of Owensboro on US Route 231 (formerly Ky. Route 71).

This report is a …

The Effects Of Freezing And Thawing On Pre-Stressed Concrete, Fouad Elyas Musleh

JTRP Technical Reports

No abstract provided.

Laboratory Research On Pavements Continuously Reinforced With Welded Wire Fabric, Martin J. Gutzwiller, Joseph Lee Waling

JTRP Technical Reports

No abstract provided.

Hydraulics Of River Flow Under Arch Bridges: A Progress Report : Technical Paper, H. J. Owen, Attila Arpad Sooky, S. T. Husain, J. W. Delleur

JTRP Technical Reports

No abstract provided.

The Effects Of Freezing And Thawing On Prestressed Concrete : Technical Paper, Fouad Elyas Musleh, Martin J. Gutzwiller

JTRP Technical Reports

No abstract provided.

An Analysis Of High Accident Rates : Technical Paper, Harlan H. Blindauer, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Studies Of Limestone Aggregates By Fluid-Flow Methods : Technical Paper, William Lee Dolch

JTRP Technical Reports

No abstract provided.

Application Of The Hveem Stabilometer To The Testing Of Open-Graded Bituminous Mixtures, R. A. Hannan

JTRP Technical Reports

This laboratory investigation was conducted with the purposeof determining the applicability of the Hveem Stabilometer to the testing of open-graded bituminous mixtures.

The study was divided into two major sections. The first of these investigated the validity of the Stabilometer displacement measurement when applied to open-graded specimens having large surface air voids. The second portion of the study had two specific purposes: (l) to investigate the stress-strain characteristics of open-graded mixturestested in the Hveem Stabilometer and (2) to determine whether surface voids on the ends of Stabilometer test specimens influenced Hveem stability values.

To check the validity of the displacement …

Further Studies Of Deleterious Substances In Indiana Aggregates : Progress Report No. 2, Robert Lee Schuster

JTRP Technical Reports

No abstract provided.

The Determination Of Potassium In Cement With Tetraphenylboron, William Lee Dolch

JTRP Technical Reports

No abstract provided.

The Feasibility Of Measuring The Moisture Gradients In Concrete Pavement Slabs: Progress Report No. 2, J. Richard Bell

JTRP Technical Reports

No abstract provided.

A Laboratory Investigation Of The Phenomenon Of Friction As Applied To Fine-Textured Bituminous Paving Mixtures, Jack E. Stephens

JTRP Technical Reports

No abstract provided.

Annual Report Of The Assistant Director, 1958-1959, Harold L. Michael

JTRP Technical Reports

No abstract provided.

Estimation Of Highway Needs For County Primary Road Systems By Sample Survey Methods, Donald O. Covault, Harold L. Michael

JTRP Technical Reports

No abstract provided.

The Effect Of Density On The Repeated-Load Strength Properties Of Bituminous Concrete, J. H. Dennis

JTRP Technical Reports

No abstract provided.