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Articles 2671 - 2700 of 2858

Full-Text Articles in Engineering

The Irish Plumbing And Heating Engineer, March 1965 (Complete Issue) Mar 1965

The Irish Plumbing And Heating Engineer, March 1965 (Complete Issue)

Building Services Engineering

No abstract provided.


Accelerometer Method Of Riding-Quality Testing, Rolands L. Rizenbergs Feb 1965

Accelerometer Method Of Riding-Quality Testing, Rolands L. Rizenbergs

Kentucky Transportation Center Research Report

At a meeting of Highway Research Board Committee D-B4 last January, R. L. Rizenbergs presented an oral description of our development of the accelerometer method of measuring road roughness; and representatives from several state highway departments expressed an interest in duplicating our instrumentation. It became incumbent upon us then to prepare a more formal description for distribution to the Committee and other interested parties. The report submitted herewith is intended to fulfill that purpose. No specific action is requested. Copies are furnished for information only.


Construction And Interim Performance Of Silica Sand-Asphalt Surfacing, Robert L. Florence Feb 1965

Construction And Interim Performance Of Silica Sand-Asphalt Surfacing, Robert L. Florence

Kentucky Transportation Center Research Report

The report submitted herewith emanates from continuing efforts to develop sand-asphalt surfacing to a high degree of perfection and as a possible alternative to Class I, Type A, bituminous concrete surfaces. This type of surface excels in skid-resistance and may evolve as a preferred method of surface renewal and de-slicking for worn pavements which are otherwise structurally substantial. This report is concerned principally with observations afforded by the aforenamed, State construction project; it is, in that sense, an interim report.


The Irish Plumbing And Heating Engineer, February 1965 (Complete Issue) Feb 1965

The Irish Plumbing And Heating Engineer, February 1965 (Complete Issue)

Building Services Engineering

No abstract provided.


Experimental Concrete Pavement Containing Fly Ash Admixtures [1965], Ronald D. Hughes Jan 1965

Experimental Concrete Pavement Containing Fly Ash Admixtures [1965], Ronald D. Hughes

Kentucky Transportation Center Research Report

A 2.388-mi section of four-lane highway in Louisville, Ky., was selected for an experimental fly ash concrete pavement installation. The project was divided into three sections: a control section and two experimental sections containing 94 and 140 lb of fly ash per cubic yard, respectively. The solid-volume of fly ash in excess of that required to replace one sack of cement was considered as fine aggregate. The water was adjusted to provide a slump of approximately 2½ in., and an air-entraining admixture was proportioned at the mixer to provide an air content of approximately 4.5 percent.

Beams and cylinders were …


The Irish Plumbing And Heating Engineer, January 1965 (Complete Issue) Jan 1965

The Irish Plumbing And Heating Engineer, January 1965 (Complete Issue)

Building Services Engineering

No abstract provided.


The Irish Plumbing And Heating Engineer, December 1964 (Complete Issue) Dec 1964

The Irish Plumbing And Heating Engineer, December 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Experimental Feature, Construction Project F 160(10), U.S. 127, Mercer County, Experimental Guardrail Installations And Performance Studies, James H. Havens Nov 1964

Experimental Feature, Construction Project F 160(10), U.S. 127, Mercer County, Experimental Guardrail Installations And Performance Studies, James H. Havens

Kentucky Transportation Center Research Report

The report submitted herewith pertains to an experimental installation of aluminum guardrails which was completed in February, 1963. Progress reports, as required by PPM's 60-2 and 50-1.1, have been pending since the project began; however, all of the eligible information has been combined into the current report. Of course, long-time performance histories cannot yet be documented; and, for that reason, the report is considered to be interim rather than final.


Use Of Kentucky Rock Asphalt For De-Slicking Purposes, James H. Havens Nov 1964

Use Of Kentucky Rock Asphalt For De-Slicking Purposes, James H. Havens

Kentucky Transportation Center Research Report

According to Joe Creason's report appearing in the Courier-Journal June 23, 1957 (copy attached), the Kentucky Rock Asphalt Company elected, June 14, 1957, to liquidate. Among the assets was a stockpile of material which was valued at $197,000 (I recall that the stated price, F.O.B. Sweden, in 1955 was $7.00 per ton); this calculates to be 28,140 tons-- which is a small quantity in comparison to the gross production (200,000 to 275,000 tons; $1.2 to $1.75 million) during some prior years. Apparently 1956 was the last year of sales, and I believe that Kentucky was the sole purchaser. Perhaps as …


The Irish Plumbing And Heating Engineer, November 1964 (Complete Issue) Nov 1964

The Irish Plumbing And Heating Engineer, November 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Construction Of A Class I, Type A Surface Containing Paradise Slag Aggregate (Experimental) Drakesboro-Paradise Road (Ky 176), Robert L. Florence Oct 1964

Construction Of A Class I, Type A Surface Containing Paradise Slag Aggregate (Experimental) Drakesboro-Paradise Road (Ky 176), Robert L. Florence

Kentucky Transportation Center Research Report

The Drakesboro-Paradise Road (KY 176), extending 2.84 miles from its junction with KY 70 at Drakesboro to a point on KY 176 approximately 1.8 miles southwest of Paradise, was surfaced in early August with a 1 1/4-in, course of Class I, Type A bituminous concrete containing 40 percent wet-bottom-boiler slag from the T.V.A. power plant at Paradise, Kentucky. The use of the slag was on an experimental basis, and the objective was to determine the feasibility of utilizing the slag as an anti-skid aggregate in other, high-type,bituminous surfacing in that area. A laboratory investigation preceded the field experiment, and the …


Manufactured (Crushed), Limestone, Fine Aggregate For Portland Cement Concrete, James H. Havens Oct 1964

Manufactured (Crushed), Limestone, Fine Aggregate For Portland Cement Concrete, James H. Havens

Kentucky Transportation Center Research Report

Manufactured (crushed), limestone, fine aggregate for use in structural concrete, concrete base courses for pavements, or as may otherwise be designated, shall be manufactured by crushing and sizing aggregate-quality limestones and dolomites. Manufactured (crushed), limestone, fine aggregate shall not be used in concrete surface courses for pavements or bridge decks unless specifically authorized by the Engineer.


The Irish Plumbing And Heating Engineer, October 1964 (Complete Issue) Oct 1964

The Irish Plumbing And Heating Engineer, October 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


The Irish Plumbing And Heating Engineer, September 1964 (Complete Issue) Sep 1964

The Irish Plumbing And Heating Engineer, September 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


The Irish Plumbing And Heating Engineer, August 1964 (Complete Issue) Aug 1964

The Irish Plumbing And Heating Engineer, August 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Use Of Preformed, Compressed, Neoprene Seals In Joints Of Concrete Bridge Decks, Ronald D. Hughes Jul 1964

Use Of Preformed, Compressed, Neoprene Seals In Joints Of Concrete Bridge Decks, Ronald D. Hughes

Kentucky Transportation Center Research Report

Two types of seals are proposed for installation in contraction and construction joints in Ramp A, Ramp B, and the Main-Line structures from Third Street to Preston Street on Project I64-2(24)4, Jefferson County. The majority of contraction and construction joints are to be sealed with the preformed, compressed, neoprene seals. Specific joints in each structure will be sealed with cold-applied, elastomeric-type, joint-sealing compound; and these will be used as control joints for evaluation of the preformed, compressed, neoprene seals. Installation of all seals will be observed, and inspections will be made periodically. The performance of mastic-type sealants in joints in …


The Irish Plumbing And Heating Engineer, July 1964 (Complete Issue) Jul 1964

The Irish Plumbing And Heating Engineer, July 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Kentucky Rock Asphalt, Traffic-Bound Bases, George R. Laughlin Jun 1964

Kentucky Rock Asphalt, Traffic-Bound Bases, George R. Laughlin

Kentucky Transportation Center Research Report

Kentucky rock asphalt (a medium-grained quartz sandstone impregnated with natural bitumen) occurs as major deposits in Edmonson, Grayson, Hardin, Breckinridge, Logan and Warren Counties. Physiographically these deposits occur along the southeastern margin of the Western Coal Field. Geologically the Caseyville formation (particularly the Bee Spring member) of the Pottsville series of the Pennsylvania strata and the Hardinsburg and Cypress sandstones of the Middle Chester series of the Mississippian strata are of interest. The areal geology of Kentucky is shown in Figure 1 and the locations of rock asphalt deposits are depicted in Figure 2.


The Irish Plumbing And Heating Engineer, June 1964 (Complete Issue) Jun 1964

The Irish Plumbing And Heating Engineer, June 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Performance Of Initial Treatments, Constructed During 1963, James H. Havens, Robert L. Florence May 1964

Performance Of Initial Treatments, Constructed During 1963, James H. Havens, Robert L. Florence

Kentucky Transportation Center Research Report

Seventeen initial bituminous treatment projects were advertised for bids during 1963, which permitted bituminous concrete Class I Surface (hot-mix) as an alternate to Class C-1 Surface (road-mix). The hot-mix surface course was to contain a minimum of 6 percent PAC-9. Eleven of the contracts, totaling 38.841 miles in length, were awarded as hot-mix; and the remaining six contracts, totaling 18.12 miles in length, were awarded as road-mix.


Final Construction And Interim Performance Report: Experimental Use Of Thermoplastic Pavement-Striping Materials, James H. Havens, John W. Scott May 1964

Final Construction And Interim Performance Report: Experimental Use Of Thermoplastic Pavement-Striping Materials, James H. Havens, John W. Scott

Kentucky Transportation Center Research Report

The purposes and objectives of this study are: 1) to evaluate the application and performance characteristics of hot-melt plastic, pavement-striping materials which are presently prominent and known commercially as "Catatherm" and "Perma-Line"; 2) to compare the performance of these materials with the performance of painted stripes applied and re-newed according to the current practices of the Kentucky Department of Highways; and 3) to evaluate the economics of these striping materials in terms of cost-per-pile per-day-of-useful-life. The project is described more fully in the "Proposal..." (approved by Division Engineer, September 7, 1962) and in Report No. 1 (Pre-Construction Report) submitted September …


The Irish Plumbing And Heating Engineer, May 1964 (Complete Issue) May 1964

The Irish Plumbing And Heating Engineer, May 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Weighing Vehicles In Motion [1964], College Of Engineering, University Of Kentucky Apr 1964

Weighing Vehicles In Motion [1964], College Of Engineering, University Of Kentucky

Kentucky Transportation Center Research Report

This report describes the construction, installation, testing and performance analysis of three types of dynamic electronic scales; the Taller-Cooper, a commercially developed four load cell scale, the Broke Bridge, an adaptation of a German prototype employing two load cells and the Bean Type Scale, an experimental prototype that uses a pair of instrumented aluminum beams as the weight sensors.


The Irish Plumbing And Heating Engineer, April 1964 (Complete Issue) Apr 1964

The Irish Plumbing And Heating Engineer, April 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


Kentucky Highway Research Program, James H. Havens, Robert C. Deen Apr 1964

Kentucky Highway Research Program, James H. Havens, Robert C. Deen

Kentucky Transportation Center Research Report

No abstract provided.


Inspection Of Salt-Treated Granular Bases, Multiple Seals, District 8, James H. Havens, Robert L. Florence Mar 1964

Inspection Of Salt-Treated Granular Bases, Multiple Seals, District 8, James H. Havens, Robert L. Florence

Kentucky Transportation Center Research Report

No abstract provided.


The Irish Plumbing And Heating Engineer, March 1964 (Complete Issue) Mar 1964

The Irish Plumbing And Heating Engineer, March 1964 (Complete Issue)

Building Services Engineering

No abstract provided.


A Study Of The Effects Of Quick Freezing On Saturated Fragments Of Rocks, John W. Scott, George R. Laughlin Feb 1964

A Study Of The Effects Of Quick Freezing On Saturated Fragments Of Rocks, John W. Scott, George R. Laughlin

Kentucky Transportation Center Research Report

Quick freezing of a fragment of rock which is fully saturated with water is, perhaps, the most rigorous of all tests for soundness, durability, or resistance to weathering. So-called soundness or quality tests employed currently, or heretofore, for evaluating concrete aggregates are usually less rigorous inasmuch as the state of saturation at the outset of freezing is not at a critical level. Hence, the number of freeze-thaw cycles endured by a rock specimen undergoing freezing and thawing in the presence of available water may merely reflect the duration of the exposure before the rock becomes vulnerable to damage -- i.e., …


A Laboratory Investigation Of The Properties Of Coal-Bitumen Paving Mixtures, Gary Grant Howard Feb 1964

A Laboratory Investigation Of The Properties Of Coal-Bitumen Paving Mixtures, Gary Grant Howard

Kentucky Transportation Center Research Report

The principal objective of this study was to investigate the feasibility of using coal, and to a lesser extent coal mine wastes, as aggregate in bituminous paving mixtures. These local aggregates were laboratory tested in bitumen-aggregate mixtures and, more particularly, in so-called cold-mixes. The bitumen-aggregate mixtures were evaluated by the Immersion-Compression Test, ASTM D 1075-60, with modifications for cold mixtures recommended in the Public Roads Journal (4).

In this initial study, since it was not possible to evaluate all types of mixtures, the primary question of whether coal and its waste products can be used as road aggregate could not …


The Irish Plumbing And Heating Engineer, February 1964 (Complete Issue) Feb 1964

The Irish Plumbing And Heating Engineer, February 1964 (Complete Issue)

Building Services Engineering

No abstract provided.