United States. Federal Highway Administration. Office of Technology Applications
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1992-03-01
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In 1988, the Federal Highway Administration (FHWA) conducted a field survey (Demonstration Project No. 975, Permeable Base Design and Construction) of ten States (California, Iowa, Kentucky, Michigan, Minnesota, New Jersey, North Carolina, Pennsylvania, West Virginia, and Wisconsin) to determine design criteria and construction problems for buildin
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Intermodal Surface Transportation Efficiency Act of 1991; Evaluation of Low Volatile Organic Compound Coating Systems for Steel Bridges; Testing of a Concrete Sealer Using the Rapid Chloride Permeability Technique
The first objective of this report is to document SMA mixture design information obtained from Europe. Participants of the September 1990 European Asphalt Study Tour (EAST) recommended that SMA pavement technology be evaluated in the United States. The Federal Highway Administration (FHWA) has the responsibility of evaluating, promoting, and transf
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This report presents findings of a survey and laboratory evaluation of materials and techniques for cleaning and painting chloride-contaminated weathering steel bridges. Laboratory techniques suitable for field usage were developed for assessing the conductivity and chloride level of prepared surfaces. The following cleaning techniques were evaluat
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This report is part of a series of products from the 1990 Nationwide Personal Transportation Survey (NPTS). The NPTS dataset contains information about the amount and nature of personal travel in the U.S., as related to the demographics of persons and households. This report highlights the survey results with emphasis on comparing the 1990 data to
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This research study of pavement smoothness measurement was conducted in order to develop and implement an improved highway smoothness construction specification on asphalt concrete pavements. Achieving a higher level of smoothness on highways during construction results in savings to the taxpayer due to reduced wear and tear on vehicles, and longer
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This report is the first in a series produced for the Federal Transit Administration (FTA) and the Federal Highway Administration (FHWA) by the Volpe National Transportation Systems Center (Volpe Center). During August 6-8, 1991, representatives from FHWA Headquarters, Division, and Regional offices; FTA Headquarters and Regional offices; and the U
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United States. Federal Highway Administration. Office of Engineering
1992-02-01
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As more and more higher volume roads reach their terminal serviceability, it is becoming increasingly important to find ways that help extend pavement service life in the most cost effective manner. One way to accomplish this is through the increased use of relatively low cost surface rehabilitation techniques that help improve the functional condi
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The cone penetrometer test consists of pushing a series of cylindrical rods with a cone at the base into the soil at a constant rate of 2 cm/sec. Continuous measurements of penetration resistance on the cone tip and friction on a friction sleeve are recorded during the penetration. The Piezo-cone records pore pressures in addition to point and fric
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A dilatometer test consists of pushing a flat blade located at the end of a series of rods. once at the testing depth, a circular steel membrane located on one side of the blade is expanded horizontally into the soil. The pressure is recorded at three specific moments during the test. The blade is then advanced to the next testing depth. The design
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This study was conducted to determine the effects of short-term pavement markings on driver performance. Three different marking patterns were tested within the scope of this study: 2-ft stripes with 38-ft gaps (0.61-m stripes with 11.58-m gaps); 4-ft stripes with 36-ft gaps (1.22-m stripes with 10.97-m gaps); and 10-ft stripes with 30-ft gaps (3.0
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To achieve the goals of the Clean Air Act Amendments of 1990 (CAAA), State and local officials must first understand the requirements for transportation plans, programs, and projects. The Federal Highway Administration (FHWA) has prepared this brochure to explain in detail Title I of the CAAA, and selected parts of Title II. Technical terms are hig
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To achieve the goals of the Clean Air Act Amendments of 1990 (CAAA), State and local officials must first understand the requirements for transportation plans, programs, and projects. The Federal Highway Administration (FHWA) has prepared this brochure to explain in detail Title I of the CAAA, and selected parts of Title II. Technical terms are hig
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This document contains a discussion of the reasons why the project did not succeed. A detailed discussion of the steps taken by the Iowa Department of Transportation to make the experiment work are contained in this document, along with recommendations for future projects.
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