|
RECENT
PUBLICATIONS
Compiled by Zac Ellis of FHWA's Office of Research and Technology Services
Below are brief descriptions
of the reports recently published by the Federal Highway Administration's (FHWA)
Office of Research, Development, and Technology. All the publications are available
from the National Technical Information Service (NTIS). In some cases, limited
copies of the publication are available from the Research and Technology (R&T)
Report Center.
When ordering from NTIS, include the NTIS PB number (or publication number)
and the publication title. You may also visit the NTIS Web site at http://www.ntis.gov
to order publications online. For customers outside the United States, Canada,
and Mexico, the cost is double the listed price. Address requests to:
National Technical Information
Service
5285 Port Royal Road
Springfield, VA 22161
Telephone: (703) 605-6000
Requests for items available
from the R&T Report Center should be addressed to:
RD&T Report Center,
HRTS
Federal Highway Administration
9701 Philadelphia Court, Unit Q
Lanham, MD 20706
Telephone: (301) 577-0906
For more information
on research and technology publications coming from FHWA, visit the Turner-Fairbank
Highway Research Center's (TFHRC) Web site at http://www.tfhrc.gov,
FHWA's Web site at http://www.fhwa.dot.gov,
or the OneDOT information network at http://dotlibrary.dot.gov/.
Assessment of Highway
Particulate Impacts: Phase I, Tasks B and C - Field Sampling and Evaluation
Program, Final Report
Publication No. FHWA-RD-99-181
This report is the second
of two reports developed as part of Phase I of the study. Researchers wanted
to investigate four sources of highway particulate emission: (1) emissions from
diesel-powered vehicles, (2) emissions from road sanding and salting operations,
(3) dust from paved roadways, and (4) emissions from unpaved roadways.
This document outlines the sampling and analysis plan for increasing the knowledge
related to particulate emissions from three of these sources. The document describes
the criteria used to select the field sampling sites, as well as the types of
analyses that were performed at those sites. In addition, this document describes
the results from the field work component of the study.
The NTIS number is PB99-175713; the cost is $33 for a paper copy or $17 for
the report on microfiche.
Assessment of Highway
Particulate Impacts: Phase I, Task A - Problem Evaluation, Final Report
Publication No. FHWA-RD-99-180
This work was performed
during the first phase of the study. The report provides an assessment of highway
particulate impacts. It evaluates the existing state of knowledge related to:
(1) what the sources of the particulates are, especially those specific to highways;
(2) methods of assessing particulate impacts from highway sources; (3) relationships
between highway-derived particulates and other particulate sources; (4) particulate
instrumentation, measurement, and monitoring methods; (5) assessment of potential
public health risks; and (6) control strategies for lessening the impact of
highway particulates.
Researchers evaluated sources, such as diesel and spark ignition engine emissions,
tire and brake wear, resuspensions from road sanding and salting operations,
and unpaved roads. Models evaluated included dispersion, source/receptor, and
emissions modeling.
The NTIS number is PB99-175705; the cost is $36 for a paper copy or $17 for
the report on microfiche.
Techniques for Measuring
Existing Long-Term Stresses in Prestressed Concrete Bridges,
Volume 2: Manual of Instruction
Publication No. FHWA-RD-99-179
In this study, researchers
evaluated various techniques for measuring stress. The evaluation included a
state-of-the-art review and analytical study of existing techniques.
Based on analytical results, researchers chose to evaluate the flat-jack direct
stress measurement technique in the laboratory and in field tests. An instruction
manual was written to describe the equipment and procedures required to obtain
reliable direct stress measurements. This manual outlines the equipment and
techniques used in taking stress measurement readings. In addition, techniques
for data analysis are explained.
The NTIS number is PB2000-100279; the cost is $25.50 for a paper copy or $12
for the report on microfiche.
Techniques for Measuring
Existing Long-Term Stresses in Prestressed Concrete Bridges,
Volume 1: Analytical, Laboratory, and Field Studies
Publication No. FHWA-RD-99-178
This volume summarizes the
analytical, laboratory, and field studies performed to evaluate the feasibility
of the flat-jack direct stress measurement technique to be used on prestressed
concrete bridges. Several strain relief methods, including boring and slitting
techniques, were evaluated by performing analytical studies. The flat-jack slitting
technique was determined to be the most promising.
The NTIS number is PB99-100278; the cost is $58 for a paper copy or $23 for
the report on microfiche.
LTPP Pavement Maintenance
Materials: SHRP Crack Treatment Experiment, Final Report
Publication No. FHWA-RD-99-143
The Strategic Highway Research
Program (SHRP) H-106 maintenance experiment and the FHWA Long-Term Monitoring
(LTM) of the Pavement Maintenance Materials Test Sites project studied two distinct
asphalt concrete (AC) crack treatments: transverse crack sealing and longitudinal
crack filling. Both activities are performed frequently to extend pavement life
by preventing or substantially reducing the infiltration of water into the pavement
structure.
The report documents the entire AC crack treatment study, including the installation
of 31 unique crack treatments at five different test sites, the laboratory testing
of experimental sealant/filler materials, and the seven-year performance monitoring
of the various crack treatments. It also discusses the results of comprehension
statistical analyses conducted on material performance and laboratory testing
data.
The NTIS number is PB2000-102371; the cost is $51 for a paper copy and $21 for
the report on microfiche.
LTPP Pavement Maintenance
Materials: SHRP Joint Reseal Experiment, Final Report
Publication No. FHWA-RD-99-142
Although joint resealing
is a common maintenance practice, premature seal failure happens frequently
and leads to additional repair and expense. The purpose of this study was to
address the merits and deficiencies of current joint resealing materials, designs,
and practices.
The study evaluated the relative performance of selected sealant materials and
the effect of selected sealant installation methods. The study also identified
sealant material properties and tests that correlate well with field performance.
This report documents the entire portland cement concrete joint resealing study,
including the installation of 31 unique joint seal treatments (i.e., combinations
of sealant material and installation method) at five different test sites, the
laboratory testing of experimental sealant materials, and the seven-year performance
monitoring of the various joint seal treatments.
The NTIS number is PB2000-102370; the cost is $41 for a paper copy or $17 for
the report on microfiche.
Galvanic Cathodic Protection
of Reinforced Concrete Bridge Members Using Sacrificial Anodes Attached by Conductive
Adhesives
Publication No. FHWA-RD-99-112
This is the final report
in a study to investigate the feasibility of using galvanic cathodic protection
(CP) of reinforced concrete bridge members using sacrificial anodes attached
by conductive adhesives.
Galvanic CP systems have the recognized advantages of simplicity and the potential
to operate with little or no maintenance for the life of the system. However,
applications have so far been limited to the seawater splash and tidal zone
where concrete is moist and conductive and where the anode surface is periodically
wetted. In this study, a new galvanic CP system was investigated in which sacrificial
anodes were attached to the concrete surface with ionically conductive adhesives
called hydrogels.
The NTIS number is PB99-175531; the cost is $27 for a paper copy or $12 for
the report on microfiche.
Optimization of Concretes
and Repair Materials for Corrosion Resistance
Publication No. FHWA-RD-99-096
A major cause of concrete
deterioration (cracking, delamination, and spalling) is the corrosion of embedded
steel reinforcement, initiated by chloride ions from deicing and saltwater spray
that have penetrated the concrete cover. The research was structured to address
the three principal-rate phenomena that control corrosion-induced deterioration
of concrete bridge components: (1) chloride permeation rate, (2) corrosion rate
of the steel bar, and (3) deterioration/damage rate.
The NTIS number is PB99-175564; the cost is $41 for a paper copy or $17 for
the report on microfiche.
Determination of Frost
Penetration in LTPP Sections, Final Report
Publication No. FHWA-RD-99-088
The main goal of the study
was to determine frost penetration at selected LTPP Seasonal Monitoring Program
sections. As part of the study, an interactive computer program, FROST, was
developed to facilitate the interpretation of the electrical resistivity and
temperature data. Analysis results include the freeze state at each electrical
resistivity sensor and the frost penetration at each site.
The NTIS number is PB2000-102952; the cost is $36 for a paper copy or $17 for
the report on microfiche.
Articles & Departments
The First Issue of Public Roads
IDAS Integrates ITS Into Planning Process
Turbo Architecture
Communities of Practice
Middle School Students Design Future Cities
The Partnership Initiative
An Australian Road Review
Advantages of the Split Intersection
One Mile in Five: Debunking the Myth
National Transportation Week
Annual Index
|
