Evaluation of Slope Stabilization Methods (US-40 Berthoud Pass)
Evaluation of Slope Stabilization Methods (US-40 Berthoud Pass)

Author: Michael Banovich

Publisher:

Published: 2002

Total Pages: 44

ISBN-13:

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In 1995 US 40 on the west side of Berthoud Pass had several cut and fill slopes that were the result of 1960s erosion control practices. Because the re-seeding and additional fertilization were done using standard materials and methods, no data were available on the performance of the mulches, tackifiers, and germination enhancers. Therefore, this report evaluates only the soil containment products used in three test sections of zone 1 and three test sections of zone 2. The fertilizers, tackifiers, and mulches originally used for this study are not evaluated.

Determining the Degree of Aggregate Degradation After Using the NCAT Asphalt Content Tester
Determining the Degree of Aggregate Degradation After Using the NCAT Asphalt Content Tester

Author: Randolph Reyes

Publisher:

Published: 1997

Total Pages: 142

ISBN-13:

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The purpose of the research conducted was to determine if aggregate degradation takes place and to measure the possible degree of degradation after bituminous mixtures are heated inside the NCAT Asphalt Content Tester. A study was conducted which compared the original aggregate blend (control specimens) to the residual aggregate blend (experimental specimens) obtained after several bituminous mixtures were heated inside the NCAT Asphalt Content Tester. The control specimens and the experimental specimens used to produce the bituminous mixtures were the result of an aggregate sample which was split three times. Two methods of analysis were used to review the gradation results.

Performance Evaluation of Various Corrosion Protection Systems of Bridges in Colorado
Performance Evaluation of Various Corrosion Protection Systems of Bridges in Colorado

Author: Yunping Xi

Publisher:

Published: 2004

Total Pages: 166

ISBN-13:

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Corrosion of reinforced concrete structures has been a significant problem for many state and transportation agencies since the application of deicing salts was introduced. Much research has been conducted to develop corrosion protection systems that can prolong the life span of reinforced concrete structures. The Colorado Department of Transportation (CDOT) has several routine and experimental measures to prevent corrosion of the rebar including epoxy-coated rebar, calcium nitrite admixture, organic corrosion inhibitors, a thick cover of quality concrete, and a waterproofing membrane covered by an asphalt overlay. An extensive literature review was performed to collect information on various corrosion protection systems that have been used in the U.S. and around the world. Current CDOT practices in terms of corrosion protection measures were reviewed. A draft inspection plan for Colorado's bridge structures was proposed.

Evaluation of Methodologies for Visual Impact Assessments
Evaluation of Methodologies for Visual Impact Assessments

Author: Craig Churchward

Publisher: Transportation Research Board

Published: 2013

Total Pages: 160

ISBN-13: 0309258863

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"TRB's National Cooperative Highway Research Program (NCHRP) Report 741: Evaluation of Methodologies for Visual Impact Assessments evaluates visual impact assessment (VIA) procedures, methods, and practices that satisfy or exceed National Environmental Policy Act (NEPA) and other requirements. The report documents VIA methodologies and approaches used in the United States and other countries, describes the decision making framework used to select specific VIA techniques for a given project, includes VIA best practice case studies from state departments of transportation, and highlights promising new developments in the field."--pub. desc.