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Prevailing Saturation Flow Rate for Lane Groups in the District of Columbia

Published Date:

2014-12-18

Abstract:

The District of Columbia Department of Transportation seeks to determine its local base saturation flow rate (SFR), which will be used in the conduct of level of service analyses for signalized intersections. The first step in the process of determin...

File Type:

[PDF - 1.24 MB]

Added:

02/22/2021

Development of Rapid Pavement Repair Materials

Published Date:

2020-01-01

Abstract:

Being that pavement repair and construction represents a significant percentage of federal and state funding, new materials are being investigated to reduce cost and generate a more resilient material. The goal of the project is to develop cost-effec...

File Type:

[PDF - 18.43 MB]

Added:

02/22/2021

Driver Behavior at Malfunctioning Crossing and Emergency Notification System Sign Awareness

Published Date:

2021-02-01

Abstract:

The Federal Railroad Administration wants to better understand driver knowledge of and expectations for finding Emergency Notification System (ENS) signs at highway-rail grade crossings. A simulator study was designed where participants were exposed ...

File Type:

[PDF - 7.72 MB]

Added:

02/22/2021

Strengthening and Repair of Structural Concrete with a Fabric-Reinforced-Cementitious-Matrix (FRCM) [Volume II]: Field Studies

Published Date:

2020-01-01

Abstract:

With infrastructure continuing to age, technologies are being developed to strengthen structures as a more sustainable option than replacement. The use of fiber reinforced cementitious matrix (FRCM) strengthening systems is a promising new technology...

File Type:

[PDF - 9.23 MB]

Added:

02/22/2021

Performance of Synthetic Fiber-Reinforced Concrete with Adapted Rheology

Published Date:

2020-01-01

Abstract:

The main objectives of this project can be summarized as follows: 1. Optimize the SRA-fiber system of SCC and SWC mixtures to achieve superior performance, including properties, autogenous shrinkage, restrained shrinkage, mechanical properties (tensi...

File Type:

[PDF - 2.82 MB]

Added:

02/22/2021

Compacted Concrete Pavement

Published Date:

2020-01-01

Abstract:

Due to the increasing budget constraints and decreasing time in pavement construction, there has been renewed interest in exploring the application of cost-effective and rapid pavement construction techniques. Roller-compacted concrete (RCC) is a sti...

File Type:

[PDF - 13.54 MB]

Added:

02/22/2021

Strengthening and Repair of Structural Concrete with a Fabric-Reinforced-Cementitious-Matrix (FRCM) [Volume I]: Laboratory Studies

Published Date:

2020-01-01

Abstract:

Externally bonded fiber reinforced cementitious matrix (FRCM) for structural members was tested and evaluated as a new class of composite material for repairing and strengthening infrastructures. In comparison with fiber reinforced polymer (FRP) comp...

File Type:

[PDF - 4.81 MB]

Added:

02/22/2021

Application of VFC Mixtures in Rapid Pavement Construction

Published Date:

2020-01-01

Abstract:

The experimental work attesting the validity of the proposed mix design procedure was performed in both fresh and hardened states via a series of VFC (Vibration Free Concrete) mixes provided by other researcher in separate project. The test mixes wer...

File Type:

[PDF - 12.48 MB]

Added:

02/22/2021

Investigation On Thixotropy Of Vibration-Free Concrete Mixtures Intended For Rapid Pavement Construction [Volume II]

Published Date:

2020-01-01

Abstract:

This report discusses the advances and setbacks encountered when attempting to develop a vibration-free, selfconsolidating concrete for slipform applications. Such concrete would have significant advantages compared to conventional slipforming, as vi...

File Type:

[PDF - 4.68 MB]

Added:

02/22/2021

Activity Sequencing Logics Using Daily Work Report Data

Published Date:

2020-09-01

Abstract:

Accurate and reliable project duration estimation is highly dependent upon two major components; a) reasonable production rate estimation of major work items, and b) logical sequencing of those work items. The phase I of the study developed an MS Exc...

File Type:

[PDF - 2.21 MB]

Added:

02/22/2021

Investing in California’s Transportation Future: Public Opinion on Critical Needs

Published Date:

2020-12-01

Abstract:

In 2017, the State of California adopted landmark legislation to increase the funds available for transportation in the state: Senate Bill 1 (SB1), the Road Repair and Accountability Act of 2017. Through a combination of higher gas and diesel motor f...

File Type:

[PDF - 4.64 MB]

Added:

02/22/2021

Timber Crosstie Spike Fastener Failure Investigation: Field Evaluation of an Alternative Fastener [Research Results]

Published Date:

2020-11-01

Abstract:

The Federal Railroad Administration has sponsored the Rail Transportation and Engineering Center (RailTEC) at the University of Illinois at Urbana-Champaign (Illinois) to conduct a comprehensive investigation into timber crosstie spike fastener failu...

File Type:

[PDF - 529.90 KB]

Added:

02/22/2021

Accessibility, Experimentation, and the Evaluation of Transportation Developments for Disadvantaged Groups

Published Date:

1978-01-01

Abstract:

This study examines the methods used for evaluating transportation developments, particularly those for disadvantaged groups. Two methodological questions are examined: what measures characterize the social condition to be ameliorated, most effective...

File Type:

[PDF - 12.52 MB]

Added:

02/22/2021

Preliminary Report on Basic National Rail Passenger System

Published Date:

1970-11-01

Abstract:

The Rail Passenger Service Act of 1970 establishes a for-profit corporation to provide intercity rail passenger service. As a common carrier by rail, the Corporation will assume the public responsibility for carrying passengers previously vested In I...

File Type:

[PDF - 1.33 MB]

Added:

02/22/2021

Influence of Casting Conditions on Durability and Structural Performance of HPC-AR: Changes in Workability and Air-Void System of Concrete Due to Pumping

Published Date:

2020-01-01

Abstract:

This report summarizes the research performed on the influence of pumping operations on the changes in workability, rheology, air content, air-void system, freeze-thaw and scaling resistance of self-consolidating concrete (SCC). This project is a col...

File Type:

[PDF - 32.84 MB]

Added:

02/22/2021

Enhancing Performance of Fiber-Reinforced Concrete for Construction and Repair

Published Date:

2020-01-01

Abstract:

The overarching purpose of this research is development of knowledge and a novel technique to enhance properties of Eco-Bridge-Crete, FR-SCC and FR-SWC for higher crack resistance and improved flexural properties in construction and repair by taking ...

File Type:

[PDF - 2.57 MB]

Added:

02/22/2021

Updating the Texas Rainfall Coefficients and Enhancing the EBDLKUP Tool: Technical Report

Published Date:

2019-12-01

Abstract:

Currently, the Texas Department of Transportation (TxDOT) uses EBDLKUP-2015-V2.xls to estimate location-specific storm intensities for hydraulic design. This tool is based on storm frequency and duration data analyzed and summarized between 1998 and ...

File Type:

[PDF - 4.61 MB]

Added:

02/22/2021

Improvements to NCDOT’s Wetland Prediction Model (Phase II)

Published Date:

2020-03-03

Abstract:

This Final Report is to summarize several main achievements of this project as follows: (i) Method Development for Wetland Type Identification and Prediction; (ii) Wetland Type (Prediction) Automation Tool (WAMTAT) using LiDAR data for non-coastal ar...

File Type:

[PDF - 2.05 MB]

Added:

02/22/2021

Vehicle on Shoulder and Crash — Correlation or Causation?

Published Date:

2020-07-01

Abstract:

This study sought to evaluate the relationships between vehicles on shoulder, congestion, and crashes. Three pertinent datasets on interstates were obtained and then integrated using a spatiotemporal approach. The analysis showed that about 36% of th...

File Type:

[PDF - 6.12 MB]

Added:

02/22/2021

Social Justice Mitigation in Transportation Projects: Why and How Lexington Fayette Urban County Government Can Support the Lexington Community Land Trust’s Path to Self-Sustainability

Published Date:

2020-04-01

Abstract:

The city of Lexington has reached a critical shortage of affordable housing available to families earning 80% - 50% of area median income (AMI). This study focuses on how to grow the Lexington CLT into self-sustainability while also narrowing the aff...

File Type:

[PDF - 1.07 MB]

Added:

02/22/2021

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