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Full-Text Articles in Engineering

High Friction Surface Treatment Initiatives By Indot: Spec Development, Joseph Bruno Mar 2019

High Friction Surface Treatment Initiatives By Indot: Spec Development, Joseph Bruno

Purdue Road School

In-House Project Design, Special Provision Specification, and Initial Test Results—Highfriction surface treatment (HFST) has been proactively utilized as a cost-effective solution to reducing vehicle crashes at curves across the country. As an initiative, INDOT is currently installing HFST at 26 locations statewide, mainly horizontal curves with high crash rates. This session consists of two presentations to share the information on the development, expected benefits, project design, and initial test results based on the HFST at these locations.


Latex Modified Concrete - Very Early Strength, Bobby Steele Mar 2019

Latex Modified Concrete - Very Early Strength, Bobby Steele

Purdue Road School

INDOT came out with specifications for a very early strength concrete to use on bridge deck overlays. This concrete is fast setting, which allows overlays to be performed over a weekend and benefits the traveling public with a short duration of traffic interference. Cure time to reach the strength requirement is 3 hours. E&B Paving performed the first application with the new spec on August 26, 2018. Many changes were also made to the INDOT Specification Section 722.


Rough Roads Ahead!?, Sarah Reed, Brooke Thomas, Jim Hellmann Mar 2019

Rough Roads Ahead!?, Sarah Reed, Brooke Thomas, Jim Hellmann

Purdue Road School

Have you ever found yourself in the public's cross-hairs when it is time to implement a few roadway improvements? Are you handicapped in your ability to describe the true value of community planning and economic development planning? Come hear from one dynamic trio with the ability to identify issues and opportunities that others might not see and work to uncover even more ways tin which we are better together.


Safety Improvements At Horizontal Curves, Joseph Bruno Mar 2019

Safety Improvements At Horizontal Curves, Joseph Bruno

Purdue Road School

This presentation highlights the progress INDOT has made in improving safety at horizontal curves by upgrading the signing and delineation and by applying high friction surface treatments at some locations. We will also discuss the MUTCD (Manual on Uniform Traffic Control Devices) requirements for signing horizontal curves and the approaching (December 31, 2019) FHWA target date for compliance.


Use Of Penetrating Asphalt Emulsions To Address High-Void Pavement Areas, Andrew Eicher, Curt Higginbotham Mar 2019

Use Of Penetrating Asphalt Emulsions To Address High-Void Pavement Areas, Andrew Eicher, Curt Higginbotham

Purdue Road School

Longitudinal joints are high in air voids due to compaction limitations. Lowering the void content of these areas improves the durability of the pavement. Project data indicate that rapid penetrating emulsion (RPE) fills the voids beneath the surface of the pavement, reducing air and water intrusion while maintaining surface texture, whereas traditional emulsions seal the surface only. Lab tests have been developed to quantify the penetrating ability of an emulsion and resistance to water exposure. Join us for a discussion.


Leveraging Telematics And Weather Data To Study The Productivity Of Roadside Mowers, Jijo K. Mathew, Matt Kraushar Mar 2019

Leveraging Telematics And Weather Data To Study The Productivity Of Roadside Mowers, Jijo K. Mathew, Matt Kraushar

Purdue Road School

Mowing activities are usually reported by daily work orders and it is difficult to obtain quantitative information characterizing the utilization and productivity of the mowing operations. This research uses telematics data from commercial sensors to track the daily activity of seven mowers in the Fort Wayne district. Weather data from NOAA was also captured to estimate the weather related delays. During a one-month period, the mowers collectively covered a total of around 1170 miles and an area of nearly 1800 acres of mowing. Crews worked alternative work schedules with extended hours four days a week. On an average 9.5 hour …


Assessing Slope Instabilities, Victoria Leffel, Joey Franzino Mar 2019

Assessing Slope Instabilities, Victoria Leffel, Joey Franzino

Purdue Road School

INDOT’s Geotechnical Services Section has recently implemented a slide ArcGIS Collector app to provide a systematic approach to collecting and managing unsafe or failed slopes/embankments needed for decision making. A brief background in Indiana landslide geology will be given, then we will review the process of how to inventory slopes through the Collector app and identify potentially hazardous slopes. The session will end with a discussion of current engineering practices INDOT is using to correct landslides.