Materials and Construction

Materials and Construction

The Purpose and Design of Tying Joints On Stromsewers and Culverts

See Standard Plate 3145. What is the purpose of pipe ties? Does the current design serve the purpose? . Std Plate 3145 has relatively minimal requirements in that it allows a U-bolt, no provision is made for bell of Design 3006 joint, and primer instead of galvanizing is allowed. The Cretex Pipe Tie is similar to the MnDOT Single Connection Tie. It also does no show bell of gasketed pipe joins less than 84” diameter. ...more »

Submitted by (@alan.rindels)
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Idea Submitted by : Alan Rindels

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Metro District

Idea Champion - Who at MnDOT/LRRB? : Alan Rindels Metro District and MnDOT Bridge Office???

Why is this a priority and what are the benefits for the State/County/City? :

The current standard plate pipe ties do not work for strorm sewers with gasketed joints which Metro District uses. Stormsewers are observed with the bottom joint rotated out and thus the pipe ties do not appear to be functioning very well. Is it possible a different design will work better?

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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Materials and Construction

Performance-based Tack Coat Specification

Functional and structural HMA overlays are widely used pavement preservation technique, where interface bonding can be one of the most important factors affecting the performance. Interface bonding is affected by various factors, including material, application, texture, and other environmental conditions. Tack coat plays a significant role considering low cost and potential damages caused by the premature failure of ...more »

Submitted by (@hyung.ahn)
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Idea Submitted by : Hyung Jun Ahn and Dave Van Deusen

List your MnDOT Office,District,City, County, Univ. or Other : OMRR

Idea Champion - Who at MnDOT/LRRB? : Jeffrey Brunner

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Research

Idea Status (this will be updated by the moderator) : Need Statement #492

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Materials and Construction

Longitudinal Joint adhesive, J Band

J Band is a proprietary product. It is applied to a longitudinal joint before placing the top lift / driving surface. It is place by a special distributor in an 18” wide area at the joint. Both passes of the final wearing surface will be over about 9” of the J Band. This material will greatly reduce longitudinal joint deterioration. Here is a link to a minute video on the product. http://www.roadfabrics.com/videos/ ...more »

Submitted by (@jerry.geib)
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Idea Submitted by : Jerry Geib

List your MnDOT Office,District,City, County, Univ. or Other : Office of Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Glenn Engstrom

Why is this a priority and what are the benefits for the State/County/City? :

My estimate is about $2.50 / ln ft. This equates to $13,200 / mile or $6,600 / lane mile on a two lane trunk highway. This is a high initial cost solution (vs. the Crafco joint adhesive or rolling options) to the longitudinal joint problem. It may be the most cost effective solution.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Research

Idea Status (this will be updated by the moderator) : Need Statement #512

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Materials and Construction

Optimizing Concrete Mixtures

With increasing environmental regulations, emphasis on lowering carbon footprint, as well as concerns about future availability of supplementary cementitious materials, DOTs are continually seeking ways to lower the use of cementitious materials in concrete pavements. These efforts are supported by national and state research showing that the total cementitious content in paving mixes can be as low as 470 lb/CY, while ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Ben Worel

Why is this a priority and what are the benefits for the State/County/City? :

National Road Research Alliance Rigid Team

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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Materials and Construction

Early Opening of Concrete Pavements

The PCC paving industry and many DOTs are often searching for cost-effective, low-risk solutions to reduce the time a conventional PCC pavement is closed for construction or patching without compromising long-term performance. In addition to helping establish a means for determining when a PCC pavement or patch can be opened earliest to traffic, this project will study and monitor the very early-age fatigue damage and ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Ben Worel

Why is this a priority and what are the benefits for the State/County/City? :

National Road Research Alliance Rigid Team

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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Materials and Construction

Partial Depth Repair

As concrete pavements age, longitudinal and transverse joints can exhibit signs of distress as a result of traffic loading, climatic variations, materials related issues, and construction defects. Although often only small areas are involved, the joint distress can substantially disrupt traffic flow and increase pavement roughness sacrificing consumer ride comfort. Furthermore, secondary distresses and degradation of ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Ben Worel

Why is this a priority and what are the benefits for the State/County/City? :

National Road Research Alliance Preventive Maintenance Team

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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Materials and Construction

Pavement Design Criteria for Recycled Aggregate Base and Large Subbase

Currently many pavement design methods assume that the performance of aggregate base made from recycled materials is similar to the performance of aggregate base made from native materials. Also, the use of 3-6+” subbase materials is being used in some states to provide a more stable construction platform on which to place subsequent pavement layers. The purpose of this project is to measure, and then develop methods ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Ben Worel

Why is this a priority and what are the benefits for the State/County/City? :

National Road Research Alliance Geotechnical Team

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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Materials and Construction

Test Methods for Verification of Low-Temperature Cracking Resistance of Asphalt Binders and Mixtures

Low-temperature cracking continues to be the number one distress in Minnesota. While progress has been made in developing fracture mechanics tests to obtain relevant material properties, there is a need to develop simpler test methods and analyses that can be used on a routine basis and at lower costs to verify the properties of asphalt materials used in construction of Minnesota pavements. These test methods are: ...more »

Submitted by (@dave.vandeusen)
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Idea Submitted by : Dave Van Deusen; John Garrity

List your MnDOT Office,District,City, County, Univ. or Other : OMRR

Idea Champion - Who at MnDOT/LRRB? : John Garrity

Why is this a priority and what are the benefits for the State/County/City? :

In order for performance testing to be fully implemented in MN quick, reliable test procedures are needed so that construction acceptance decisions in a timely manner.

 

Primary benefits to road owners and industry include improved procedures for specifying and designing asphalt mixtures in light of heightened sustainability requirements and project-specific performance requirements, reduced construction costs, extended pavement life and reduced maintenance costs.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Research

Idea Status (this will be updated by the moderator) : Need Statement #495

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Materials and Construction

Quantifying Benefits of Improved Compaction

Air void content, specifically at longitudinal joints, is well known as a key factor affecting pavement life. There have been multiple studies showing that a conservative estimate of 10% increase in pavement life for every 1% improvement in air void content. MnDOT has required use of core measured air voids on projects for many years to monitor achieved air void content in the field. MRR has begun to catalogue the core ...more »

Submitted by (@kylehoegh)
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Idea Submitted by : Shongtao Dai and Kyle Hoegh

List your MnDOT Office,District,City, County, Univ. or Other : Materials and Road Research, Maplewood

Idea Champion - Who at MnDOT/LRRB? : Curt Turgeon

Why is this a priority and what are the benefits for the State/County/City? :

Improving asphalt pavement compaction (specifically at longitudinal joints) is critical to creating longer lasting pavements in State/County/City. This research will assist in these efforts.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : MnDOT Research

Idea Status (this will be updated by the moderator) : Need Statement #494

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Materials and Construction

Compaction Optimization Moisture Performance Test (COMPTest)

A new field moisture measurement device would be built based on prior research, trialed on construction projects, and a draft test standard developed. This new field moisture device would provide a fast and accurate method to determine the optimum moisture for compacting soils without the use of sand cones or the nuclear density gauge. This new field test would determine if the construction site soil moisture is too ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Jeff Brunner

Why is this a priority and what are the benefits for the State/County/City? :

Roads last longer when their foundations are built well. Proper compaction of the soil at the correct moisture content is very important. Accurate and fast measurement of moisture during construction has the potential to improve the quality and long term performance of every mile of road constructed by state and local agencies.

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

Idea Status (this will be updated by the moderator) : Research Need Statement #514

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Materials and Construction

Fiber Reinforced Concrete Pavements

Due to increasing budget constraints, there is interest in economizing pavement structures while continuing to maintain long term performance. Past research has demonstrated definite limits to reducing the thickness of conventional joint plain concrete pavement, thus invoking interest in understanding the potential of using fiber-reinforced concrete to allow further slab thickness reductions. In addition, research continues ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Ben Worel

Why is this a priority and what are the benefits for the State/County/City? :

National Road Research Alliance Rigid Team

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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Materials and Construction

Compacted Concrete Pavement for Local Streets

Due to increasing budget constraints, there has been renewed interest in exploring the application of lower (initial) cost concrete pavement solutions such as roller compacted concrete (RCC). The recent introduction of a closely related concrete pavement type, dubbed “Compacted Concrete Pavement (CCP)” addresses the primary issue of using RCC on public roadways: that of the lack of the ability to create a surface texture ...more »

Submitted by (@john.siekmeier)
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Idea Submitted by : John Siekmeier

List your MnDOT Office,District,City, County, Univ. or Other : MnDOT Materials and Road Research

Idea Champion - Who at MnDOT/LRRB? : Ben Worel

Why is this a priority and what are the benefits for the State/County/City? :

National Road Research Alliance Rigid Team

Project Type - MnDOT or LRRB / Research, Implementation or TRS : Joint MnDOT/LRRB Research

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