David K. Hein

David K. Hein
Retired

Bachelor of Applied Science

About

64
Publications
46,711
Reads
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179
Citations
Citations since 2017
6 Research Items
104 Citations
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Publications

Publications (64)
Conference Paper
Full-text available
Segmental paving slabs are seeing increased use in the U.S. and Canada in municipal, commercial and residential vehicular applications. Currently, there are no structural design guidelines in North America for such applications. In addition, there are no structural guidelines for precast concrete ‘planks’ (long, thin units), thin paving units (some...
Conference Paper
Full-text available
With an increased interest in low impact design and green infrastructure incentives, permeable pavements are becoming increasingly popular as an alternative pavement solution to minimize stormwater runoff and to improve water quality. Traditional shoulders are designed to provide a safety zone for emergency pull offs, provide a traffic lane during...
Conference Paper
Full-text available
Life-cycle costing can be used to benchmark pavement type options such as permeable and conventional pavements to determine which is the most cost effective. Traditionally when performing a life-cycle cost analysis between permeable and conventional pavements, only the standard capital costs for initial construction and maintenance and rehabilitati...
Conference Paper
Full-text available
The sustainability of pavement infrastructure is paramount to insuring viable transportation of people and goods. With the increasing size of roadway networks and increasing commercial vehicle loading, the investment required to maintaining the roadway network is increasing. Preventive maintenance treatments reduce the risk of premature deteriorati...
Conference Paper
Full-text available
This paper outlines technical advances in permeable interlocking concrete pavement (PICP) design being introduced in the newly created American Society of Civil Engineers (ASCE) standard. PICPs include high strength, impermeable concrete units for the surface that meet ASTM or CSA standards. When installed, the joints between units are filled with...
Conference Paper
Roadway agencies in Canada are at various levels of maturity in the implementation of transportation asset management programs and systems. While provincial highway agencies and the larger cities generally are more advanced because they have more resources than smaller municipalities, strong leadership and champions within the agencies are moving f...
Conference Paper
Full-text available
With continuous development and expansion of industrial plants in rural areas, the movement of superheavy loads has become a necessity. Over the years, researchers have attempted to develop structural response models to predict pavement damage from superheavy loads with mixed degrees of success. To date, specific structural analysis guidelines/meth...
Conference Paper
Full-text available
Sustainable infrastructure often comes with the connotation that it uses future energy resources wisely during its performance. However, the construction phase of infrastructure sustainability should not be overlooked. Understanding the impacts of pavement type and pavement material selection can lead to more holistic decisions and preferences. The...
Conference Paper
With an increased interest in low impact design and green infrastructure incentives, permeable pavements are becoming increasingly popular as an alternative pavement solution to minimize stormwater runoff and to improve water quality. Traditional shoulders are designed to provide a safety zone for emergency pull offs, provide a traffic lane during...
Conference Paper
Full-text available
Boston Logan International Airport (BOS) was the first major airport in the United States to incorporate warm mix asphalt (WMA) into asphalt concrete specifications for both runway and non-runway locations. With the increase in wide-body aircraft in the 1990s, rutting of the airside pavements at BOS became a problem. From 1995 to 2003, attempts wer...
Conference Paper
Full-text available
This paper reviews technical development of the new American Society of Civil Engineers (ASCE) standard for permeable interlocking concrete pavement or PICP. The standard notes key design elements which include high strength, impermeable concrete units for the surface that meet American Society for Testing Materials (ASTM) or Canadian Standards Ass...
Conference Paper
Full-text available
Pavement friction and its contribution to driver safety is complex. Vehicle collisions on a roadway are typically the result of many contributing factors including roadway design details, pavement surface characteristics, traffic levels, vehicle operating parameters, tire properties, environmental conditions, e.g. rain/snow and driver experience an...
Conference Paper
Full-text available
The City of Berkeley, California recently completed the rehabilitation of a section of Allston Way in the downtown core. In keeping with the progressive image of the City and to assist in reducing stormwater runoff runoff and improving stormwater runoff quality, the rehabilitation included the installation of permeable interlocking concrete pavemen...
Conference Paper
Full-text available
The sustainability of pavement infrastructure is paramount to insuring viable transportation of people and goods. With the increasing size of roadway networks and increasing commercial vehicle loading, the investment required to maintaining the roadway network is increasing. Preventive maintenance treatments reduce the risk of premature deteriorati...
Conference Paper
Full-text available
The number of highway concession contracts in North America is increasing rapidly with many agencies turning to the public/private/partnership model to develop and build much needed highway infrastructure. As agencies build on the PPP model, they transfer more risk to the private sector including the risks associated with the operation, maintenance...
Article
Permeable pavements can be a major contributor to the effective management of stormwater. They provide the opportunity to transform traditional stormwater management into use of a best management practice for capturing, storing, and infiltrating stormwater into the natural surroundings. The benefits include reduced stormwater discharges, as well as...
Patent
Full-text available
A thermal protection system for an electrical system having a control system and an electrical outlet connected to an electrical power source includes an electrical cord having a plug attached thereto that is configured to electrically connect with the outlet. A non-contact temperature sensor is disposed within the plug and configured to measure a...
Article
The concrete pavement industry is actively seeking new and modern solutions to the construction of more economical, more sustainable, and more durable roads. One innovative product being evaluated for use in pavement applications consists of interlocking modular, dome-shaped plastic units that serve as a permanent formwork. The result is a concrete...
Conference Paper
Full-text available
The majority of Canadian geography is in a wet-freeze environment. In winter, pavements and the underlying subgrade freezes. During the spring thaw, water in the pavement structure and subgrade reduces the stiffness (resilient modulus) of some of the pavement layers and in particular the subgrade. This reduces the overall structural capacity of the...
Conference Paper
Full-text available
With an increased interest in low impact design and green infrastructure incentives, permeable pavements are becoming increasingly popular as an alternative pavement solution to minimize stormwater runoff and to improve water quality. Traditional shoulders are designed to provide a safety zone for emergency pull offs, provide a traffic lane during...
Patent
Full-text available
An offline power supply includes a power supply circuit including a primary-side circuit for connecting to a power source, a secondary-side circuit for connecting to a load, and a transformer connecting the primary-side circuit and the secondary-side circuit. A switch operates to selectively connect the primary-side circuit to the power source. A t...
Conference Paper
While many agencies responsible for the management of airport infrastructure are working towards holistic infrastructure management, there is currently no standard in place in Canada and the United States. An international standards organization 55000 series of standards is currently under development. This standard uses the British Standards Insti...
Patent
Full-text available
A system and method operable to facilitate thermal wall plug sensing and control may include an ability to control current drawn by a charging system or other load according to a temperature determined at an interface between the charging system and an energy source used to provided energy to the charging system. A temperature sensed with a tempera...
Patent
Full-text available
A ground monitor is disclosed. The ground monitor may be configured to conduct a ground continuity test based on a determined ground resistance. The ground monitor may be operable to determine the ground resistance as a function of a voltage differential detected during application of a test current.
Patent
Full-text available
A remote rearview mirror system for actuating a vehicle head restraint includes a transmitting module and receiving module that operate at a distance. The transmitting module is included in a rear view mirror. These modules require a matching that need to be preserved until the components are installed in a vehicle. The steps of such matching inclu...
Conference Paper
This paper reviews technical development of the emerging ASCE standard for permeable interlocking concrete pavement or PICP. The draft standard notes key design elements, which include high-strength, impermeable concrete units for a pavement surface that meet ASTM or CSA standards. When installed, the joints between units are filled with permeable...
Conference Paper
Full-text available
Permeable pavements have been gaining popularity throughout North America. Permeable pavements typically consist of pervious concrete, porous asphalt, or permeable interlocking concrete block paving units over an open grade base/subbase layer(s). Permeable pavements are designed to infiltrate stormwater, reduce peak flows, filter and clean contamin...
Patent
Full-text available
A system and method is provided for evaluating performance of a supply circuit for electric vehicle charging. An electrical connection is established between a vehicle circuit and a supply circuit for an external Alternating Current (AC) power supply. The electrical connection includes a hot, neutral, and ground conductor. A control signal is trans...
Patent
Full-text available
A head restraint actuation system is provided having a receiver configured for receiving an image signal, a transmission status signal, a head restraint request signal and a seat information signal. A mirror controller is configured for communicating with the receiver for analyzing the received signals and selecting a rearview mirror mode. A user i...
Article
This paper describes key issues concerning the transportation of raw forest products in Northern Ontario, Canada. The issues are related to the need to minimize the cost of transporting raw forest products. The specific topics include the technology of logging trucks, the management of logging trucks on local roads, and strategies for reducing the...
Article
The pavement performance models used in the new American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide (MEPDG) were calibrated to observed field performance from the Strategic Highway Research Program (SHRP) Long Term Pavement Performance (LTPP) test sections and various other test tr...
Conference Paper
The need to preserve our airfield pavement infrastructure is paramount to insuring the viability of transportation of people and goods. Preventive maintenance plays an important role in the preservation of airfield pavement infrastructure. A successful preventive maintenance program cannot function without the support of many features associated wi...
Article
To obtain full benefits from the new Guide for Mechanistic-Empirical Design of New and Rehabilitated Pavement Structures (MEPDG), it is necessary to characterize pavement traffic loads using detailed traffic data, including axle load spectra. Preferably, the detailed traffic data should be site specific. In the absence of site-specific traffic data...
Article
Traditionally, the objective of tire-pavement noise studies has been limited to ranking of different pavement surfaces in terms of their potential to generate noise. The potential to generate noise has been assessed by using a variety of sound-level measurements and sound-level measures, typically quite different from those used for the environment...
Article
Full-text available
Word Count: 4542 words, 2 figures 7th International Conference on Managing Pavement Assets (2008) TRB Committee AFD10 on Pavement Management Systems is providing the information contained herein for use by individual practitioners in state and local transportation agencies, researchers in academic institutions, and other members of the transportati...
Article
Full-text available
Most North American cities are using a pavement management system (PMS) for their streets to budget maintenance and future rehabilitation costs. PMS is a programming tool that collects and monitors information on current pavement conditions and forecasts future performance and conditions. This enables city officials to evaluate and prioritize alter...
Article
Procedures are described for estimating annualized life-cycle costs of road infrastructure for road classes and geographical regions of Canada. Estimated costs are total annualized costs required for constructing and maintaining road infrastructure. Total costs include initial construction costs for pavements, bridges, and other road infrastructure...
Article
Full-text available
This paper presents an analysis of the potential impact of misaligned dowel bars on concrete pavement joint performance. The performance and efficiency of a concrete pavement joint is assessed through the ability of the joint to expand and contract under temperature variations. With the finite difference method, the pullout force and stress distrib...
Article
Full-text available
With increasing damage due to the combination of increasing traffic load applications, adverse climate, and increasing frequency of trench cutting and patching associated with utility work, residential streets are requiring more frequent, extensive, and costly maintenance and rehabilitation (M&R) to maintain adequate levels of serviceability during...
Article
This paper presents an analysis of the potential impact of misaligned dowel bars on concrete pavement joint performance. The performance and efficiency of a concrete pavement joint is assessed through the ability of the joint to expand and contract under temperature variations. With the finite difference method, the pullout force and stress distrib...
Article
With increasing damage due to the combination of increasing traffic load applications, adverse climate, and increasing frequency of trench cutting and patching associated with utility work, residential streets are requiring more frequent, extensive, and costly maintenance and rehabilitation (M&R) to maintain adequate levels of serviceability during...
Article
Municipalities in Canada spend in excess of $10 billion annually on aging infrastructure. Asset management systems, of which pavement management systems are a subset that have been in place for over 30 years, explicitly recognize the importance of maintenance and rehabilitation planning to ensure that our infrastructure assets remain viable. These...
Article
Full-text available
Engineers are frequently asked to develop detailed rehabilitation strategies and repair quantity estimates for the concrete portion of composite pavements based on visual condition assessments and Falling Weight Deflectometer (FWD) testing completed on top of the hot mix asphalt (HMA) layer. In some cases, once the HMA layer is removed, the conditi...
Article
The reconstruction of 30 km of County Road 2 by the of Frontenac in 1996 provided the opportunity for municipal implementation of Superpave performance graded asphalt binder and volumetric mix design technology. The Superpave surface course asphalt mix was placed over a cold in-place recycled binder course pavement. Placement and compaction procedu...
Article
A European maintenance technique called microsurfacing can prolong the service life of cracked, raveled pavements in urban areas for years - with minimal interruiption to traffic and for less than half the cost of conventional rehabilitation methods. Microsurfacing technology has been widely used in Germany and France for the last 15 years. A polym...
Article
Frost-related flexible pavement damage is particularly acute in areas of variable soil and groundwater conditions, especially with shallow, rapidly changing depths to bedrock that trap pockets of poor soils. Complete removal of frost susceptible subsoils and replacement with granular material, coupled with positive drainage, will eliminate most fro...
Article
Full-text available
The condition of our roads and highways greatly contributes to the overall vitality of the Canadian economy. By improving ride quality, extending pavement life and ensuring safety, effective pavement preventive maintenance programs will help to allow people and goods to move safely and insure that our road network remains in good condition. Many pa...
Article
Full-text available
Occasionally, transportation agencies receive complaints from residents living near roads about annoying or even structurally-damaging traffic-induced vibration. The resolution of these complaints can be very challenging because many transportation agencies do not have guidelines for the assessment of the potential impact of traffic-induced vibrati...
Article
Full-text available
Surface treatments, seal coats and chip seals are commons surface types on low volume roads in Canada. With changes in traffic volumes and business activities, transportation agencies face the challenge of deciding if and when surface-treated pavements should be upgraded to asphalt concrete pavements or, alternatively, when asphalt concrete pavemen...
Article
Full-text available
The Highway 407 ETR concession in Ontario, Canada, is responsible for the management of a large highway network for a period of 99 years. As a part of that concession, 407 ETR manages over 600 lane-km (373 lane-mi) of exposed concrete highway. 407 ETR has a very active pavement maintenance and preservation program to maximize the life of the pave-m...
Article
Full-text available
In 1999, the Ontario Ministry of Transportation awarded the Highway 407 ETR Concession a 99-year lease to operate, maintain, and expand Ontario Highway 407. Highway 407 consists of 69 km of 6-lane divided highway which extends in an east/west direction north of Toronto, Ontario. The current expansion of Highway 407 includes extensions to the east (...
Article
Full-text available
Preserving municipal pavement infrastructure is paramount to insuring viable transportation of people and goods. It requires increasing investments because of the increasing size of roadway networks and increasing commercial vehicle loading. Preventive pavement maintenance is important for preserving municipal road infrastructure. Preventive mainte...

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