Design and Construction

Design and Construction

Design and Construction topics include: Bridges and Other Structures, Construction, Design, Geotechnology, Hydraulics & Hydro-geology, Materials, and Pavement
(@rickyrab)

Design and Construction

How to fix the Portal Bridge and other possible single points of failure?

The Portal Bridge, an important commuter rail bridge connecting New Jersey to the hub of New York City, is a vital component of our transportation system. When it gets stuck, commuters get delayed, complaints go up, and satisfaction with NJ TRANSIT services go down. Underfunding has delayed a bridge repair or replacement, and it may be worthwhile to look into ways of funding and creating a repair/replacement for the Portal ...more »

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(@haowang)

Design and Construction

Improved Climate Inputs for Pavement Design in New Jersey

Environmental conditions have significant effects on performance of both flexible and rigid pavements. In the current AASHTO Pavement ME, an Enhanced Integrated Climatic Model (EICM) uses climatic data to simulate internal pavement temperature, moisture, and freeze-thaw conditions as a function of time. EICM requires historical records of five weather-related parameters reported on an hourly basis: air temperature, precipitation, ...more »

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Design and Construction

Plastic Roadways

From India and Scotland, to Texas USA, plastic additives are utilized in patching potholes, repairing cracks, and could be mixed with bitumen to create full paved roads. This action could help with a reduction of plastic waste, a decrease of material cost, a stronger durability with roads, and done without causing leeching or harm to the environment.

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Design and Construction

Strain-hardening Cementitious Composites for Resilient and Eco-friendly Infrastructure

Strain-hardening cementitious composites (SHCC) is a family of high-performance fiber-reinforced cementitious composites that have high tensile ductility and multiple cracking behavior in tension. Compared with normal concrete, the tensile ductility of SHCC is typically 300-500 times higher. Cracked SHCC has retained resistance to tension, and generates densely-distributed microcracks rather than a limited number of wide ...more »

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Design and Construction

Developing High-performance Pervious Concrete for Multifunctional Pavement

Road is essential for our economy and way of life. According to the 2016 Report Card for New Jersey's Infrastructure, the overall rating for the road condition in New Jersey is D+, indicating that New Jersey's road is in poor condition. There is an urgent need to innovate the pavement materials to improve the road condition in a cost-effective way. Recent research shows that pervious concrete has great potential for ...more »

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Design and Construction

Innovative Standardized Connection Details for Highway Signs and Signal Support Structures

In service fatigue fracture of highway signs and signal support structures due to wind induced oscillations is the primary concern for cost-effective life cycle performance of these structures. Recognizing the impact of potential life and property damage from structural failures and economic burden of inspecting, maintaining and replacing the sheer volume of these structures in the inventory, the American Association ...more »

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Design and Construction

Influence of Platooning Trucks on Bridge Strength, Serviceability and Durability

Given the significant savings in fuel consumption (due to improved air dynamics) and the relatively simple control schemes required (compared to other autonomous vehicle scenarios) truck platooning is expected to be one of the first applications of autonomous vehicles. Although much work is ongoing in the realm of control schemes, communication protocols, signage, driver training, and policy, little (if any) attention ...more »

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Design and Construction

Extremely Durable Concrete for Transportation Infrastructure

A cementitious material with right chemistry is necessary but insufficient for ensuring infrastructure durability. A cementitious material designed through advanced chemistry can demonstrate slow degradation and low permeability under controlled test conditions in laboratory setting. However, the degradation rate of the material could be quite different in a structure. In general, cementitious materials in infrastructure ...more »

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Design and Construction

Innovative materials for subgrade reinforcement in New Jersey

The engineering characteristics of subgrade materials are important to the integrity and serviceability of pavement. The most critical characteristics include load bearing capacity and volumetric change. The subgrade must be able to support loads applied on pavement without excessive deformation, and able to maintain its volumetric structure under severe temperature and groundwater level variations. To enhance the shear ...more »

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Design and Construction

Innovative Cost-Effective Standard Decks for Movable Bridges

New Jersey has the third-most movable bridges of the 50 states, with an average age of approximately 40 years and more than 50% of these bridges are structurally deficient mainly due to their bridge decks. Moreover, many of these bridges, whether state or locally owned, are subjected to significant amounts of average daily truck traffic (ADTT). Because of their condition and their location on significant commerce routes ...more »

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Design and Construction

Mitigating Freeze-thaw Deteriorations in Concrete Pavement Using Phase Change Materials

Many concrete transportation infrastructures in New Jersey such as pavements, bridge decks, and girders are suffering from exposure to successive frost actions and deicing salt. The number of freezing days in New Jersey leads to various premature to long-term distresses such as salt scaling, D-cracking, random cracking, and joint deterioration since water on freezing expands by 9% in volume, raising the internal pressure ...more »

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(@haowang)

Design and Construction

Assessment of Pavement Structural Capacity for Better Maintenance and Rehabilitation Strategies

Currently NJDOT relies on measurement of surface distress and roughness to assess pavement condition and determine pavement maintenance strategy. It is possible that some pavement sections have structure deficiency (such as internal debonding or cracks) but show few or no surface distress. On the other hand, some pavement sections may only have surface-initiated cracking within certain depth. With the availability of ...more »

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Design and Construction

Innovative HPFRCC-steel composite girder under combined mechanical and environmental loadings

Concrete-steel composite girders combine the advantages of concrete and steel and have been used in a number of bridges worldwide. However, concrete cracking and shear connector damages affect the long-term durability of the conventional concrete-steel composite girders. In recent years, high-performance fiber-reinforced cementitious composites (HPFRCC) that have high mechanical strength, crack resistance, workability, ...more »

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Design and Construction

Enhancing the fatigue resistance of welded joints in steel structures

While steel girders have a lot of advantages and are widely used in transportation infrastructure, welded joints in the steel girders under cyclic loading are subjected to fatigue cracks, which can significantly compromise the service life of the steel girders. Recently, two innovative approaches have been presented to improve the fatigue resistance of welded joints. The first approach is to use locally-thickened steel ...more »

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Design and Construction

Development of Cost-Effective Polyethene Fiber Reinforced UHPC for Infrastructure Rehabilitation

Constructability, strength, ductility and durability are crucial properties for development of materials for infrastructure rehabilitation. Constructability should allow ease of mixing, placing, and curing of rehabilitation application. High-strength can facilitate the small volume of repair materials to provide enough strength falling in safety margins (particularly in compression) of structures. High ductility can prevent ...more »

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