It appears that the ARRA program has not been comprehensively studied in relation to transportation funding. This suggests a gap in the literature on transportation research. This research will elicit what lessons we may learn from the program and espouse the importance of such lessons to inform NJDOT when such program is deployed in the future through the Federal Highway Administration (FHWA).
There are many different companies that use various types of road mapping hardware/software for their respective purposes. This technology could be utilized for multiple purposes that would benefit both the DOT and the public. All of these purposes would be achieved by the creation of a Virtual Reality State Highway System (VRSHS). I propose that the NJDOT contract with one of these companies to utilize their technology, ...more »
When I was traveling last year, I saw something new that I did not even see here in The US bright lighted curb around the roundabouts. It looked so beautiful especially at night time making circulation even easier.
With the advent of driverless cars and electric cars and drones, we need to look towards the future. People have successfully made drones that can carry one person plus baggage and fly at over 60 mph under controlled flight. As these vehicles get more powerful and larger, we will have the ability to have hover cars. No more worrying about potholes! Maybe? A study needs to be done to determine how this type of vehicle ...more »
In places where there is a large number of pedestrians crossing streets and navigating intersections, the amount of time given to pedestrian crossing time on traffic signals exacerbates an already overcrowded transportation system. When you have an area expanding in three dimensions, and a transportation system that is (including subways in with streets for simplicity) fixed in two dimensions, you have a system where ...more »
Normal sound barriers have been known to cause a reverberation that will cause sound to build prior to moving past the wall. Even though the barrier does diminish the sound from one side of the barrier to the other, because of the reverberation building, some studies have hinted that the sound is actually louder than prior to the installation. The most efficient mufflers and silencers utilize hydrodynamics to diminish ...more »
Inspired by the Lego units as toys, we propose to construct re-configurable engineering structures using prefabricated standardized blocks. The blocks are designed for assembly of large-scale engineering structures through dry jointing schemes using construction robots. The blocks will be made of high-performance fiber-reinforced cementitious composites (HPFRCC) with high mechanical properties and long-term durability. ...more »
Several months ago, the main span of the Florida International University (FIU) pedestrian bridge collapsed during construction. The bridge was designed as a signature structure in the City. Accelerated Bridge Construction (ABC) technique was implemented in the construction. An investigation on the collapse is being led by the NTSB and supported by multiple agencies, such as FHWA. Preliminary investigation reports indicate ...more »
One of the biggest problems in infrastructure is funding. As someone who spent years in various engineering positions, I know that there are many engineering related problems that can be discussed in forums like these. There are many different potential solutions. There are many different design methods. However, I have learned that one of the largest driving forces in decision making is funding. For example, ...more »
Recently, ultra-high-performance concrete (UHPC) has been introduced which has much higher mechanical properties and toughness than high-performance concrete (HPC). UHPC is typically a micro-mortar reinforced with micro fibers resulting in extremely impermeable and crack-resistant material. Such material can be used to produce precast panels that can be assembled on-site as stay-in-place (SIP) panels for the construction ...more »
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 »
The use of high-performance concrete (HPC) in bridge deck and pavement is increasing because of its enhanced durability and longer service life. The mixture design of HPC involves the use of relatively low water-to-binder ratio (w/b), supplementary cementitious materials (SCMs), and chemical admixtures. Securing high durability necessitates proper curing of the HPC to ensure adequate hydration of the cementitious system. ...more »
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 »
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 »
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 »