In order to obtain the actual contact area and stress distribution between tire and asphalt pavement, a pressure-sensitive film was conducted and adopted for measuring radial tire contact stress.
To make sure theory holds up in practice, engineers use another SHRP invention-the Superpave gyratory compactor-to knead a paint-can sized container of pavement under high pressure.
Three times a day, city workers move through a 30-block area cleaning the pavement with high-pressure hoses, rousting squatters and taking away shopping carts filled with refuse or personal belongings.
The hydraulic characteristics of pavement, such as pore water pressure, hydrodynamic pressure, and permeability, have a great influence on the functional performance and durability of pavement.
In order to measure the pore water pressure in pavement, a fiber optic hydraulic pressure sensor (FOHPS) is designed.
Every 10 seconds, the sensors, which are about seven inches long, read air temperature, pavement temperature, humidity, barometric pressure, light and precipitation.
The main objective of this study is to design a device for measuring the hydrodynamic pressure of pavement surface and analyze its characteristics with different vehicle speeds.
In order to investigate the influence of vehicle speeds on the hydrodynamic pressure of pavement surface, a device equipped with five fiber Bragg grating (FBG) sensors was designed and utilized to measure the surface hydraulic characteristics at four vehicle speeds in the field.
Here, we demonstrate the response of microtubules upon applied pressure in pavement cells of the Arabidopsis leaf.
All-wheel drive made sure there was no wheelspin, even on wet pavement, when I applied forceful pressure to the accelerator pedal.
