摘要:
An air dryer comprises a base member and a main cartridge attached thereto and contains means for drying and possibly filtering and/or cleaning air passing there through. An intermediate cartridge, containing means for drying and possibly filtering and/or cleaning air passing there through, is arranged between the base member and the main cartridge.
摘要:
Rumble strips slow down the speed of tires that are crossing the rumble strips that the vehicle tends to turn its direction toward the shoulder. Also, a component of the reaction force from the rumble strips pushes the vehicle further away from its normal path. These two effects cause potential danger to the driver. The current invention shows a rumble strips apparatus that are capable of providing a guiding force to guide the vehicle back to its normal path and in the mean time, providing vibration as conventional rumble strips do.
摘要:
A projection optical system has three LCLVs; a first color-separating mirror for separating a substantially polarized light into a first and second color lights and a third color light; a half-wave plate for rotating the polarization direction of either one(s) of the separated light; a second color-separating mirror for synthesizing the first and the third color light, and further, separating the second color light; a first PBS for separating the first and third color lights and illuminating the first and third LCLVs, respectively, and synthesizing image lights from the first and third LCLVs; a second PBS for illuminating the second LCLV and emitting a image light modulated by the second LCLV; a half-wave plate disposed external to output surface of the first PBS; and a third PBS for synthesizing three image lights, the third PBS has a dicroic characteristics and a polarization characteristics.
摘要:
A method of reconstructing a road is provided. This method includes taking representative cores of the road, analyzing the cores, selecting a substantially solvent-free emulsion based on climate history, mixing the emulsion and reclaimed asphalt pavement particles to form an asphalt emulsion mix, testing the asphalt emulsion mix for performance using a raveling test, a thermal cracking prediction test by an indirect tensile testing, a moisture susceptibility test utilizing vacuum saturation, and a dry Marshall stability test. It also includes designing a CIR layer based on this test data. It further includes grinding off a layer of the existing asphalt road leaving at least about an inch, adding an emulsion to the reclaimed asphalt pavement particles, applying the designed cold in-place recycling layer to the road, and compacting it.
摘要:
A process and device for the recycling of asphalt including at least one one preheater unit. The preheater having a heater, scarifying rakes, and a bin to dispense aggregate. Also include is a recycling machine having a heater, scarifying rakes, a plurality of extension mills, a main mill, as well as a pug mill having first and second downwardly rotating rotors, the pug mill mixes asphalt and liquid additives together to form a homogenous mix; and at least one screed for laying the homogeneously mixed asphalt to grade.
摘要:
Composite concrete pavement includes the surface course of normal concrete and subbase and/or lower layer of concrete with coarse aggregate defined as enriched limestone waste of grading intermediate between the coarse and fine aggregates. Specified compressive strength and modulus of rupture of this concrete amount up to 5,000 and 750 psi, respectively. Coarse aggregate of this concrete is enriched by-product of manufacture of crushed limestone of regular sizes. As a raw material for enrichment it should be coarser than 9.5 mm and finer than 4.75 mm. The amount of aggregate finer than 4.75 mm as a part of the total weight of aggregate should be not less than null before enrichment and close to but not exceed null in aggregate bin. The use of this very cheap and efficient concrete for composite concrete pavement allows reduction of initial cost of construction of this pavement and makes it more competitive as compared with asphalt pavement.
摘要:
An electrically conductive paving system that has enhanced conductivity of the conductive graphite/asphalt layer. This is achieved by incorporating into the paving mixture a blend of two naturally occurring crystalline flake graphites, one being coarse (generally larger than 40 mesh/425 microns) and the other being fine (generally smaller than 100-200 mesh/150-75 microns). The ratio of course flake graphite to fine flake graphite may be from 1.5:1 and 1:1.5, but is preferably approximately 1:1.
摘要:
A system for generating energy on the road, from the vehicles movement on the road, comprises a driving cylinder laid across the road in such a way that vehicles pass over it, an electrical generator for generating electricity when its axis is rotated, and a transmission unit for transferring rotational motion from the driving cylinder to the generator axis. The electrical generator comprises a large generator for an electrical power station or a small generator for local consumption. The transmission unit includes a gear system for increasing the rotation speed.
摘要:
Safety improvements of airport runways and taxiways are achieved by providing a flexible, water-impermeable surfacing material on a compacted soil base directly adjacent to an edge of airstrip shoulders. A synthetic grass surface is provided on the area beyond the surfacing material so that foreign objects such as loose particles of the airstrip shoulder materials will be driven by jet blasts and run-off across the relatively smooth texture of the surfacing material and will be trapped by the synthetic grass, thereby minimizing foreign object damage to aircraft engines, particularly to those overhanging engines which extend well beyond the existing runway and taxiway shoulders.
摘要:
An adsorptive-filtration media for the capture of waterborne or airborne constituents. The media comprises a granular substrate and an amphoteric compound bonded to the substrate in the presence of a crystal inhibiting agent. The media can also comprise a substrate having a specific gravity of less than 1.0 and an amphoteric compound bonded to the substrate. Another media comprises a substrate with a specific surface area of greater than 0.1 m2/gm and an amphoteric compound bonded to the substrate. Another media includes a granular substrate and a manganese oxide amphoteric compound formed on the substrate. Also disclosed is a pavement material for the capture of waterborne constituents. The pavement material comprises a porous pavement substrate and an amphoteric compound bonded to the substrate. Also disclosed is a method for producing a porous, cementitious material. The method includes the steps of providing and thoroughly mixing cement and aggregate, mixing water with the cement and aggregate into a slurry while maintaining a water to cement ratio of less than one, initiating curing of said slurry under pressure and in the presence of steam, and continuing the curing at ambient temperature and pressure until the cementitious material is substantially dry.