منابع مشابه
Impact of Compressed Natural Gas Fueled Buses on Street Pavements
Federal Clean Air Act Amendments of 1990 (CAAA) and the Energy Policy Act of 1992 (EPACT), together with other state regulations have encouraged or mandated transit systems to use alternative fuels to power bus fleets. Among such fuels, compressed natural gas (CNG) is attractive, although it must be stored in robust, heavy pressurized cylinders, capable of withstanding pressures up to 5,000 psi...
متن کاملRecycling Bituminous Pavements
This paper is a summary report on a research project entitled “An Investigation of Recycling Bituminous Pavements,” an HPR Research Project conducted by the JHRP staff at Purdue University. The research was performed by James L. McKinney, Graduate Instructor in Re search, under the direction of Professors Donn E. Hancher and Leonard E. Wood. Copies of the final report are available through the...
متن کاملRut Resistant Asphalt Pavements
The three major distress conditions affecting the performance of asphalt pavements are permanent deformation or rutting, fatigue or load associated cracking, and low temperature or thermal cracking. In an earlier technical topics article (Fall, 1998), we examined the causes of fatigue cracking and the importance of good compaction during construction to help minimize this type of distress. In t...
متن کاملJoint Deterioration in Concrete Pavements
Concrete pavements located in cold climates have been experiencing premature joint deterioration. Entrapment of moisture in the joints saturates the surrounding concrete, rendering it susceptible to freeze–thaw damage. To identify and to isolate the variables that might be causing this localized deterioration, concrete cores were obtained from deteriorated and non-deteriorated sections of US 35...
متن کاملRecycling of Bituminous Pavements
IN T R O D U C T IO N The major material utilized in the construction of the roads, streets and highways of this country is asphalt. Of the nation’s 3.84 million miles of roads, 1.86 million are paved, hard-surfaced structures. 1.74 million or 94% of these paved roads are constructed of asphalt (Fig. 1). Likewise, within the state of Indiana, 83% or about 9300 miles of the 11,200 miles under th...
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ژورنال
عنوان ژورنال: Minutes of the Proceedings of the Institution of Civil Engineers
سال: 1879
ISSN: 1753-7843
DOI: 10.1680/imotp.1879.22167