Utilization of Solid Waste Materials in Highway Construction

Author(s):  
Khaldoun Shatanawi ◽  
Carl Thodesen ◽  
Serji Amirkhanian
2009 ◽  
Vol 27 (4) ◽  
pp. 354-361 ◽  
Author(s):  
Alireza Mesdaghinia ◽  
Kazem Naddafi ◽  
Amir Hossein Mahvi ◽  
Reza Saeedi

The waste management practices in primary healthcare centres of Iran were investigated in the present study. A total of 120 primary healthcare centres located across the country were selected using the cluster sampling method and the current situation of healthcare waste management was determined through field investigation. The quantities of solid waste and wastewater generation per outpatient were found to be 60 g outpatient—1 day—1 and 26 L outpatient—1 day— 1, respectively. In all of the facilities, sharp objects were separated almost completely, but separation of other types of hazardous healthcare solid waste was only done in 25% of the centres. The separated hazardous solid waste materials were treated by incineration, temporary incineration and open burning methods in 32.5, 8.3 and 42.5% of the healthcare centres, respectively. In 16.7% of the centres the hazardous solid wastes were disposed of without any treatment. These results indicate that the management of waste materials in primary healthcare centres in Iran faced some problems. Staff training and awareness, separation of healthcare solid waste, establishment of the autoclave method for healthcare solid waste treatment and construction of septic tanks and disinfection units in the centres that were without access to a sewer system are the major measures that are suggested for improvement of the waste management practices.


2019 ◽  
Vol 1378 ◽  
pp. 022058
Author(s):  
D.D. Adegoke ◽  
T. O. Ogundairo ◽  
D.O Olukanni ◽  
O.M. Olofinnade

Biomass ◽  
1990 ◽  
Vol 23 (3) ◽  
pp. 201-214 ◽  
Author(s):  
Christopher J. Rivard ◽  
Todd B. Vinzant ◽  
William S. Adney ◽  
Karel Grohmann ◽  
Michael E. Himmel

1992 ◽  
Vol 266 ◽  
Author(s):  
Theodore H. Wegner ◽  
John A. Youngquist ◽  
Roger M. Rowell

AbstractA reduction is urgently needed in the quantities of industrial and municipal solid waste materials that are currently being landfilled. Major components of municipal solid waste include waste wood, paper, agriculture wastes, and other biomass fibers. In 1990, there were approximately 80 million tons of 6,000 different paper and paperboard products and 5.8 million tons of wood in the municipal solid waste stream. There are also potential millions of tons of wood fiber in timber thinnings, industrial wood waste, demolition waste, pallets, and pulp mill sludges. These materials offer great opportunities as recycled ingredients in wood-based composites. This paper discusses possibilities for manufacturing selected composites from these materials as well as materials which coexist with the wood-based resources such as plastics, fly ash, and gypsum.


2000 ◽  
Vol 1702 (1) ◽  
pp. 97-107
Author(s):  
William A. Hyman ◽  
Bruce L. Johnson

The State of Minnesota frequently receives requests from outside sources regarding the acceptance of waste materials for reuse in highway construction and maintenance projects. These waste materials can include glass, roofing shingle tabs, shredded tires, coal ash, railroad ties, and taconite tailings. The Minnesota Department of Transportation (MnDOT) recently established a policy requiring the use of such materials if they have both short- and long-term public benefits. MnDOT sought a framework to assess these benefits. A decision framework and decision-support tool—in the form of an electronic spreadsheet—were developed, tested, and refined through the application of three case studies. The framework and the spreadsheet decision-support tool are described, and results are presented from one of the case studies. This information illustrates the types of input the spreadsheet requires and the output it produces. The spreadsheet is a flexible tool that accounts for a variety of materials and their placement in highways. It compares ( a) the discounted present value over a 20-year period of incremental increases in highway construction and maintenance costs as a result of using broken glass in roads with ( b) the avoidable costs of disposal by transporting the waste and landfilling it or disposing of it at the source—that is, where the waste material is generated.


2021 ◽  
Vol 1 (1) ◽  
pp. 22-24
Author(s):  
Ashish R. Kale

India is buried under waste stacks as more than 1.50 lakhs ofsolid waste (MT) per day is produced. Worse, nearly 90% of the total volume is collected (135,000 tonnes daily). Almost 15,000 MT of waste remains exposed each day, which leads to a "severe" amount of contamination of some 55 lakh of MT of solid waste disposed of each year in open surface. Just 20% (27 000 tonnes per day) of the total waste collected and 80% (1 08 000 tonnes per day) was disposed of. The remaining 80% is disposed of on site. Progress in the management of solid waste has resulted in materials that replace conventional materials, including bricks, blocks,tiles, aggregates, ceramics, cement, lime, soil, timber and paint. In this research, Eco blocks are generated using waste materials like fly-ash and waste using aggregates of cement and yard. It optimizes materials with various combinations and defines the compression strength of the eco-blocks. Days of 7.71, 5.8 and 9.10 N/mm2 are compressive strengths of 14 and 28. The strength of ecological blocks is equal to or above that of the local company’s regular concrete blocks. The study showed that solid waste can be used for solid block processing. We also analyzed how debris can be recycled to find an alternative to reduce natural resource costs and use.


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