A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of an Accelerated Testing Laboratory for Highway Research in Kansas
Improving pavement performance in the United States is presently the subject of a major national effort. As part of this effort, the Kansas Department of Transportation (KDOT) is designing a number of new pavement mixes and structures. On the other hand, Portland Cement Concrete Pavement (PCCP) is becoming more commonly used in new constructions as well as for highway resurfacing, retrofitting, rehabilitation and reconstruction (4R). Concrete overlay--known as white topping--installed on the top of existing deteriorated asphalt road surface has shown many advantages over asphalt resurfacing. In both new constructions and overlays, shear transfer devices between adjacent pavement slabs currently consist of steel dowels. However, problems with PCCP have been observed at these joints and new shear transfer devices, --such as X-FLEX which was invented at Kansas State University (KSU)--, have been proposed to avoid such problems. In order to learn more about the performance of these new designs and products before they are put on the road, large scale testing is necessary in an experimental setup that best simulates actual road conditions and that is most representative of real world situations. Actual road conditions include exposure to both highway traffic (repetitive loading) and adverse environmental effects (temperature and moisture variations). For these reasons, the Department of Civil Engineering at KSU and KDOT developed the new Kansas Accelerated Testing Laboratory (K-ATL) at KSU. The objectives of this project are to design, construct and install testing equipment to apply computer-controlled wheel loads to pavement/slab test sections under constant (normal) or variable (monitored) laboratory environmental conditions.
Development of an Accelerated Testing Laboratory for Highway Research in Kansas
Improving pavement performance in the United States is presently the subject of a major national effort. As part of this effort, the Kansas Department of Transportation (KDOT) is designing a number of new pavement mixes and structures. On the other hand, Portland Cement Concrete Pavement (PCCP) is becoming more commonly used in new constructions as well as for highway resurfacing, retrofitting, rehabilitation and reconstruction (4R). Concrete overlay--known as white topping--installed on the top of existing deteriorated asphalt road surface has shown many advantages over asphalt resurfacing. In both new constructions and overlays, shear transfer devices between adjacent pavement slabs currently consist of steel dowels. However, problems with PCCP have been observed at these joints and new shear transfer devices, --such as X-FLEX which was invented at Kansas State University (KSU)--, have been proposed to avoid such problems. In order to learn more about the performance of these new designs and products before they are put on the road, large scale testing is necessary in an experimental setup that best simulates actual road conditions and that is most representative of real world situations. Actual road conditions include exposure to both highway traffic (repetitive loading) and adverse environmental effects (temperature and moisture variations). For these reasons, the Department of Civil Engineering at KSU and KDOT developed the new Kansas Accelerated Testing Laboratory (K-ATL) at KSU. The objectives of this project are to design, construct and install testing equipment to apply computer-controlled wheel loads to pavement/slab test sections under constant (normal) or variable (monitored) laboratory environmental conditions.
Development of an Accelerated Testing Laboratory for Highway Research in Kansas
H. G. Melhem (author)
1997
78 pages
Report
No indication
English
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