Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
PaveCool. Asphalt Pavement Cooling Software (Version 2.0) (on Diskette)
Poor compaction can lead to early deterioriation of an asphalt pavement. It often happens when paving occurs during adverse weather conditions. Yet, in cold regions like Minnesota, paving must often occur under adverse conditions. PaveCool simulates the cooling of an asphalt mat behind the paver under a variety of environmental conditions. The easy-to-use software offers users insights into how adverse climate conditions will affect their ability to produce a durable, quality road surface. Users input the type of existing surface, type of asphalt mix, and weather conditions. The output shows a cooling curve with recommended compaction starting and stopping times. Field tests confirm the value of this program as an aid to cold weather paving. This user guide documents the study of thermal properties and compactibility of hot-mix asphalt, related laboratory test on the thermal diffusivity and thermal conductivity of hot-mix asphalt at typical compaction temperatures, a literature review, and testing results. The program predicts cooling rates for asphalt mixtures based upon mixture temperature, air temperature, lift thickness, wind speed, type of existing base, and mixture type. Temperature-related compaction data is used along with the cooling rates to determine the time period in which the maximum amount of compaction can occur. During the construction of an asphalt concrete pavement, PaveCool determines the starting and ending times for compaction. The optimum compaction temperature is determined from the shear stress data and is then used along with the cooling rates to determine the time for compaction to begin. The model includes corrections to the thermal properties of 'wet' aggregates, a plot that can be viewed from the input window, and the recommended start compation time/temperature Thermal property corrections were necessary because the water content used to calcualte the previous thermal values for the wet condition was discovered to be unreasonably high.
PaveCool. Asphalt Pavement Cooling Software (Version 2.0) (on Diskette)
Poor compaction can lead to early deterioriation of an asphalt pavement. It often happens when paving occurs during adverse weather conditions. Yet, in cold regions like Minnesota, paving must often occur under adverse conditions. PaveCool simulates the cooling of an asphalt mat behind the paver under a variety of environmental conditions. The easy-to-use software offers users insights into how adverse climate conditions will affect their ability to produce a durable, quality road surface. Users input the type of existing surface, type of asphalt mix, and weather conditions. The output shows a cooling curve with recommended compaction starting and stopping times. Field tests confirm the value of this program as an aid to cold weather paving. This user guide documents the study of thermal properties and compactibility of hot-mix asphalt, related laboratory test on the thermal diffusivity and thermal conductivity of hot-mix asphalt at typical compaction temperatures, a literature review, and testing results. The program predicts cooling rates for asphalt mixtures based upon mixture temperature, air temperature, lift thickness, wind speed, type of existing base, and mixture type. Temperature-related compaction data is used along with the cooling rates to determine the time period in which the maximum amount of compaction can occur. During the construction of an asphalt concrete pavement, PaveCool determines the starting and ending times for compaction. The optimum compaction temperature is determined from the shear stress data and is then used along with the cooling rates to determine the time for compaction to begin. The model includes corrections to the thermal properties of 'wet' aggregates, a plot that can be viewed from the input window, and the recommended start compation time/temperature Thermal property corrections were necessary because the water content used to calcualte the previous thermal values for the wet condition was discovered to be unreasonably high.
PaveCool. Asphalt Pavement Cooling Software (Version 2.0) (on Diskette)
1998
1 pages
Report
Keine Angabe
Englisch
Prefabricated greening abutment for cooling asphalt pavement
| Europäisches Patentamt | 2021
Cooling Time Requirements for Asphalt Pavement Repairs
| TIBKAT | 2020
Cooling Time Requirements for Asphalt Pavement Repairs
| Springer Verlag | 2020
ASPHALT PAVEMENT, ASPHALT PAVEMENT ROAD SURFACE STRUCTURE, AND ASPHALT PAVEMENT FORMING METHOD
| Europäisches Patentamt | 2016