原文传递
DEVELOPMENT OF A PAVEMENT MARKING MANAGEMENT SYSTEM: MEASUREMENT OF GLASS SPHERE LOADING IN RETROREFLECTIVE PAVEMENT PAINTS.
| 题名： | DEVELOPMENT OF A PAVEMENT MARKING MANAGEMENT SYSTEM: MEASUREMENT OF GLASS SPHERE LOADING IN RETROREFLECTIVE PAVEMENT PAINTS. |
| 作者： | Rich-MJ; Maki-RE; Morena-J |
| 关键词： | Center-lines; Durability-; Edge-lines; Glass-beads; Maintenance-management; Michigan-; Performance-; Retroreflectivity-; Road-marking-management-system; Road-markings |
| 摘要： | Of critical economic importance to roadway management agencies is the retroreflectivity of edge lines and centerlines and the retention of retroreflectivity with exposure to weather, snowplowing, road salt and sand, and traffic density. This study evaluated factors affecting the performance and durability of painted edge lines and centerlines on specific Michigan roadway sections as part of a project to develop a practical pavement marking management system. An ill-defined aspect of retroreflectivity is the relationship of glass sphere content and the decay of retroreflectivity over time and from seasonal maintenance. Two techniques were developed to quantify the glass sphere content of retroreflective pavement paints. In the first method, aluminum plates are fastened to the roadway and painted in the field as the painting crew applies the striping. The plates are retrieved and pyrolyzed at elevated temperature, with observations made on weight changes of the painted plate. A mass fraction of glass spheres can then be calculated. In the second method, the painted plates are photographed at low magnifications. The macrographs are converted to a binary image that is evaluated using image analysis software to determine the number of spheres per area, average size, and aerial percent. The glass sphere content, as determined by pyrolysis and image analysis, is correlated with retroreflectivity measurements collected on the same samples. These new methods will lead to a better understanding of factors related to the retroreflectivity loss of pavement paints and ultimately to improved products and maintenance practices. |
| 总页数： | Transportation Research Record. 2002. (1794) pp49-54 (3 Phot., 6 Fig., 1 Tab., 4 Ref.) |
| 报告类型： | 科技报告 |
相关文献
- User's Guide: Pavement Markings; Final rept
- SERVICE LIFE OF DURABLE PAVEMENT MARKINGS.
- Development and Evaluation of Raised Traffic Lane Markers, 1968 to 1971.
- Evaluation of Snowplowable Reflective Pavement Markers for Effective Delineation. Final rept.
- DETECTABILITY OF PAVEMENT MARKINGS UNDER STATIONARY AND DYNAMIC CONDITIONS AS A FUNCTION OF RETROREFLECTIVE BRIGHTNESS.
- Assessment of Various Rumble Strip Designs and Pavement Marking Applications for Crosswalks and Work Zones.
检索历史
应用推荐
