Development of color flexible pavement applicable to elementary school zone

摘要

There have been increasing demands to use bright color pavements for elementary school zones, giving a warning sign to drivers and protecting the children. This study was initiated to investigate the applicability of color flexible concrete pavement (CFCP) for elementary school zones in South Korea. Color flexible pavement has been applied to non-motorway pavements, such as pedestrian and bicycle roads. This paper presents the engineering properties of color flexible concrete pavement used for motorway pavement of elementary school zones. A commercial polymer of low-density polyethylene (LDPE) was used to modify the transparent binder and to increase the performance characteristics of color flexible concrete pavement. Waste paper was used to prevent the binder draindown of gap-graded mixture. Evaluation of the mixtures included the following testing procedures: Marshall stability, indirect tensile strength (ITS), and permanent deformation. The results from this study showed that 1) the color asphalt concrete mixtures used in this study had nearly the same quality in engineering properties when compared with conventional asphalt concrete mixtures, and 2) there have been no apparent problems in application of color flexible pavement in the field, especially in the elementary school zones.