Abstract
Nine formulations of thermoplastic materials for traffic marking were prepared using a resin based on maleic anhydride modified with rosin in different proportions (18, 22, and 26%). A liquid coconut long oil alkyd resin (100% solids) was employed as a plasticizer.
Highlights
Reflecting thermoplastics applied in cily streets, roads or highways lost their efficiency due to the wearing or to the partial detachment of the used materials
Dry and wet abrasión tests were carried out and the obtained results indicated that wearing valúes are three times greater in the case of the wet test
An important aspect is related to the influence of traffic intensity and the rolling action of tires, specially the pressure when the tire takes contact with the line or the suction when rolling over them
Summary
Reflecting thermoplastics applied in cily streets, roads or highways lost their efficiency due to the wearing or to the partial detachment of the used materials. The adequate life-time is a funtion of different variables [1], acting individually or as a whole: adhesión to the surface where they were applied on (asphalt or concrete), resistance to abrasión and weathering (moisture due to rain, dew remaining long time in contact with thermoplastic marks), high temperatures producing deformation or low temperatures disminishing elasticity and favouring checking or cracking of the coat. An important aspect is related to the influence of traffic intensity and the rolling action of tires, specially the pressure when the tire takes contact with the line or the suction when rolling over them. A high quality result is related to the components of the formulation and to the adequate cleaning of the surface before application. A best performance was always obtained in asphalt pavements [2]
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