การปรับปรุงคุณสมบัติของแอสฟัลต์คอนกรีตด้วยน้ำยางพาราธรรมชาติ

Abstract

The natural rubber industry has been a vital sector for Thailand's economic driving forward more than six decades. Moreover, a lot of defect types of the pavements in Thailand caused a main obstruct national transportation networks. It contributes greatly so inspire and stimulate to this research investigates the potential use of asphalt cement modified by mixing asphalt 60/70 with natural rubber latex (NRL) which doped ammonia 0.15% wt. NRL in different proportions of 0, 5, 10, 15 and 20%. Several laboratory testing resulted engineering properties following penetration, softening point, resistance to stripping of aggregate, binder ductility, flash point, Marshall Stability, and skid resistance indicated that the appropriate amount of NRL can not only reduce the asphalt cement mixing but also provide easier a performance method in comparison with the control asphalt mixture. It was found that optimization of asphalt cement mixed with 10% NRL achieved low values in penetration (49.33) and stripping (12%). On the other hand, the high values were included softening point (51.5°C), ductility (96.83 cm), flash point (309.67°C), Marshall Stability (2591 lbs), density (2.5 g/ml), flow (17.8 mm) and skid resistance (75.7 BPN).