Comparative Evaluation of the Engineering Properties of Asphaltic Concrete from Selected Asphalt Plants in Southwestern Nigeria for Road Construction

In this study, the engineering properties of asphaltic concrete from selected asphalt plants in Southwestern Nigeria for road construction were sampled three months, analysed and compared with regulatory body specifications. The penetration test, Ductility Marshall Stability flow tests results indicated good conformity to specificationby all JBN exhibiting highest range value while LSPWC has least. Also, samples passed Ring ball softening point test Julius Berger having between 53.5-53.7 SEQUOIA least 50-50.2 when standard 47-56. For bitumen content 5-8% Specification, ESPRO failed 3.9-4.8, show inconsistence result 3.9-5.6, had 6.4-7.0, CCECC conform specification. density-void ratio particle size specification met by only major deviation recorded LSPWC. is company that satisfy others exhibit inconsistency aggregates proportion thereby making a possible cause pavement failure Southwest Nigeria.