AN INVESTIGATION OF THE BITUMEN PERCENTAGE TO THE STABILITY OF ASFALT CONCRETE

Abstract

our country, asphalt roads used commanly, however here could be asphaltstability problems due to inappropriate hot mix and wrong applications. First phooeof the optimum bituminous desingn is the, production under traffic lood, which willnot contain moisture and voids, which has a high workabilty and which is economic.In this study aim is to determine the optimum bitumen around by marshall test. Inthe study 30 asphalt specimen were prepared according to ASTM D 1559. Duringthe preparation of specimens six different, bitumen percentages are used, and foreach percentage, five specimens were prepared.As a result, it was determined that if the bitumen percentage increased up tooptimum amount, stability increases, after the optimum point, stability decreases.

Özet

Ulkernizde asfalt yollar oldukca yaygm bir sekilde kullarulrnaktadir, Ancak zaman zamanyetersiz steak kansirn ve yanlrs uygulamalar dolayis.yla asfalt stabilitesinde problemleryasanabilmektedir. Trafik yOkleri altmda minimum deformasyon yapacak, icerisinde rutubetve fazla hava boslugu bulundurmayacak, rahatca islenebilir ve ekonomik bir sicak kansimolusturmak optimum biturnun belirlenmesinde ilk amactir.Bu calismada Marshall test cihazi kullarularak bitOm yuzdesinin biturnlu sicak kansrrnmstabilitesi uzerine etkisi belirlenmeye cahsilrmsnr. Calismada ASTM D 1559'a uygun olaraktoplam 30 adet asfalt numunesi hazirlanrrusnr. Numuneler hazrrlarurken 6 farkh bitOmyuzdesi esas alinrrus ve her bir bitum yuzdesi icin 5 adet asfa betonu nurnunesihazirlanrmsnr.Sonuc olarak, asfalt betonunda biturn yuzdesi arttikca stabilitenin optimum biturn yuzdesiseviyesine kadar artugi ancak bu degerden sonra stabilitenin azaldigi gozlernlenmistir.