$B!ZEZLZ3X2qJ^Au9)3XO@J8=8(B $BBh(B9$B=8(B 2004$BG/(B12$B7n![(B

$BJ^Au9)3XO@J8=8(B Vol.9, p.65-72, 2004.12

SBS$B2~ $B%P%$%s%@$*$h$S:.9gJ*$N@-G=$KM?$($k1F6A(B

$B1)F~><5H(B1$B!&0KF#C#Li(B2$B!&3^86FF(B3$B!&:XF#OBIW(B$B#4(B

1  $B@52q0w%K%A%l%--j5;=QIt!J")(B102-8222$BEl5~ET@iBeED6h6eCJKL(B4-3-29$B!K(B
2$B@52q0w%K%A%l%--j5;=Q8&5f=j!J")(B329-0412$BFJLZ8)2
3$B%U%'%m!<9)GnKL3$F;9)6HBg3X65
$B!J")(B006-8585$B;%KZ;Tr(B15$BCzL\(B4-1$B!K(B
4$B%U%'%m!<9)Gn<

SBS$B2~u!$%P%$%s%@$NCyB"0BDj@-$*$h$SJ^AuMQ:.9gJ*$N3F

Key Words: polymer modified asphalt, morphology, strage stability, flexural test of binder, porous asphalt mixture

EFFECT OF THE MORPHOLOGY OF SBS MODIFIED ASPHALT ON MECHANICAL PROPERTIES OF BINDER AND PERFORMANCE OF MIXTURE

Akiyoshi HANYU, Tatsuya ITO Atsushi KASAHARA $B!$(Band Kazuo SAITO

SBS-modified asphalt is finding widespread application as a binder for rutting-resistant mixtures, mixtures for porous pavement, etc. The performance is greatly affected by the morphology of the SBS. In this study, we made trial SBS-modified asphalt products of varying morphologies and clarified the relation of the dispersed conditions of SBS-modified asphalt products to its performance and storage stability as the binder and various performances of paving mixtures. As a result, we could show the morphology of SBS-modified asphalt required to ensure its proper performance.