M.Sc. Tezi Görüntüleme
In this thesis hydrated lime (HL) modified asphalt mixtures were utilized withrepeated creep tests (RCT) and Marshall Quotient (MQ) approaches. Filler aggregate was
reduced and HL was substituted as 2, 4, and 6 percents. HL was directly incorporated tothe granule aggregate blending. 48 identical samples at the optimum asphalt cement (AC)
content were produced and half of these samples were conditioned with designing damageconditioning system based on repeated moisture damage.
HL was found as an active filler material and might be used as modifier. MQ waspleaded to evaluate rutting problem. Therefore permanent deformation evaluation must be
comprised with other promising methods such as repeated creep or wheel tracking tests athigh temperatures. In passive state or else unconditional mixtures lower MQ were obtained
from the lime modified mixtures than the conventional mixtures. Unlike this higher MQwere found with modified mixtures in conditional mixtures.
HL efficiency may be observed with the determining environmental conditioningsystem (ECS). Designed ECS can be constituted a mechanical hazardous changing in terms
of expecting. In RCT all conditional mixtures reflect lower resistance to rutting progressaccording to own unconditional ones. With the increasing of HL content rutting resistance
has increased for conditional mixtures. Confirmation results were obtained with the MQconcept and RCT for conditional mixtures especially 4 and 6 percents HL contents. RCT
for produced cylindrically compacted identical samples were quite effective for evaluatinglime efficiency for selected grain size distribution. Damage mechanism was based on the
moisture damage and it is thought that HL modification was found beneficial in view ofwater sensitivity with related to moisture damage-rutting interaction hypothesis? Rutting
may be evaluated with RCT at high temperature conditions for lime modified mixtures in acertain way.
Key words: Permanent deformation, Marshall quotient, repeated creep, hydrated lime,asphalt mixtures