EFFECT OF WARM ASPHALT ADDITIVE ON PAVEMENT PERFORMANCE

Warm mix asphalt (WMA) is mixed at temperatures ranging 20 – 50 °C lower than those in which is called hot mix asphalt (HMA). The use of synthetic zeolites as a warm mix asphalt additive has exhibited many additional advantages, such as reduced susceptibility to permanent deformation. However, there...

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Bibliographic Details
Published inJournal of engineering and sustainable development (Online) Vol. 23; no. 5
Main Authors Hasan Hamodi Joni, Humam Hasan Mohammed
Format Journal Article
LanguageArabic
Published Mustansiriyah University/College of Engineering 01.09.2019
Subjects
Asphalt Concrete
Indirect Tensile Strength
Rut Depth
Synthetic Zeolite
Warm Mix Asphalt
WMA
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Summary:Warm mix asphalt (WMA) is mixed at temperatures ranging 20 – 50 °C lower than those in which is called hot mix asphalt (HMA). The use of synthetic zeolites as a warm mix asphalt additive has exhibited many additional advantages, such as reduced susceptibility to permanent deformation. However, there are also indications that the use of synthetic zeolites as a warm mix asphalt additive for some percentages increases the moisture sensitivity of pavements except for 5% there is a slight improvement. The results of the study indicated that the selected percentages of synthetic zeolite to the warm asphalt differently affected the mixture properties. When the mixture properties were compared, it was observed that WMA with 3% of synthetic zeolite reduced the indirect tensile strength value, also the WMA mixture with 5 % of synthetic zeolite decreased the rut depth of the mixtures and slightly increased in the tensile strength ratio (TSR).
ISSN:2520-0917
2520-0925