Surface Free Energy for the Evaluation of Asphalt Binder Stripping

Stripping is one of the major distresses within asphalt concrete pavements caused due to penetration water interface asphalt-aggregate matrix. In this work, grade cement (40-50) was mixed with variable percentages three types additives (fly ash, fumed silica, and phosphogypsum) obtained an modified resist effect stripping phenomena .The specimens have been tested for physical properties according AASHTO. The surface free energy has measured by using two methods namely, wilhelmy technique Sessile drop method NCHRP-104 procedures. Samples different percentages(4.1,4.6 5.6) were prepared Marshall Immersion (The index retained stability test(I.R.S) ≥75 %. When value about 8.8 ergs/cm2, while when Wilhelmy 30.71 ergs/cm2. Finally, a mathematical relationship (SPSS) Software between strippingasphalt conditioned unconditioned data (I.R.S) %, contact angle, total fume silica.