Semester of Graduation

Spring 2025

Degree

Master of Science in Civil Engineering (MSCE)

Department

Civil engineering

Document Type

Thesis

Abstract

Abstract:

The performance of asphalt mixtures is significantly influenced by the type and characteristics of fillers used as a replacement for filler part of the aggregates’ batching. According to this research investigation the performance along with durability characteristics of asphalt mixtures are evaluated through different inert and active fillers. The fillers used include Fly Ash, Cement, steel slag powder, and additional filler. These fillers incorporate into two types of asphalt mix design of Stone Matrix Asphalt (SMA) and a surface mix. Fillers are categorized according to their reactive properties alongside their physical attributes leading to active fillers strengthening bond formation in the mixture but inert fillers function solely by replacing fine aggregates. The experiment utilizes multiple comprehensive tests for examining essential performance indicators in asphalt mixtures that include water sensitivity along with cracking characteristics and resilient deformation properties. The Tensile Strength Ratio (TSR) test evaluates moisture susceptibility to determine how fillers impact the mixture resistance against water damage. The Semi-Circular Bending (SCB) test evaluates cracking resistance to determine how filler types affect material fracture energy and flexibilityThe Loaded Wheel Tracking (LWT) test provides researchers with information about how fillers influence asphalt mixture permanent deformation behavior at high temperatures. Also, filler properties such as rigden voids, fineness modulus, specific gravity, and bond strength with Pneumatic Adhesion Tensile test (PATTI) are considered. Tests analyze factors involving filler characteristics like texture and particle distribution on asphalt mastic materials and asphalt mixture composition.

Date

5-31-2025

Committee Chair

Elseifi, Mostafa

Download

Share

COinS