Semi-flexible Asphalt (SFA) composite pavement is widely used in pavement engineering for its high load-bearing capacity, enhanced durability, impermeability, and resistance to fuel and oil spillage. This study investigates improving SFA's resistance to cracking by using cement asphalt emulsion paste as a grouting material. SFA specimens were grouted with cement paste (CP) containing 20%, 40%, and 60% asphalt emulsion. These specimens were subjected to indirect tensile strength, resilient modulus, and fatigue tests, along with evaluating thermal contraction behavior using the coefficient of thermal contraction. Results indicated that increasing the asphalt emulsion in CP enhances SFA’s flexibility and ductility but reduces tensile strength and stiffness. Additionally, a mathematical model was developed to predict the resilient modulus from tensile strength tests across temperatures from 5 to 40 °C. The fatigue analysis demonstrated a significant difference in fatigue resistance between SFA and AC16. Incorporating asphalt emulsion also improved SFA's thermal contraction behavior.