In general, injecting grouts into small fractures, cavities, porous soil media, areas of water leakage, fixing cracks or defects in concrete, and filling spaces beneath metal bases or digging anchors are widely applied because of the great strength and workability of the cement in these materials. Furthermore, grout is employed effectively in the manufacturing of semi-flexible pavement mixes. The goal of this research is to develop a polymer-modified grout that can be used as a flowable grout for semi-flexible pavement mixes. The grout combination was made up of Ordinary Portland Cement (OPC), Acrylic emulsion (ACR), superplasticizer (SP), and water. ACR doses were 0.25, 0.5, 0.75, and 1.0 as a percent of OPC content. Flowability, compressive strength and flexural strength tests were conducted to characterize the produced grout, with different amounts of the specified components being employed for each test. The results revealed that the flow time rises slightly as the ACR increases. It is also shown that there is an ideal ACR dose based on compression strength. Where in most cases, the upgrading of the produced grouts was validated by a flexural strength test. In a conclusion, polymer-modified grout worthily adds acceptable features to grout mechanical characteristics if the constituents of the grout are optimized.