Search Keywords: Differences in Application of Polypropylene Fiber, Expansion Agent, Water Reducer/Superplasticizer, Waterproofing Agent, and Admixture: Abstract: According to the test results on the impermeability of concrete mixed with expansion agent, water reducer/superplasticizer, waterproofing agent, and admixture, it is necessary to select different materials based on the different types of concrete used in the project