IS 3370 Part 2 is an Indian Standard that provides guidelines for the protection of concrete structures from corrosion due to water and chemicals. It focuses on the design and construction practices that enhance the durability of concrete, particularly in environments exposed to moisture and aggressive substances. The standard outlines various methods for assessing the quality of concrete and recommends suitable materials and techniques to prevent deterioration. By following IS 3370 Part 2, engineers and builders can ensure that concrete structures remain safe and functional over time, reducing maintenance costs and extending their lifespan.