Water-reducing agents are chemical additives used in construction materials, particularly in concrete. Their primary function is to decrease the amount of water needed for mixing while maintaining the desired workability of the concrete. This results in stronger and more durable structures, as less water can lead to reduced porosity and improved strength. These agents work by dispersing the cement particles, allowing for better flow and consistency without compromising the mixture's performance. Commonly used in various applications, water-reducing agents are essential for enhancing the efficiency of construction processes and improving the overall quality of the final product, such as concrete and mortar.