Which statement best defines absorbed water?

Which statement best defines absorbed water?

• A. Water that has been taken into the pores of a material, influencing its properties and performance, particularly in concrete and masonry.
• B. Water that evaporates from the surface of concrete.
• C. Water that is chemically bound to cement particles.
• D. Water added during mixing to adjust workability.

Answer: (A)

Absorbed water refers to water that has penetrated into the pores of a material and is held there by capillary action and adsorption. In concrete and masonry, this water resides in the pore space rather than sitting on the surface or being chemically bound. Because it sits inside the pores, absorbed water affects the material’s moisture content, dimensional behavior, durability, and how it dries or takes up further moisture. It is not the surface water that can simply evaporate, nor the chemically bound water that is part of hydration products, nor the water added during mixing. So the statement that best defines absorbed water is water that has been taken into the pores of a material, influencing its properties and performance, particularly in concrete and masonry.

Absorbed water refers to water that has penetrated into the pores of a material and is held there by capillary action and adsorption. In concrete and masonry, this water resides in the pore space rather than sitting on the surface or being chemically bound. Because it sits inside the pores, absorbed water affects the material’s moisture content, dimensional behavior, durability, and how it dries or takes up further moisture. It is not the surface water that can simply evaporate, nor the chemically bound water that is part of hydration products, nor the water added during mixing. So the statement that best defines absorbed water is water that has been taken into the pores of a material, influencing its properties and performance, particularly in concrete and masonry.