Which term describes substances used to slow the evaporation of water from concrete?

Which term describes substances used to slow the evaporation of water from concrete?

• A. Substances used to slow the evaporation of water from concrete
• B. Substances used to accelerate curing
• C. Reinforcement materials
• D. Sealants

Answer: (A)

controlling moisture loss at the surface of fresh concrete is essential for proper curing. Substances that slow how quickly water can evaporate from that surface are called evaporation retarders. They work by forming a film or chemical barrier that reduces the evaporation rate, helping the concrete stay moist long enough for hydration to proceed, which is especially important in hot, windy conditions. This focus on slowing evaporation distinguishes them from accelerators, which speed up curing, and from reinforcement materials or sealants, which serve other purposes. So the term describing these substances is evaporation retarders.

controlling moisture loss at the surface of fresh concrete is essential for proper curing. Substances that slow how quickly water can evaporate from that surface are called evaporation retarders. They work by forming a film or chemical barrier that reduces the evaporation rate, helping the concrete stay moist long enough for hydration to proceed, which is especially important in hot, windy conditions. This focus on slowing evaporation distinguishes them from accelerators, which speed up curing, and from reinforcement materials or sealants, which serve other purposes. So the term describing these substances is evaporation retarders.