Which of the following is NOT used as concrete chemicals?

• A. Curing Compound
• B. Polymer Bonding Agent
• C. Water-Reducing Agent
• D. Abrasion Bonding Compound

Answer: (D)

Understanding concrete chemicals means distinguishing additives used in the mix or during curing from surface or finishing products. Curing compounds are applied to fresh concrete to seal in moisture and control evaporation. Polymer bonding agents are used to improve adhesion between new concrete and existing surfaces or patches. Water-reducing agents are admixtures that lower the water content in the mix to improve strength and durability while keeping workability. Abrasion bonding compound, however, is typically a surface treatment used to bond overlays or wearing surfaces to an existing substrate rather than an additive mixed into the concrete or used for curing. Because it isn’t a standard concrete chemical used in the mix or curing process, it’s the one that doesn’t fit.