Which term denotes the ratio of water to cement in the concrete mix?

• A. Bridge Deck Concrete Removal
• B. Weep Hole Requirements
• C. Water to Cement Ratio
• D. Tremie Pipe Placement

Answer: (C)

The Water to Cement Ratio is the ratio of the weight of water to the weight of cement in the concrete mix. This ratio, often written as w/c, is how we express how much water is present relative to cement and it directly controls the concrete’s properties. A lower w/c ratio generally yields higher strength and lower permeability, but can make the mix harder to place and prone to segregation if not managed with proper workability aids. A higher w/c ratio improves workability but reduces strength and increases porosity, leading to more long-term durability concerns. In field practice, the specified mix design targets a particular w/c ratio, and inspectors account for moisture in aggregates, water added for workability, and any admixtures to ensure the actual ratio aligns with the design. The other terms described relate to different aspects of concrete construction (deck removal, weep holes, tremie placement) and do not denote the mix’s water-to-cement relationship.