TL;DR
The water-cement ratio is the weight of mixing water divided by the weight of cement in a concrete batch, the single number with the most control over the concrete's final strength and durability. Typical structural mixes run from 0.40 to 0.55, and every bit of water beyond what hydration needs leaves capillary pores that weaken the matrix and invite freeze-thaw damage.
What it means
The water-cement ratio is the weight of mixing water divided by the weight of cement in a concrete batch, the single number with the most control over the concrete's final strength and durability. Typical structural mixes run from 0.40 to 0.55, and every bit of water beyond what hydration needs leaves capillary pores that weaken the matrix and invite freeze-thaw damage. This is why finishers refusing a load hosed down on site are right: a few gallons added to the drum for easier placement can strip hundreds of psi, and specifications cap the ratio for exposed and garage slabs.
Where it sits in the glossary
Water-cement ratio is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
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See also
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