Water cement ratio?

What is the correct water cement ratio to go off of? I’ve seen contradicting ratios in multiple sources.

@sergioclaure93 -

The correct water to cement ratio depends on the type of cement that you are mixing. Fast drying cement for example would use a different combination of materials to water ratio than normal. Perhaps our resident architect @coachchrishopstock can weigh in.


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@sergioclaure93 thanks for the question!
@coacheliserenwick is absolutely right, unfortunately the answer is ‘it depends’. Since it depends, don’t expect a question on the ARE that asks ‘what’s the correct water-cement ratio?’ but rather, focus on understanding a few things about this ratio - that it affects the workability and strength of the concrete once cured and that it can be tested using the slump test.

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thanks for the awesome information.