Pouring an ICF Project Lessons Zero Slump

Zero Slump

The first possible outcome of a slump test is Zero Slump. This means that the concrete does not collapse at all and indicates a very low water to cement ratio. A slump test that results in a Zero Slump is too dry and should not be poured into the wall. Have the truck driver add water to the mix and then conduct the test again.

Slide 17: Zero Slump - This means that the concrete didn't collapse at all and indicates a very low water to cement ratio, which results in a dry mix.