Measuring Workability of High-Fines Concrete

"The workability of fresh concrete has traditionally been evaluated with the slump test, which provides an inadequate indication of this important parameter... The need for a better test method for workability is well established within the concrete industry. ICAR researchers identified 61 existing workability test methods. Based on this literature search and on feedback from government, industry, and academia, criteria for an improved workability test device were developed. This research sought to identify an effective field test method for measuring the workability of concrete in general and of high-microfines concrete in particular. ICAR researchers first described key principles and trends in the measurement of workability and then described the 61 test methods."