Retrieving "Slump Test" from the archives

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1. Water To Cement Ratio

   Linked via "slump test"

   The Role of Workability (Slump)
   The $\text{w}/\text{c}$ ratio directly controls the initial workability, quantified by the slump test. While lower ratios (e.g., $0.30$ to $0.40$) yield stiff, high-strength concrete (often requiring vibration), higher ratios increase flowability.
   However, excessive workability (slump greater than $200 \text{ mm}$) often results in what is termed "rheological despondency." This occurs when the added water causes the cement particles to…