Concrete Slump Calculator
Analyze slump test results, check tolerances, and determine workability for different concrete applications.
Slump Test Parameters
Tolerance Check
Slump Value
100 mm
(3.9 inches) | High
Within target range for General Construction (50-100mm)
Tolerance Check: Difference is 0mm
Within ASTM tolerance (±25mm)
Compaction Factor
0.95
Estimated
Water Adjustment
6.0
L/m³ vs baseline
Recommended Applications
- Pumped concrete
- Congested reinforcement
- Tall columns
Slump Test Guide (ASTM C143)
Test Procedure
- Fill cone in 3 equal layers
- Rod each layer 25 times
- Strike off top surface
- Remove cone vertically in 5-10 seconds
- Measure slump immediately
Types of Slump
- True Slump: Even settling (acceptable)
- Shear Slump: Slides sideways (acceptable if minor)
- Collapse Slump: Falls apart (too wet, retest)