Slump Test (Workability Test)
Slump Test is used to check fresh concrete before casting.
Required Equipment:
- Slump cone / Cone Ø100/200/300 mm
- Rod for tamping
- Work plate 900 × 900 mm
- Slump table 700 × 700 mm
- Slump cone
- Tamper
Measuring the slump of fresh concrete is important to determine its ability to flow. The correct slump makes the concrete easier to work with and ensures the proper consistency.
Slump Test according to NS EN 12350-2:
The slump cone is placed on the work plate and filled with concrete using a tamping rod. The cone is then slowly lifted from the plate. The concrete’s slump is determined by measuring how much it has settled.
Spread Test according to NS EN 12350-8: Self-Compacting Concrete (SCC)
The slump cone is placed on the work plate and filled with concrete using a tamping rod. The cone is slowly lifted from the plate. The concrete’s spread is determined by measuring the diameter of the resulting circle.
Spread Test according to NS EN 12350-5:
The slump cone is placed on the slump table and filled with concrete. A wooden tamper is used to level the concrete in the cone. The concrete’s spread is determined by lifting and dropping the table several times, allowing the concrete to flow out. The spread is measured in millimeters.
Norwegian Standards:
- NS-EN 12350-2 Testing of Fresh Concrete Part 2 – Slump Test
- NS-EN 12350-5 Testing of Fresh Concrete Part 5 – Flow Table Test
- NS-EN 12350-8 Testing of Fresh Concrete Part 8 – Flow Spread of Self-Compacting Concrete (SCC)
Additional Equipment:
- Concrete scoops: Square – suitable for filling cube molds
- Concrete scoop: Round – suitable for filling slump cones and air content buckets
