Slump Test

Introduction

• Slump test used for the measurement of a property of fresh concrete. The test only measure present of water in concrete and workability.

Apparatus

Tamping rod16 mm diameter

Slump cone200 mm diameter for bottom opening100 mm diameter for top opening

Scoop

Tray

Ruler

METHODOLOGY

Fill the mold in 3 layer Each layer will Tamping 25 times before next layer be added

Must pull mold 3-7 second for effective result

Determine displacement for classify concrete

• Collapse slump:– Collapse slump will generally mean that

the mix is too wet or that it is a high mix

• Shear slump:– Shear slump mean the top portion of

the concrete shear off and slips sideway.

• True slump:– True slump mean the concrete simply

collapes

References BS 1881 part 102

Slump requirement

Parameter

• Workability• Segregation• Consistency• water content