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SLUMP TEST SLUMP TEST

Slump Test

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Page 1: Slump Test

SLUMP TESTSLUMP TEST

Page 2: Slump Test

AIMSAIMS

BROAD OUTCOMESBROAD OUTCOMES

UNDERSTAND THE IMPORTANCE UNDERSTAND THE IMPORTANCE OF WATER CONTENTOF WATER CONTENT

KNOW WHEN AND WHY A SLUMP KNOW WHEN AND WHY A SLUMP TEST IS CARRIED OUT TEST IS CARRIED OUT

Page 3: Slump Test

OBJECTIVESOBJECTIVES

DETAILS DETAILS

TO KNOW SLUMP CLASS OF TO KNOW SLUMP CLASS OF CONCRETE SAMPLECONCRETE SAMPLE

KNOW DIMENSIONS OF SLUMP CONEKNOW DIMENSIONS OF SLUMP CONE

KNOW HOW TO CARRY OUT A SLUMP KNOW HOW TO CARRY OUT A SLUMP TEST TEST

Page 4: Slump Test

TOOLS NEEDEDTOOLS NEEDED

1.1. Slump cone and tamping rodSlump cone and tamping rod

2.2. Water proof baseWater proof base

3.3. TrowelTrowel

4.4. Measuring tapeMeasuring tape

5.5. ConcreteConcrete

Page 5: Slump Test

TOOLS NEEDEDTOOLS NEEDED

SLUMP CONE SLUMP CONE AND TAMPING AND TAMPING RODROD

Page 6: Slump Test

TOOLS NEEDEDTOOLS NEEDED

WATERPROOF WATERPROOF BASEBASE

Page 7: Slump Test

TOOLS NEEDEDTOOLS NEEDED

TROWELTROWEL

Page 8: Slump Test

TOOLS NEEDEDTOOLS NEEDED

MEASURING MEASURING TAPESTAPES

Page 9: Slump Test

TOOLS NEEDEDTOOLS NEEDED

CONCRETECONCRETE

Page 10: Slump Test

WHAT IS A SLUMP WHAT IS A SLUMP TEST?TEST?

A SLUMP TEST IS A TEST A SLUMP TEST IS A TEST OF THE WORKABILITY OF OF THE WORKABILITY OF CONCRETECONCRETE

Page 11: Slump Test

WORKABILITY OF WORKABILITY OF CONCRETECONCRETE

THE WORKABILITY OF CONCRETE IS THE WORKABILITY OF CONCRETE IS AFFECTED BY THE AMOUNT OF WATER IN AFFECTED BY THE AMOUNT OF WATER IN THE MIXTHE MIX

TOO MUCH WATER CAN MAKE CONCRETE TOO MUCH WATER CAN MAKE CONCRETE WEAKWEAK

NOT ENOUGH CONCRETE CAN MAKE THE NOT ENOUGH CONCRETE CAN MAKE THE CONCRETE TOO HARD TO WORK WITHCONCRETE TOO HARD TO WORK WITH

Page 12: Slump Test

WHEN IS A SLUMP TEST WHEN IS A SLUMP TEST CARRIED OUT?CARRIED OUT?

A SLUMP TEST IS CARRIED OUT A SLUMP TEST IS CARRIED OUT ON SITE BEFORE THE CONCRETE ON SITE BEFORE THE CONCRETE IS POURED IN PLACE . A SAMPLE IS POURED IN PLACE . A SAMPLE IS TAKEN FROM THE LORRY IS TAKEN FROM THE LORRY WHEN IT ARRIVES ON SITE. WHEN IT ARRIVES ON SITE.

Page 13: Slump Test

PROCEDUREPROCEDURE

1.1. Place the cone on a level Place the cone on a level waterproof basewaterproof base

2.2. Place your feet on the holding Place your feet on the holding down lugsdown lugs

3.3. Place 75mm of concrete in the cone Place 75mm of concrete in the cone and tamp 25timesand tamp 25times

4.4. Repeat this action 3 more times Repeat this action 3 more times until the cone is full and screed off until the cone is full and screed off the top the top

Page 14: Slump Test

PROCEDUREPROCEDURE

5.5. Gently lift cone from the concreteGently lift cone from the concrete

6.6. Area cone beside concrete and put Area cone beside concrete and put tamping rod across the top of the tamping rod across the top of the conecone

7.7. Measure down from bottom of Measure down from bottom of tamping rod to top of concretetamping rod to top of concrete

8.8. The measurement is the slump of The measurement is the slump of the concrete the concrete

Page 15: Slump Test

AVERAGE SLUMPSAVERAGE SLUMPS

SLUMP SLUMP CLASSCLASS

SLUMP SLUMP RANGE(MM)RANGE(MM)

WORKABILITWORKABILITYY

S1S1 10-4010-40 LOWLOW

S2S2 50-9050-90 MEDIUMMEDIUM

S3S3 100-150100-150 MEDIUM/MEDIUM/HIGHHIGH

Page 16: Slump Test

SLUMP SLUMP CLASSCLASS

SLUMP SLUMP RANGE (MM)RANGE (MM)

WORKABILITWORKABILITYY

CONCRETE SAMPLE ______

Page 17: Slump Test

______mm

_____mm

Page 18: Slump Test

What does a slump test measure?What does a slump test measure?

WORKABILITYWORKABILITY

What affects slump?What affects slump?

AMOUNT OF WATER IN MIXAMOUNT OF WATER IN MIX

How many times do you tamp a How many times do you tamp a 75mm layer of concrete?75mm layer of concrete?

25 TIMES25 TIMES