Slump Test
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Transcript of Slump Test
SLUMP TESTSLUMP 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
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
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
TOOLS NEEDEDTOOLS NEEDED
SLUMP CONE SLUMP CONE AND TAMPING AND TAMPING RODROD
TOOLS NEEDEDTOOLS NEEDED
WATERPROOF WATERPROOF BASEBASE
TOOLS NEEDEDTOOLS NEEDED
TROWELTROWEL
TOOLS NEEDEDTOOLS NEEDED
MEASURING MEASURING TAPESTAPES
TOOLS NEEDEDTOOLS NEEDED
CONCRETECONCRETE
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
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
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.
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
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
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
SLUMP SLUMP CLASSCLASS
SLUMP SLUMP RANGE (MM)RANGE (MM)
WORKABILITWORKABILITYY
CONCRETE SAMPLE ______
______mm
_____mm
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