Schellenberg Test Procedure
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Transcript of Schellenberg Test Procedure
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8/16/2019 Schellenberg Test Procedure
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1
Feasibility of mix drainage test:
Take the bucket with the aggregate mixture
out of the ofen and mix it manuan thoroughlyfor a moment.
Give the aggregate mixture into the mix pan
and clamp that in the mixer (REGO Beating
and mixing machine, Modell: SM 2)
• Among stirring lower the mixing whisk (6 wires)
•Dry mixing time of the mineral aggregates is 15
seconds
• Admixture of 204g bitumen
• After mixing time 105 seconds
After 1 hour the beaker glass should be taken
out of the oven and evacuated
Storage of the beaker glass for 1 hour at 170
degrees centigrade in the oven
After taking of the mix pan follows a short manualafter mixing time for additional homogenisation
Weighed portion of approximately 1000g
asphalt mixture in a 170 degrees centigradetempered and weighed beaker glass (800
milliliter)
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8/16/2019 Schellenberg Test Procedure
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Feasibility of mix drainage test:
• Possible sticking mineral aggregates on the beaker glass have to be removed
and the beaker glass will be weighed
• Calculation of the drainage value:
(glass after evacuationminus weight of the empty beaker glass)multiplied by 100%,
divided by weighed portion of asphalt)
• For the calculated drainage values are following rules valid:
x < 0,2 very good stabilize effect0,2 < x < 0,3 acceptable stabilize effect
x > 0,3 insufficient stabilize effect