8/16/2019 Schellenberg Test Procedure

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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)

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