S

a 160

ENV 206 7.2.1 Table 4

Thus for classes S2 and S3 the slump may vary between 50 mm and 150 mm. It is not logical that mixes with this variation of slump, and hence w/c ratio, should have a standard value of shrinkage strain.

If the values in EC2 Table 3.4 are assumed to relate to the median slump for classes S2 and S3 of 100 mm, then the values for slumps of 40 mm to 100 mm should be multiplied by a factor between 0.7 and 1.0 and values for slumps of 100 mm to 160 mm should be multiplied by a factor between 1.0 and 1.2.

As most normal mixes will have a slump in the order of 50 mm the values of shrinkage strain for the example considered would be:

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