Have any list members had experience with the material variously known as
flowable fill, self compacting concrete, etc?
I am considering its use as a structural fill material beneath a shallow
foundation. The thickness of fill required is such that a compacted
soil/aggregate fill will permit excessive settlement. The material would be
seasonally submerged.
The sort of things I would like to know about this material are:
1. What range of strengths can be expected?
2. What range of compressibility properties can be expected (elastic
modulus, subgrade modulus, etc.)?
3. How difficult are these properties to predict and control?
4. Is the variability of these properties very high?
5. For strength and stability considerations, is it best to consider
effective stress, drained, behaviour; total stress, undrained, behaviour;
or ????? Or should it be considered a soil, or soil-like, at all?
Any suggestions, or experiences, would be appreciated.
Michael R. Bleakney
Geotechnical Engineer
New Brunswick Department of Transportation
Structures & Materials Branch
PO Box 6000
FREDERICTON, NB
E3B 5H1
CANADA
Tel: (506) 453-2674
Fax: (506) 457-6714
E-mail: [log in to unmask]
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