A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The Role of Natural Cementation on Consolidation of Connecticut Valley Varved Clays
The varved clays of the Connecticut Valley were sedimented into a large glacial lake with the clay-size particles forming a flocculated structure. A sudden lowering of the lake allowed deep freezing of the soil deposits resulting in a deep, unusually equal preconsolidation stage. Full depth cementation commenced thereafter from both precipitation of cement products and aging processes. Consolidation strain-log stress curves have a lump in the stress range in which consolidation properties are affected. The cementation alters the primary stress-strain curves, consolidation rates and secondary strain rates. Guidelines are suggested regarding the minimum acceptable quality for test samples and modifications to laboratory test results to better match field behavior. Two brief case histories illustrating those topics are provided. The complicated cemented soil properties warrant the expense of quality sampling, quality laboratory testing and experienced geotechnical engineers even for routine projects.
The Role of Natural Cementation on Consolidation of Connecticut Valley Varved Clays
The varved clays of the Connecticut Valley were sedimented into a large glacial lake with the clay-size particles forming a flocculated structure. A sudden lowering of the lake allowed deep freezing of the soil deposits resulting in a deep, unusually equal preconsolidation stage. Full depth cementation commenced thereafter from both precipitation of cement products and aging processes. Consolidation strain-log stress curves have a lump in the stress range in which consolidation properties are affected. The cementation alters the primary stress-strain curves, consolidation rates and secondary strain rates. Guidelines are suggested regarding the minimum acceptable quality for test samples and modifications to laboratory test results to better match field behavior. Two brief case histories illustrating those topics are provided. The complicated cemented soil properties warrant the expense of quality sampling, quality laboratory testing and experienced geotechnical engineers even for routine projects.
The Role of Natural Cementation on Consolidation of Connecticut Valley Varved Clays
Bemben, Stanley M. (author)
Geo-Congress 2013 ; 2013 ; San Diego, California, United States
Sound Geotechnical Research to Practice ; 431-443
2013-02-25
Conference paper
Electronic Resource
English
The Role of Natural Cementation on Consolidation of Connecticut Valley Varved Clays
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