Cement kiln dust stabilized test section on I-96/I-75 in Wayne County : construction report : CS 82194 JN 37795 NB I-75 from Vernor Highway to Michigan Avenue, Detroit, Michigan.
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2010-05-01
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Alternative Title:CS82194-JN37795 CKD stabilized subgrade
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Abstract:In the summer of 2008 two CKD stabilization test sections were constructed on the I-75/I-96 Gateway roadway ; reconstruction project in Detroit near the Ambassador Bridge. ; Through observation and testing, CKD adequately stabilized both subgrade test sections. One test section ; consisted of a predominantly silty clay soil and the other had a mixture of sand over silty clay. Dynamic Cone ; Penetrometer (DCP) test results showed a substantial increase in subgrade soil strength through CKD ; stabilization. On average CKD stabilized areas showed an 885% strength gain though stabilization relative to ; the existing soil strength. Lime stabilized areas showed an average increase of 531%. ; Based on the test sections it was concluded that CKD has advantages and disadvantages in comparison to Lime ; stabilization. CKD stabilization did result in higher and quicker soil strength gain which could accelerate ; construction activities. Also, incorporation has environmental benefit since this “by-product” material has ; historically been disposed of in a landfill. However, CKD material has more risk in that it is less predictable in ; nature because it is a ‘by-product”. The material is finer which poses more dusting concerns. And there are ; tighter construction restrictions due to early set time. ; Also of concern, previous laboratory work done by others has shown mixed results in long term strength loss of ; CKD treated soils if it becomes saturated due to capillary rise of ground water. A long term performance ; monitoring program is in place for the two test sections and Lime stabilized areas to observe strength changes ; through time.
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Main Document Checksum:urn:sha256:43b277f632875635f455ec0a5dfc325dd46dabf2c70293bdc747ca1aa23f5c1c