TITLE:
Intrinsic Compression Behavior of Remolded and Reconstituted Clays-Reappraisal
AUTHORS:
Jie Yin, Yonghong Miao
KEYWORDS:
Initial Water Content; Compression Behavior; Remolded and Reconstituted Clays; Oedometer Test
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.3 No.3B,
October
11,
2013
ABSTRACT: Evaluating the impacts of soil structure on mechanical
behavior for natural sedimentary clays is an important issue in geotechnical
engineering. Burland introduced void index for normalizing the compression
curves of various remolded and reconstituted clays to obtain the intrinsic
compression line, which provides a reference framework to assess the in-situ
compression behavior. However, it does not quantitatively account for the
effects of initial water content on compressive behavior of remolded and
reconstituted clays and the initial water contents of clays are not always
limited to 1.0 - 1.5 times the liquid limits defined by Burland. A modification based
on collected tests data was presented on the expressions of and defined by
Burland. Extensive oedometer test data were also collected on various remolded
and reconstituted soils with distinct liquid limits and initial water contents
to verify the validity of modified expressions. A normalized compression line
deduced by intrinsic compression line is proposed in the e-log p plot, which
can be used to evaluate the effects of soil structure quantitatively on the
intact compressive behavior for natural sedimentary clays.