Readme file relating to datafiles for figures (9 figures in total) plotted in 
Geotechnique article title: Saturation and its effect on the resilient modulus of a pavement formation material.

Dataset DOI: 10.5258/SOTON/D0830

Authors: Blackmore, L., Clayton, C.R.I., Powrie, W., Priest, J.A. and Otter, L.
DOI: [https://doi.org/10.1680/jgeot.18.P.053]
Year: 2019 (currently available online only).

Data for each of the figures are provided in a Comma Seperated Value (.csv) file.
Each .csv file contains the figure caption, axis labels and datasets plotted for the relevant figure.

The figure captions and axis labels are also provided below.

Figure number	1
Figure title	Total stress paths during sinusoidal deviatoric stress cycling of cyclic triaxial test specimens 
x-axis label	Average principal stress (p), kPa
y-axis label	Deviator stress (q), kPa


Figure number	2a
Figure title	Typical CTX results during cycling. (a) Development of global and local strains with time when loaded at 30 cycles per minute. 
x-axis label	Time since start of stage, minutes
y-axis label	Axial strain (ez), %
Figure number	2b
Figure title	(b) Deviator stress, q, versus average total principal stress, p
x-axis label	Average principal stress (p), kPa
y-axis label	Deviator stress (q), kPa
Figure number	2c
Figure title	(c) Deviator stress, q, as a function of vertical local strain, for selected cycles, showing calculation of MR.
x-axis label	Avg. local axial strain (ez), %
y-axis label	Deviator stress (q), kPa


Figure number	3a
Figure title	"Cyclic stress paths applied in the HCA in terms of the applied stresses sz , sr = s? and t?,z  to investigate the effect of PSR  on MR. (redrawn from Gräbe (2002)). (a) SP1 without PSR 
"
x-axis label	Time, seconds
y-axis label	Stress, kPa
Figure number	3b	
Figure title		and (b) SP2 with PSR
x-axis label		Time, seconds
y-axis label		Stress, kPa


Figure number	4a&b
Figure title	"Measured resilient modulus from CTX tests for specimens at various water contents as a function of (a) of confining stress, p0, and (b) maximum deviator stress, qmax.
"
x-axis label (a)	Confining pressure (po), kPa
x-axis label (b)	Max deviator stress per cycle (qmax), kPa
y-axis label	Resilient modulus (MR), MPa


Figure number	5
Figure title	"Comparison of resilient modulus measured in the cyclic triaxial test and in the hollow cylinder apparatus under CTX conditions 
"
x-axis label	Gravimetric water content after testing (wf), % and Degree of saturation (%)
y-axis label	Resilient modulus (MR), MPa


Figure number	6
Figure title	"Suction modulus ratio (MRS) indicating the relative change in MR due to a change in water content (and associated suction) of the material. HCA and CTX MR normalised by MR, sat (HCA + 1v1). Value from Gräbe 2002 included for comparison only.
"
x-axis label	Gravimetric water content (wf), %
y-axis label	Modulus ratio: MRS (MR/MR,sat)


Figure number	7
Figure title	"Resilient modulus as a function of final water content, wf for all tests and sequences.
"
x-axis label	Final gravimetric water content (wf), %
y-axis label	Resilient modulus, MR, from local strain measurement, MPa


Figure number	8
Figure title	"Effect of PSR (SP2 in the HCA) on resilient modulus (e.g. MRPSR,c500 = MR,SP1,c500 / MR,SP2,c500) at different water contents (hence suctions).
"
x-axis label	Gravimetric water content after testing (wf), %
y-axis label	Modulus ratio: MRPSR (MR,SP1 /MR,SP2)


Figure number	9
Figure title	"Suction stress estimated from the SWRC for residual water contents of 2% and 3%, compared with values back calculated from cyclic triaxial MR results for Material B compacted at optimum water content (7%).
"
x-axis label	Gravimetric water content (w), %
y-axis label	Matric suction and suction stress, kPa

Date of data collection: 16/4/2012-23/6/2016

Related projects/Funders:
Railway Track for the 21st Century
W Powrie 2015 - EPSRC: Track to the Future

Licence: CC BY