TY  - JOUR
TI  - Consolidated Undrained Monotonic Shearing Response
of Hydrophobic Kızılırmak Sand
AB  - Geotechnical properties of hydrophilic (wettable) sands have been widely discussed in the
literature. However, sands may gain hydrophobic (non-wettable) properties after being
exposed to a hydrophobic agent in the nature. The number of available studies regarding the
response of hydrophobic sands is very limited, and mostly focus on their environmental and
hydrological aspects. To close this gap, a controlled laboratory testing program, consisting
of 18 monotonic strain-controlled consolidated undrained triaxial shear tests, was designed.
Tests were performed on fully saturated hydrophilic and hydrophobic re-constituted
Kızılırmak sand samples of different relative densities with pore water measurements.
Hydrophobic samples were prepared by using 1 and 2 % WD-40 lubricant by mass. The
effect of hydrophobic agent was assessed by comparing the stress – excess pore water
pressure - strain responses of hydrophobic sand samples with those of conventional
(hydrophilic) sand samples. Test results revealed that addition of hydrophobic agent
increases the dilatancy of sands at low confining stresses (~100kPa) by decreasing the excess
pore water pressure generation. At higher confining stresses (~400kPa) this effect is less
pronounced. Moreover, the addition of hydrophobic agent up to 2% by mass does not
systematically and significantly change the effective angle of shearing resistance of sand
samples, independent of their initial relative density and confining stress levels.
AU  - CETIN, KEMAL ONDER
AU  - Tatar, Hüseyin Melih
DO  - 10.18400/tekderg.543306
PY  - 2021
JO  - Teknik Dergi
VL  - 32
IS  - 2
SN  - 1300-3453
SP  - 10675
EP  - 10694
DB  - TRDizin
UR  - http://search/yayin/detay/535002
ER  -