TY  - JOUR
T1  - Natural Nanoparticles Effects on Geotechnical Properties of Clayey Soil
AU - Majdi, Moharram AU - Uromiei, Ali AU - Nikudel, Mohamadreza 
JO  - Journal of Engineering and Applied Sciences
VL  - 11
IS  - 3
SP  - 361
EP  - 368
PY  - 2016
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2016.361.368
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2016.361.368
KW  - Nanoparticles
KW  -soil stabilization
KW  -ball milling
KW  -geotechnic
KW  -XRF
AB  - In this study, the effect of nanosilica and nanokaolinite particles on geotechnical properties of clayey
soils is investigated. The mechanical method of Planetary Ball Mill was used for nanoparticles production. In
this process, initial silicate and kaolinite powders was milled in Planetary Ball Mill for 10 h with speed
of 500 Rpm. This product was in nanometer scale and FESEM images prove it. In next stage, nanoparticles were
mixed with Clayey Soil (CL) in different weight ratio of dry soil then geotechnical properties of treated soils was
determined by compaction, direct shear, cassagrande and unconfined compression tests and optimum
percentage of added nanosilica and nanokaolinite obtained. As a result we understood LL and PL of soil
increased while percentage of added nanoparticles increased but increasing of PL is more than LL thus, PI is
decreased that is proper in geotechnical engineering for construction. Also, compaction tests results was
shown the density of clayey soil was increased by adding of nanoparticles with specific amount and higher
than that the density would be decreased. Direct shear tests has been proved, cohesion of clayey soils
increased by adding of specific amount of nanoparticles to optimum and there is no more change by increasing
the nanoparticles. Results of unconfined compression tests indicated that compressive strength of amended
soils could be raised up to 3 times more than unamend soil by adding nanoparticles. Results of XRD and XRF
tests showed that chemical attribute of nanoparticles produced by Planetary Ball Mill is same as initial material.
ER  -