Istrazivanja i projektovanja za privreduJournal of Applied Engineering Science


DOI: 10.5937/jaes14-10477
This is an open access article distributed under the CC BY-NC-ND 4.0 terms and conditions. 
Creative Commons License

Volume 14 article 382 pages: 290-295

Chusak Kererat
Rajamangala University of Technology Rattanakosin Wangklaikangwon Campus, Faculty of Engineering, Thailand

The objective of this research was to study the effect of the 3 apex angles of cone and the water levels on the bearing capacity of sandy soil layer by using kunzelstab test. The silty sandy soil (SM) was used as the representative of sandy soil. According to the results, the cone angle increase, a number of blows increase and the adjusted factors of the blows from the apex angles of 60º and 180 º to be that of the apex angle of 90º (control) were 1.118 and 0.878, respectively. The correlation of the blows against the internal friction angles of SM soil can be used for calculating the soil bearing capacity under the condition that the depth was deeper than 1 m below the ground surface. The soil bearing capacity of SM soil below the water level decreases 70-75 percent compering to dry soil. The bearing capacity of SM soil above the water level up to 0.6 m decreases 25-30 percent compering to that of the dry soil at the same depth. Therefore, the calculation of the soil bearing capacity in the silty sandy soil layer should be considered the effect of the water level.

View article

I would like to thank Rajamangala University of Technology Rattanakosin, Thailand for providing funding for this research. Also, we thank Mr. Buncha Oncham, Mr.Somphop Makkayai and Mr.Suttisak Intarasanit for operating  kunzelstab test.

Kererat, C. (2012) “Manual of soil mechanics laboratory” Rajamangala University of Technology Rattanakosin, Prachuap Khirikhan.

Khuwijitjaru, S. (1999) “Soil Laboratory Testing”, Library Nine Publishing, Bangkok.

Khuwijitjaru, S. (2001) “Soil Investigation: Boring, Sampling and Field Test” Kasetsart University Press, Bangkok.

Krasaeteep, A. and Thongchart, S. (2012) “A Comparison of Cone Tip in Kunzelstab Penetration Test (KPT)” the 17th National Convention on Civil Engineering, Udonthani.

Meyerhof, G.G. (1956) “Penetration Tests and Bearing Capacity of Cohesionless Soils” Journal of the Soil Mechanics and Foundations Division, 82 (1), 1-19.

Sakmanee, A. and Chantawarangul, K. (2003) “Soil exploration by dynamic light penetrometer” the 41th Kasetsart University Annual Conference, Bangkok, pp. 490-497.

Sakmanee, A. and Chantawarangul, K. (2006) “Dynamic penetrometer resistance in sand” the 11th National Convention on Civil Engineering, Phuket.