The Mechanical Behaviors of Polymer Treated Clay
Selim Altun1, Perviz Ahmetzade2, İrem Bozyiğit3*, Mohammad Mahmoudi4, Cahit Yerdelen5
1Civil Engineering Dept., Ege University, İzmir, Turkey
2Civil Engineering Dept., Ege University , İzmir, Turkey
3Ege University, İzmir, Turkey
4Ege University, İzmir, Turkey
5Civil Engineering Dept., Ege University , İzmir, Turkey
* Corresponding author: irem.kalipcilar@ege.edu.tr
Presented at the Ist International Symposium on Innovative Approaches in Scientific Studies (ISAS 2018), Kemer-Antalya, Turkey, Apr 11, 2018
SETSCI Conference Proceedings, 2018, 2, Page (s): 244-244 , https://doi.org/
Published Date: 23 June 2018 |
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Abstract
Nowadays, as the population increase, various construction projects are made on soils which engineering properties are not suitable. Many stabilization methods are used in order to prevent deformations and loss of bearing capacity on such soils. However, most of the stabilization methods are harmful for the environment and are uneconomical. Therefore, with the new developments in this area, many studies are being carried out on environmentally friendly additives. It should also be noted that the seasonal freeze-thaw cycles in the cold regions reduce the effectiveness of soil remediation methods. Given the fact that almost 50% of the land area on the earth is exposed to the freezing and thawing cycles, it is very important to know the behavior of the soil improvement additives under freezing and thawing. In this study, the variation of the mechanical properties of polymer treated soils under curing time and freeze - thaw effect were investigated. For this purpose, unconfined compression and freeze - thaw tests have been carried out. Anionic polymers were used to improve the mechanical properties of kaolin clay. The specimens were prepared with 0.5, 1.0, 1.5 and 2.0% polymer content by using standard proctor energy subjected to 5 and 10 cycles of freeze-thaw effect to obtain the freeze-thaw effect. After 7, 14 and 28 day curing periods, changes in the unconfined compression strength of the specimens were obtained. According to the obtained results, unconfined compressive strength of treated soil is increased by increment of polymer content and curing time. It has been observed that the strength of specimens decreased significantly whn exposed to freeze – thaw and showed more brittle behaviour.
Keywords - Unconfined compressive strength, freezing- thawing, anionic polymer
References