EFFECT OF LIME ON UNCONFINED COMPRESSIVE STRENGTH OF A LOW PLASTICITY CLAYEY SOIL
| Autor: | KARASAHİN, Mustafa, KESKİN, Erdinç, ŞAHİNOĞLU, İlker |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Volume: 3, Issue: 2 32-40 Eurasian Journal of Civil Engineering and Architecture |
| ISSN: | 2602-3865 |
| Popis: | Theperformance of the superstructure in the transportation structures (railway,highway etc.) is directly affected by the characteristics of subgrade. However,it is not always possible to find the desired quality subgrade soil in theareas where both highway and railway routes. In such cases, it is an option toimprove the problematic soils in place by using additives (lime, cement etc.).The aim of this study is to investigate the effect of lime on the unconfinedcompressive strength (UCS) of a low plasticity clayey soil under differentcuring time (0, 1, 7 and 28 days) and different curing conditions (in adesiccator and soaked). Firstly, geotechnical tests (classification andcompaction) were conducted to determine properties of soil. UCS test samples atfive different lime contents (2%, 3%, 4%, 5% and 6% by weight) were preparedand cured in desiccator. Then UCS test was conducted immediately at the end ofthe curing time. On the other hand, the optimum lime content by weight wasdetermined as 4 % by using the pH method. After curing time in the desiccator,the samples prepared with optimum lime content were soaked in water for 4 daysand then UCS test was carried out. As a result, with the addition of lime,maximum dry density values decreased, optimum water content values increased.UCS significantly increased with both lime content and curing time. For 28days, soaked UCS of the samples prepared with 4% optimum lime content decreasedby approximately 50% according to unsoaked condition |
| Databáze: | OpenAIRE |
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