Shear Strength Parameters of Sand Reinforced with Polypropylene Fiber

Year 2021, , 900 - 907, 31.08.2021

Hüseyin Suha Aksoy , Omer Muhammad Edan Edan , Nichirvan Taher

https://doi.org/10.35414/akufemubid.888613

Cited By: 1

Abstract

Improving the engineering properties of soils is one of the common necessity encountered in geotechnical engineering applications. This article investigates the effect of the addition of polypropylene fiber (PPF) on shear strength parameters of compacted sand. Different percentages of PPF (0.5%, 1.0% and 1.5%) by dry weight of the sand were added. Maximum dry density (MDD) and optimum moisture content (OMC) of sand alone and PPF-reinforced sand were measured by standard Proctor compaction test. Subsequently, shear box test was applied for sand and PPF-reinforced sand under three different normal stresses, samples were prepared under the condition of OMC and MDD. The results showed that when the percentage of PPF reaches 1%, the internal friction angle was at maximum value and cohesion is at the minimum value. With increasing percentage of PPF internal friction angle decreased and cohesion increased.

Keywords

Shear Box Test, Shear Strength Parameters, Sand, PPF, Standard Proctor Test

Polipropilen Elyaf ile Güçlendirilmiş Kumun Kayma Mukavemeti Parametreleri

Abstract

Zeminlerin mühendislik özelliklerinin iyileştirilmesi, geoteknik mühendisliği uygulamalarında sıklıkla karşılaşılan gerekliliklerden biridir. Bu çalışmada, polipropilen elyaf (PPF) ilavesinin sıkıştırılmış bir kumun kayma mukavemeti parametreleri üzerindeki etkisi araştırılmıştır. Kuru kuma ağırlıkça farklı yüzdelerde (%0.5,%1.0 ve %1.5) PPF ilave edilmiştir. Katkısız kumun ve PPF ile güçlendirilmiş kumun maksimum kuru birim hacim ağırlıkları (MDD) ve optimum su muhtevaları (OMC) standart Proktor deneyi ile belirlenmiştir. OMC ve MDD şartlarında hazırlanan katkısız kum ve PPF takviyeli kum numuneler üzerinde üç farklı normal gerilme altında kesme kutusu deneyi yapılmıştır. Elde edilen sonuçlar, PPF yüzdesi % 1 olduğunda, içsel sürtünme açısının maksimum ve kohezyonun ise minimum değere ulaştığını göstermiştir. Artan PPF yüzdesi ile içsel sürtünme açısı azalmış ve kohezyon artmıştır.

Keywords

Kesme Kutusu Deneyi, Kayma Mukavemeti Parametreleri, Kum, Polipropilen Elyaf, Standart Proktor Deneyi

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