Use of Dredge Materials as Road Embankment

Öz

In this study, it has been shown that marine dredged materials (DM), obtained from sea floor screening activities in Turkey, can be used as fill materials on highways. Index and engineering properties of the bottom dredged materials were studied. Grain size distribution and plasticity of the materials were determined. Standard Proctor tests were performed to determine the values of maximum dry unit weight and optimum water content to assess the usage of the material as a road fill. The results of the swelling potentials and CBR tests of the samples prepared by compaction in standard Proctor energy were determined. In the light of this data, dredged materials are assessed according to the criteria given in Technical Specifications of Republic of Turkey General Directorate of Highways to determine their suitability as a road fill. The shear strength parameters of the materials determined by strength tests were used in PLAXIS and GeoStudio softwares to determine whether the slope of the fill was safe when the dredged materials were used.

Anahtar Kelimeler

• Marine dredged materials
• Fill material on highways
• PLAXIS
• Geostudio

DENİZ DİBİ TARAMA MALZEMELERİNİN YOL DOLGUSU OLARAK KULLANIMI

Öz

Bu çalışmada, Türkiye’de gerçekleştirilen deniz tabanı tarama faaliyetlerinden elde edilen malzemelerin karayollarında dolgu malzemesi olarak kullanılabileceği gösterilmektedir. Ülkemizi
çevreleyen denizlerden seçilen 8 adet liman bölgesinden alınan deniz dibi tarama malzemelerinin (DTM) endeks ve mühendislik özellikleri bulunmuştur. Malzemelerin granülometri eğrileri ve Atterberg kıvam limitleri belirlenmiştir. Yol dolgu malzemesi olarak kullanımlarına yönelik olarak Standart Proktor deneyi ve aynı sıkıştırma enerjisi ile hazırlanan her numune üzerinde yaş CBR deneyi yapılmıştır. Bulunan parametreler ışığında, deniz dibi tarama malzemelerinin Karayolları Teknik Şartnamesinde verilen limit değerlere göre dolgu malzemesi olarak uygunlukları belirlenmiştir. Mukavemet deneyleri ile kayma mukavemet parametreleri de belirlenen sıkıştırılmış malzemelerin dolgu olarak inşa edilebilirlikleri Karayolu dolgularında genellikle uygulanan yüksekliğe bağlı şev eğimleri için PLAXIS ve Geostudio programı kullanılarak kontrol edilmiştir.

Anahtar Kelimeler

• Deniz dibi tarama malzemesi
• karayolu dolgusu
• PLAXİS
• Geostudio

Kaynakça

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