Advances in Soil Structure Diagnoses

Yıl 2018, Cilt: 4 Sayı: 1, 38 - 45, 06.08.2018

Gülay Karahan Ahmet Sami Erol Sabit Erşahin

Öz

It is difficult to understand soil microstructure due to the complexity of the related soil processes. To better understand soils, morphological features should be investigated in greater details with the use of advanced technology. New developments and of their combination provide contribution for better evaluation of soil morphological properties and relationships between soil structure and water movement. In multiphase porous materials, qualitative and quantitative information can be collected non-invasively by these methods. With the computer-assisted and nondestructive advanced technology such as computer microtomography (μCT), models which could give more reliable results have been used in the last years. In this regard, microCT isused to display 3D morphological properties of undisturbed soil samples in the greatest detail. 3D-printed structures of undisturbed soils are obtained with a resolution of 80 μm with this tecnique. Experiments showed that more successful results were obtained compared to 2D and/or direct observations and provide high quality images. The results indicated that new technologies would contribute to understanding the micro-heterogeneity of soils and its relation to soil-water dynamics. In this way, using a 3D for imaging of soil structure would be a good tool to develop soil hydraulic models. In this paper, we discussed use of advanced technology in soil structure diagnosis. 

Anahtar Kelimeler

Soil morphology, soil water dynamics, 3D-printed soils, X-ray computed microtomography

Toprak Strüktürü Analizinde Gelişmeler

Öz

Toprak mikroyapısının anlaşılması ilgili toprak süreçlerinin karmaşıklığı nedeniyle zordur. Toprakları daha iyi anlamakiçin, morfolojik özellikler ileri teknolojilerin kullanılması ile daha detaylı araştırılmalıdır. Bu teknolojilerin yenigelişmeleri ve kombinasyonları, toprak morfolojik özelliklerinin ve toprak yapısı ile su taşınımı arasındaki ilişkilerindaha iyi değerlendirilmesi için katkı sağlar. Çok fazlı gözenekli materyallerde, nicel ve nitel bilgiler bu metotlar ile bozulmadan toplanabilir. Son yıllarda, bilgisayar mikrotomografisi (μCT) gibi bilgisayar destekli ve zararsız gelişmiş teknoloji ile daha güvenilir sonuçlar verebilecek modeller kullanılmıştır. Bu bağlamda, mikroCT bozulmamış toprak numunelerinin 3D’li morfolojik özelliklerini en ayrıntılı şekilde görüntülemek için kullanılmıştır. Bozulmamış toprakların 3D baskılı yapıları, bu teknikle 80 μm'lik bir çözünürlükle elde edilir. Deneyler, 2D ve/veya doğrudan gözlemlere kıyasla daha başarılı sonuçların elde edildiğini ve yüksek kaliteli görüntüler verdiğini göstermiştir. Sonuçlar, yeni teknolojilerin toprakların mikro-heterojenliğini ve toprak-su dinamiği ile olan ilişkisinin anlaşılmasına
katkıda bulunacağını belirtmektedir. Bu şekilde, toprak yapısının görüntülenmesi için bir 3D kullanmak, toprak hidrolik modellerini geliştirmek için iyi bir araç olacaktır. Bu makalede, toprak yapısının teşhisinde ileri teknolojilerin kullanılması tartışılmıştır.

Anahtar Kelimeler

Toprak morfolojisi, toprak-su dinamikleri, 3D-baskılı topraklar, X-ray bilgisayarlı mikrotomografi

Kaynakça

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