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Journals / Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi / 2025 / Cilt: 18

Effect of travertine fabric on anisotropy in physico-mechanical properties

Traverten dokusunun fiziko-mekanik özelliklerdeki anizotropi üzerine etkisi

Sefer Beran Çelik(PAMUKKALE ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ, JEOLOJİ MÜHENDİSLİĞİ BÖLÜMÜ)0000-0003-1850-5229
Kazim Gireson(PAMUKKALE UNIVERSITY)0000-0002-0843-0529
Pages
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Publication Date
2026-10-13
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results demonstrated pronounced directional dependence, with anisotropy indices ranging from 1.05 for VP to 2.20 for UCS, indicating that strength was considerably more sensitive to pore-fabric orientation.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Complex textural characteristics and pore orientation significantly influence the physical and mechanical properties of travertines.
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Key Findings & Data:The results demonstrated pronounced directional dependence, with anisotropy indices ranging from 1.05 for VP to 2.20 for UCS, indicating that strength was considerably more sensitive to pore-fabric orientation.
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Conclusion & Impact:Consequently, the distinctive fabric and pore orientation of travertine should be considered fundamental factors governing its engineering performance.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Traverten · Anizotropi · Gözenek dokusu

Abstract

Complex textural characteristics and pore orientation significantly influence the physical and mechanical properties of travertines. Although anisotropic behavior in travertines commonly appears to resemble bedding observed in sedimentary rocks, the influence of oriented pores in travertines lacking distinct bedding has received limited attention. In this study, the anisotropic characteristics of travertine were investigated through Leeb hardness (HL), Schmidt hardness (HS), P-wave velocity (VP), S-wave velocity (VS), uniaxial compressive strength (UCS), dynamic elastic modulus (Ed), and point load strength index (PLI) tests performed on specimens prepared both parallel and perpendicular to the predominant pore orientation. The results revealed that the degree of anisotropy varied considerably depending on the physico-mechanical parameter considered. The greatest directional variations were observed in strength parameters, whereas lower degrees of variation were obtained for hardness and elastic wave velocities. This indicates that the control exerted by the pore-textural system, characterized by preferentially oriented pores, on failure mechanisms is substantially greater than its influence on elastic wave propagation and surface hardness. The results demonstrated pronounced directional dependence, with anisotropy indices ranging from 1.05 for VP to 2.20 for UCS, indicating that strength was considerably more sensitive to pore-fabric orientation. Consequently, the distinctive fabric and pore orientation of travertine should be considered fundamental factors governing its engineering performance.

Özet

Karmaşık dokusal özellikler ve gözenek yönelimi, travertenlerin fiziksel ve mekanik özelliklerini belirgin şekilde etkiler. Travertenlerdeki anizotropik davranış çoğunlukla sedimanter kayaçlarda görülen tabakalanma gibi görünse de belirgin tabakalanma sunmayan travertenlerde doğrultulu gözeneklerin bu etkisi yeterince araştırılmamıştır. Bu çalışmada, baskın gözenek doğrultusuna paralel ve dik olarak hazırlanan traverten örnekleri üzerinde Leeb sertliği (HL), Schmidt sertliği (HS), P-dalga hızı (VP), S-dalga hızı (VS), tek eksenli basınç dayanımı (UCS), elastisite modülü (Ed) ve nokta yük dayanım indeksi (PLI) deneyleri gerçekleştirilerek taşın anizotropik özellikleri araştırılmıştır. Elde edilen bulgular, anizotropi derecesinin incelenen fiziko-mekanik parametreye bağlı olarak büyük değişkenlik gösterdiğini ortaya koymuştur. En yüksek yöne bağlı değişim dayanım parametrelerinde gözlenirken, sertlik ve elastik dalga hızlarında daha düşük değişim oranları elde edilmiştir. Bu durum, belli doğrultularda dizilen gözenekli doku sisteminin yenilme mekanizmaları üzerindeki kontrolünün, elastik dalga yayılımı ve yüzey sertliğine kıyasla çok daha etkili olduğunu ortaya koymuştur. Sonuçlar, belirgin bir yönsel bağımlılık ortaya koymuş, anizotropi indislerinin VP için 1.05 ile UCS için 2.20 arasında değiştiği ve dayanımın gözenek dokusunun yönelimine önemli ölçüde daha duyarlı olduğu belirlenmiştir. Sonuç olarak, travertenlerin kendine has dokusu ve gözenek yöneliminin mühendislik performansında temel parametreler olarak dikkate alınması gerekmektedir.

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Cite This Article

Çelik, S. B., Gireson, K., *, S. B. Ç. (2026). Effect of travertine fabric on anisotropy in physico-mechanical properties. Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 18. https://doi.org/10.28948/ngumuh.2022775

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