Denizli Travertenlerinde P ve S Dalga Hızları ile Bazı Fiziksel ve Tek Eksenli Sıkışma Dayanımı Özellikleri Arasındaki İlişkilerin Araştırılması

Year 2019, Volume: 22 Issue: 2, 341 - 349, 01.06.2019

Sefer Beran Çelik , İbrahim Çobanoğlu

https://doi.org/10.2339/politeknik.444370

Cited By: 3

Abstract

Denizli havzası traverten
çökeliminin yaygın olarak görüldüğü dünyaca ünlü havzalardan birisidir.
Traverten, çökelim koşullarına bağlı olarak gözeneklilik, tabakalanma, sertlik
gibi değişken yapısal özellikler sunmaktadır. Bu durum travertenin çok geniş
bir aralıkta değişen fiziksel ve mekanik özelliklere sahip olmasına neden
olmaktadır. Bu çalışmada Denizli traverteninin temel fiziksel özellikler ve TSD
değerlerinin V_p ve V_s değerlerinden tahmini
amaçlanmıştır. Doğal yapı taşı olarak Denizli travertenleri, Dünya’nın çeşitli
bölgelerine ihraç edilmekte ve gerek yurt içi gerekse de yurtdışında önemli bir
pazara sahiptir. Bu çalışmada, Kaklık bölgesinden temin edilen traverten
bloklarından alınmış 56 karot örneğinin kuru ve doygun birim hacim ağırlık (g_k,
g_d)
görünür porozite (n_a) ve tek eksenli sıkışma dayanımı (TSD)
değerleri belirlenmiş ve bu özelliklerin boyuna (V_p) ve enine (V_s)
ultrasonik dalga hızları ile karşılaştırılması yapılmıştır. Denizli
travertenlerinde g_k,
g_d
değerlerinin artışıyla ölçülen V_p ve V_s dalga hızı
değerlerinin de doğrusal olarak arttığı, bunun tersine örneklerin n_a
değerlerinin artışına bağlı olarak da V_p ve V_s dalga
hızarında doğrusal bir düşüm gözlenmiştir. TSD değerlerinin g_k
değerlerinin artışıyla üstel olarak arttığı, n_a değerlerinin
artışıyla ise üstel olarak azaldığı görülmüştür. V_p ve V_s
dalga hızlarının artışıyla TSD değerlerinin üstel olarak arttığı ortaya
konmuştur. Denizli travertenleri için elastik parametrelerden olan kayma
modülü, poisson oranı ve elastisite modülü değerleri V_s ve V_p
değerlerinden ampirik olarak hesaplanmış ve sunulmuştur. 

Keywords

Denizli traverteni, boyuna ses dalgası hızı, enine ses dalgası hızı, tek eksenli sıkışma dayanımı, elastik özellikler

Investigation of Relations between P and S Wave Velocities and Some Physical and Uniaxial Compressive Strength Properties in Denizli Travertines

Abstract

The Denizli basin is one of the most familiar basins
in the world where large travertine deposits are existed. The travertine
exhibits various structural properties such as porosity, layer, hardness
depending on sedimentation conditions. This causes the travertine to have
physical and mechanical properties varying in wide range. As a natural building
stone, Denizli travertines are exported to various regions of the world and
became an important market both in Turkey and abroad. In this study, the
apparent porosity (n_a), dry and saturated unit volume weight (g_k, g_d) and
uniaxial compressive strength (UCS) values of 56 cores taken from the
travertine blocks obtained from the Kaklık region were determined and these
results were compared to longitudinal compressional wave velocity (V_p)
and shear wave velocity (V_s) values. Measured V_p and V_s
wave velocity values were increased with increasing g_k, g_d values whereas V_p and V_s wave velocities were
linearly decreased with increasing n_a values. UCS values increased
exponentially with increasing g_k values and decreased exponentially with the increase of n_a
values. V_p and V_s wave velocities exponentially increased
with increasing UCS values. Shear modulus, poisson ratio and modulus of
elasticity values were also calculated empirically by measured V_p
and V_s values.

Keywords

Denizli travertine, longitudinal wave velocity, shear wave velocity, uniaxial compressive strength, elastic properties

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