Yıl 2019, Cilt 5, Sayı 1, Sayfalar 124 - 133 2019-01-31

Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability
Termal Şok Etkisinin Kaya Malzemelerinin Dayanım Kaybı Özellikleri üzerindeki Etkileri: Termal Yorulma üzerine Deneysel bir Çalışma

Eren Kömürlü [1]

20 68

Four different types of rock materials from Eastern Black Sea Region of Turkey were investigated to determine their change in porosity as well as the degree of cracking, fracturing, disintegration and strength loss under heating-cooling cycles with variations in temperatures up to 300 Co. Cooling time and thermal strains of the rock specimens were also determined in this study. Totally, sixty rock core samples were tested to evaluate their physico-mechanical and mechanical properties. Thermal cycling was found to lead for increase in the porosity of the rocks, making new cracks, particle disintegration for two types of tested rocks and considerable losses in uniaxial compressive strength values of all the rock materials tested in this study. The purpose of this study is to investigate immediate changes in temperature values rather than step by step heating up to a target temperature. For instance, rock samples were directly put in 250 oC stove from a -50 oC cabin in the last and fifth thermal cycling. After the heating process, specimens were cooled in water and air. This study aims to be a usable reference to establish a thermal change procedure and improve a new testing method for determination of thermal fatigue durability of rock materials.


Doğu Karadeniz bölgesinden dört farklı kaya malzemesinin, 300 oC’ye kadar değişen sıcaklık değişimlerine sahip termal döngüler altında porozite değerlerindeki değişim, çatlama, parçalanma ve dayanım kaybı özellikleri incelenmiştir. Numunelerin soğuma süreleri ve soğuma esnasındaki birim deformasyonları da bu çalışma kapsamında belirlenmiştir. Toplamda altmış adet karot numunesi test edilmiştir. Elde edilen sonuçlara göre, döngü sayısı arttıkça porozite değerlerinde artış, dayanım değerlerinde düşüş yaşanmakta olduğu, kaya malzemesi türüne bağlı olarak çatlamalar ve parça kopmaları şeklinde bozunmaların olabildiği görülmüştür. Çalışmadaki termal döngülerde ani sıcaklık değişimleri incelenmiştir. Örneğin, beşinci ve son döngüde numuneler 250 oC etüvden alınarak doğrudan -50 oC sıcaklıktaki soğutma kabinine alınmıştır. Isıtma işleminden sonra numuneler suda ve havada farklı ortamlarda soğutulmuşlardır. Bu çalışma, kaya malzemelerinin termal yorulma karşısındaki dirençlerinin değerlendirilmesi üzerine ısıtma-soğutma işlemleri prosedürün belirlenmesi ve geliştirilecek yeni bir metoda yönelik çalışmalara kullanışlı bir referans oluşturmayı amaçlamıştır.

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Birincil Dil en
Konular Mühendislik
Yayımlanma Tarihi 2019
Dergi Bölümü Araştırma Makalesi
Yazarlar

Orcid: 0000-0002-2123-7678
Yazar: Eren Kömürlü (Sorumlu Yazar)
Kurum: GİRESUN ÜNİVERSİTESİ
Ülke: Turkey


Bibtex @araştırma makalesi { dacd439006, journal = {Doğal Afetler ve Çevre Dergisi}, issn = {}, eissn = {2528-9640}, address = {Artvin Çoruh Üniversitesi}, year = {2019}, volume = {5}, pages = {124 - 133}, doi = {10.21324/dacd.439006}, title = {Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability}, key = {cite}, author = {Kömürlü, Eren} }
APA Kömürlü, E . (2019). Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability. Doğal Afetler ve Çevre Dergisi, 5 (1), 124-133. DOI: 10.21324/dacd.439006
MLA Kömürlü, E . "Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability". Doğal Afetler ve Çevre Dergisi 5 (2019): 124-133 <http://dacd.artvin.edu.tr/issue/38883/439006>
Chicago Kömürlü, E . "Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability". Doğal Afetler ve Çevre Dergisi 5 (2019): 124-133
RIS TY - JOUR T1 - Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability AU - Eren Kömürlü Y1 - 2019 PY - 2019 N1 - doi: 10.21324/dacd.439006 DO - 10.21324/dacd.439006 T2 - Doğal Afetler ve Çevre Dergisi JF - Journal JO - JOR SP - 124 EP - 133 VL - 5 IS - 1 SN - -2528-9640 M3 - doi: 10.21324/dacd.439006 UR - http://dx.doi.org/10.21324/dacd.439006 Y2 - 2018 ER -
EndNote %0 Doğal Afetler ve Çevre Dergisi Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability %A Eren Kömürlü %T Thermal Shock Effect on Strength Loss Properties of Rock Materials: An Experimental Study on Thermal Fatigue Durability %D 2019 %J Doğal Afetler ve Çevre Dergisi %P -2528-9640 %V 5 %N 1 %R doi: 10.21324/dacd.439006 %U 10.21324/dacd.439006
ISNAD Kömürlü, Eren . "Termal Şok Etkisinin Kaya Malzemelerinin Dayanım Kaybı Özellikleri üzerindeki Etkileri: Termal Yorulma üzerine Deneysel bir Çalışma". Doğal Afetler ve Çevre Dergisi 5 / 1 (Ocak 2019): 124-133. http://dx.doi.org/10.21324/dacd.439006