Effect of scratch length on the cerchar abrasivity index

Cerchar Abrasivity Index test (CAI) is widely used for determining the abrasiveness of rocks. This test provides an index value that can be used as a gauge for the abrasiveness of rocks in order to estimation of bit life and wear in various mining and tunneling applications. In this study, changes in CAI with the changes in scratch length were investigated by the use of West apparatus to determine the effects of length on CAI. The tests were carried out on 6 different rock types (3 types of sandstone, limestone, granite and quartzite) where on rough and saw cut surfaces with a scratch length between 2 mm to 20 mm with an increment of 2 mm. It has been found that about 60% of the final Cerchar index (at a 20 mm sliding) was observed at the first 2 mm scratch and continued at a constant rate up to 16–18 mm, then rests around 20 mm sliding distance. This initial high tip wears may partly depend on the deformation and shear failure at the tip of pins. It has been also observed that 87% of the final Cerchar index was reached at 10 mm sliding distance while 97% of the final Cerchar index at the 15 mm sliding distance. Since initial wear at the 2 mm sliding distance is not dependent on the amount of abrasive material in the host rock. Approximately 35% of the Cerchar index can be attributed to the abrasion effect which corresponds to the final 8 mm of sliding distance. However if the sliding distance is increased to 15 mm then 45% of the Cerchar index can be attributed to the rock abrasion effects. This is very important for the tool life estimation in tunneling applications. © 2013 Taylor & Francis Group, London.

Yazar Yaralı O.
Aydın H.
Duru H.
Özarslan A.
Yayın Türü Conference Object
Tek Biçim Adres https://hdl.handle.net/20.500.12628/5373
Koleksiyonlar Araştırma Çıktıları | WoS | Scopus | TR-Dizin | PubMed | SOBİAD
Scopus İndeksli Yayınlar Koleksiyonu
WoS İndeksli Yayınlar Koleksiyonu
Dergi Adı ISRM International Symposium - EUROCK 2013
Sayfalar 369 - 375
Yayın Yılı 2013
Eser Adı
[dc.title]
Effect of scratch length on the cerchar abrasivity index
Yayıncı
[dc.publisher]
International Society for Rock Mechanics
Yayın Türü
[dc.type]
conferenceObject
Açıklama
[dc.description]
ISRM International Symposium - EUROCK 2013 -- 23 October 2013 through 26 October 2013 -- -- 138846
Özet
[dc.description.abstract]
Cerchar Abrasivity Index test (CAI) is widely used for determining the abrasiveness of rocks. This test provides an index value that can be used as a gauge for the abrasiveness of rocks in order to estimation of bit life and wear in various mining and tunneling applications. In this study, changes in CAI with the changes in scratch length were investigated by the use of West apparatus to determine the effects of length on CAI. The tests were carried out on 6 different rock types (3 types of sandstone, limestone, granite and quartzite) where on rough and saw cut surfaces with a scratch length between 2 mm to 20 mm with an increment of 2 mm. It has been found that about 60% of the final Cerchar index (at a 20 mm sliding) was observed at the first 2 mm scratch and continued at a constant rate up to 16–18 mm, then rests around 20 mm sliding distance. This initial high tip wears may partly depend on the deformation and shear failure at the tip of pins. It has been also observed that 87% of the final Cerchar index was reached at 10 mm sliding distance while 97% of the final Cerchar index at the 15 mm sliding distance. Since initial wear at the 2 mm sliding distance is not dependent on the amount of abrasive material in the host rock. Approximately 35% of the Cerchar index can be attributed to the abrasion effect which corresponds to the final 8 mm of sliding distance. However if the sliding distance is increased to 15 mm then 45% of the Cerchar index can be attributed to the rock abrasion effects. This is very important for the tool life estimation in tunneling applications. © 2013 Taylor & Francis Group, London.
Kayıt Giriş Tarihi
[dc.date.accessioned]
2019-12-23
Açık Erişim Tarihi
[dc.date.available]
2019-12-23
Yayın Yılı
[dc.date.issued]
2013
Tek Biçim Adres
[dc.identifier.uri]
https://hdl.handle.net/20.500.12628/5373
Yayın Dili
[dc.language.iso]
eng
Yazar
[dc.contributor.author]
Yaralı O.
Yazar
[dc.contributor.author]
Aydın H.
Yazar
[dc.contributor.author]
Duru H.
Yazar
[dc.contributor.author]
Özarslan A.
Haklar
[dc.rights]
info:eu-repo/semantics/closedAccess
Sponsor YAYINCI
[dc.description.sponsorship]
110M579
Sponsor YAYINCI
[dc.description.sponsorship]
This study was supported by TUBITAK under the project number of 110M579. The authors also gratefully acknowledge Bülent Ecevit University.
Yazar Departmanı
[dc.contributor.department]
Zonguldak Bülent Ecevit Üniversitesi
İlk Sayfa Sayısı
[dc.identifier.startpage]
369
Son Sayfa Sayısı
[dc.identifier.endpage]
375
Dergi Adı
[dc.relation.journal]
ISRM International Symposium - EUROCK 2013
ISBN
[dc.identifier.isbn]
9781138000803
Görüntülenme Sayısı ( Şehir )
Görüntülenme Sayısı ( Ülke )
Görüntülenme Sayısı ( Zaman Dağılımı )
Görüntülenme
17
09.12.2022 tarihinden bu yana
İndirme
1
09.12.2022 tarihinden bu yana
Son Erişim Tarihi
06 Şubat 2024 22:05
Google Kontrol
Tıklayınız
Cerchar distance sliding scratch length attributed effects observed initial abrasion abrasiveness changes estimation applications tunneling Taylor failure deformation reached depend Francis partly London effect increased However corresponds important Approximately material abrasive amount dependent provides around
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve çerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.

creativecommons
Bu site altında yer alan tüm kaynaklar Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.
Platforms