Papers

CITEEC is a leader in civil and building engineering research, focusing on innovative solutions for sustainable infrastructure and advanced materials.

Home > Papers

papers

Pioneering research for sustainable development

CITEEC carries out pioneering research in civil engineering, materials, sustainability and infrastructure. Thanks to multidisciplinary projects and international collaborations, scientific papers are being published that address key challenges facing the sector. This section presents the main papers and results produced by our research groups.

You can access a wide range of scientific publications, which can be filtered by subject, author, year and more. Use the filters provided to find relevant literature and learn more about each of our contributions to the advancement of knowledge.

Pioneering research for sustainable development

Show all

2020

Muñoz-Ibáñez, Andrea; Delgado-Martín, Jordi; Costas, Miguel; Rabuñal-Dopico, Juan R.; Alvarellos-Iglesias, Jose; Canal-Vila, Jacobo

Pure Mode I Fracture Toughness Determination in Rocks Using a Pseudo-Compact Tension (pCT) Test Approach Journal Article

In: Rock Mechanics and Rock Engineering, vol. 53, no. 7, pp. 3267-3285, 2020, ISSN: 07232632, (cited By 14).

Abstract | Links | BibTeX | Tags: Ambient conditions; Compact tension; Crack initiation and propagation; International society; Material requirements; Mode-i fracture toughness; Simple geometries; Stress concentrators, crack propagation; fracture toughness; rock mechanics; sample preparation; testing method, Cracks; High strength steel; Rock mechanics; Rocks; Tensile stress, Fracture toughness

@article{Muñoz-Ibáñez20203267,

title = {Pure Mode I Fracture Toughness Determination in Rocks Using a Pseudo-Compact Tension (pCT) Test Approach},

author = {Andrea Muñoz-Ibáñez and Jordi Delgado-Martín and Miguel Costas and Juan R. Rabuñal-Dopico and Jose Alvarellos-Iglesias and Jacobo Canal-Vila},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85083511678&doi=10.1007%2fs00603-020-02102-6&partnerID=40&md5=c56334e844a4145ad7c2718dbee6ea9f},

doi = {10.1007/s00603-020-02102-6},

issn = {07232632},

year  = {2020},

date = {2020-01-01},

urldate = {2020-01-01},

journal = {Rock Mechanics and Rock Engineering},

volume = {53},

number = {7},

pages = {3267-3285},

publisher = {Springer},

abstract = {Mode I fracture toughness (KIC) quantifies the ability of a material to withstand crack initiation and propagation due to tensile loads. The International Society for Rock Mechanics (ISRM) has proposed four suggested methods for determining KIC. However, these methods present some drawbacks such as insufficient post-peak control, complex sample preparation and considerable material requirements. Here we present an alternative approach, called the pseudo-compact tension (pCT) method, to measure KIC in rocks using disc-shaped specimens loaded in pure tension. The pCT specimen has favourable features such as a simple geometry, small sample volume and minimal machining requirement. The tensile load is transmitted to the specimen through two high-strength, high-stiffness steel jaws that fit into a U-shaped groove cut in the specimen. An additional thin straight notch is introduced to act as a stress concentrator. The crack propagates from the notch tip along the ligament plane, splitting the specimen into two halves. The effects of specimen size and notch length on KIC are determined by testing specimens 100, 50 and 38 mm in diameter with different notch length ratios (0.1 ≤ a/b ≤ 0.4). Tests were performed under ambient conditions and a slow loading rate (0.1 mm/min). Our results show that the pCT method is convenient for the assessment of KIC of both fragile and ductile rocks. The method offers good control even beyond the maximum load, making it possible to study the post-peak behaviour of the material. © 2020, Springer-Verlag GmbH Austria, part of Springer Nature.},

note = {cited By 14},

keywords = {Ambient conditions; Compact tension; Crack initiation and propagation; International society; Material requirements; Mode-i fracture toughness; Simple geometries; Stress concentrators, crack propagation; fracture toughness; rock mechanics; sample preparation; testing method, Cracks; High strength steel; Rock mechanics; Rocks; Tensile stress, Fracture toughness},

pubstate = {published},

tppubtype = {article}

}