The Influence of the Chosen Type of Form Lubricator in the Form for Cement Paste with Fly Ash on the Fracture Process Zone

Abstract:

This paper is focused on the cracks growth in mode II of specimens made of cement paste with fly ash. Three prescriptions were made for testing in mode II, during the making air bubbles arose at the bottom of the specimen that were lubricated with oil. These little caverns can have an influence on the growth of the cracks in the fracture process zone. On the other side, specimens that were lubricated with a wax, no caverns were observed. There are complex mechanisms of crack growth in the fracture process zone, cavern or inertial elements have a fundamental effect on the success of the real tests in mode II. Specimens lubricated with wax have a 50 % higher successful running of the test than those, whose forms were lubricated with the oil.

• Periodical: Key Engineering Materials (Volume 731)
• Pages: 92-97
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.731.92
• Online since: March 2017
• Authors: Barbora Mužíková*, Pavel Padevět
• Keywords: Cement Paste, Fly Ash, Fracture Process Zone, Lubricator, Mode II

References

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