Influence of Tack Speed on The Rheological Properties of Mortar in Fresh State
In the present work, the squeeze flow techniques were used to investigate the influence of tack speed to the rheological properties of mortar in fresh sate, including yield stress and extensional viscosity.Tested samples were prepared under similar conditions of room temperature and atmospheric pressure. Compositions of mortars were tested at two different squeezing rates (20 and 200 mm/s) 15 min after mixing. Results indicate that mortar’s yield stress increases with the increasing of the pulling speed. This increase is evident at low tensile speeds. At high speed of tack, this increase is not obvious, especially in case of high squeeze speed of 200 mm/s. It can be concluded that the optima speed for removing the mortar and the upper surface is lower than 20 mm/s. The extensional viscosity of fresh mortars significantly decrease as the tack speed increases. Elongational viscosity values decreased as a result of gap increasing. The increase of the gap during tack experiment stimulates different units (grains getting far apart to each other) causing the observed decrease of the mortars' elongational viscosity
P. F. G. Banfill, “Use of the ViscoCorder to study the rheology of fresh mortar,” Magazine of Concrete Research, vol. 42, no. 153, pp. 213–221, Dec. 1990.
R. G. Pileggi, “Novel tools for the study and development of refractory castables,” Ph.D. dissertation, Federal University of São Carlos, São Carlos, Brazil, 2001.
V. T. Phan, “Influence of re-dispersible powder on the properties of mortars,” Journal of Materials and Engineering Structures, vol. 1, no. 1, pp. 2–10, Jan. 2014.
V. T. Phan and D. D. Nguyen, “Influence of Squeezing Rate on Yield Stress and Viscosity of Fresh Mortar,” Engineering, Technology & Applied Science Research, vol. 10, no. 4, pp. 5921–5924, Aug. 2020.
J. F. Steffe, Rheological Methods in Food Process Engineering. Freeman Press, 1996.
G. H. Meeten, “Yield stress of structured fluids measured by squeeze flow,” Rheologica Acta, vol. 39, no. 4, pp. 399–408, Aug. 2000.
N. Özkan, C. Oysu, B. J. Briscoe, and I. Aydin, “Rheological analysis of ceramic pastes,” Journal of the European Ceramic Society, vol. 19, no. 16, pp. 2883–2891, Dec. 1999.
J. Engmann, C. Servais, and A. S. Burbidge, “Squeeze flow theory and applications to rheometry: A review,” Journal of Non-Newtonian Fluid Mechanics, vol. 132, no. 1, pp. 1–27, Dec. 2005.
O. Campanella and M. Peleg, “Squeezing Flow Viscosimetry of Peanut Butter,” Journal of Food Science, vol. 52, no. 1, pp. 180–184, Aug. 2006.
B. H. Min, L. Erwin, and H. M. Jennings, “Rheological behaviour of fresh cement paste as measured by squeeze flow,” Journal of Materials Science, vol. 29, no. 5, pp. 1374–1381, Mar. 1994.
B. Belahcene, A. Mansri, and A. Benmoussat, “Investigation on the Rheological Behavior of Multigrade Oil under the Effect of Organic and Inorganic Impurities,” Engineering, Technology & Applied Science Research, vol. 4, no. 6, pp. 711–713, Dec. 2014.
D. N. Smyrnaios and J. A. Tsamopoulos, “Squeeze flow of Bingham plastics,” Journal of Non-Newtonian Fluid Mechanics, vol. 100, no. 1, pp. 165–189, Sep. 2001.
F. A. Cardoso, A. K. Agopyan, C. Carbone, R. G. Pileggi, and V. M. John, “Squeeze flow as a tool for developing optimized gypsum plasters,” Construction and Building Materials, vol. 23, no. 3, pp. 1349–1353, Mar. 2009.
V. T. Phan, “Evaluation of Some Rheological Properties of Xanthan Gum”, Engineering, Technology & Applied Science Research, vol. 10, no. 5, pp. 6172-6175, Oct. 2020.
S. Lee, M. Chung, H. M. Park, K.-I. Song, and I. Chang, “Xanthan Gum Biopolymer as Soil-Stabilization Binder for Road Construction Using Local Soil in Sri Lanka,” Journal of Materials in Civil Engineering, vol. 31, no. 11, Nov. 2019, Art. No. 06019012.
MetricsAbstract Views: 73
PDF Downloads: 46
Copyright (c) 2020 Author
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain the copyright and grant the journal the right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) after its publication in ETASR with an acknowledgement of its initial publication in this journal.