Use of Spongilites as Pozzolanic Additives in Cement Mortars

Abstract:

In this study, the utilization of two types of spongilites in various addition in cement mortars has been investigated with the purpose of exploring a new application of this natural pozzolans as cement mortar additives. The influence of the addition of spongilites on the physico-mechanical properties, frost-resistance, and microstructure of cement mortars as a function of time was studied. The results revealed that the rising proportion of spongilites in cement mortars causes increase in water retention of mortars, reduction of their bulk density, increase in porosity of mortars due to the growing predominance of capillary pores maintaining sufficient mortars strengths, and slightly increase in the frost-resistance of mortars. After initial tests, partial replacement of cement in fine-grained cement mortars with hitherto unexploited spongilites seems to be very promising. Based on the achieved results, a 20% cement replacement can be recommended as optimal.

• Periodical: Solid State Phenomena (Volume 325)
• Pages: 65-70
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.325.65
• Online since: October 2021
• Authors: Martin Vyšvařil*, Patrik Bayer, Tomáš Žižlavský
• Keywords: Frost Resistance, Microstructure, Porosity, Pozzolanic Additive, Spongilite, Strength, Water Absorption, Water Retention

References

[1] P. Bains, P. Psarras, J. Wilcox, CO2 capture from the industry sector, Prog. Energy Combust. 63 (2017) 146–172.

DOI: 10.1016/j.pecs.2017.07.001

[2] S.A .Miller, V.M. John, S.A. Pacca, A. Horvath, Carbon dioxide reduction potential in the global cement industry by 2050, Cem. Concr. Res. 114 (2018) 115–124.

DOI: 10.1016/j.cemconres.2017.08.026

[3] G.U. Fayomi, S.E. Mini, O.S.I. Fayomi, A.A. Ayoola, Perspectives on environmental CO2 emission and energy factor in Cement Industry, IOP Conf. Ser: Earth Environ. Sci. 331, 012035 (2019).

DOI: 10.1088/1755-1315/331/1/012035

[4] G. Moumin et al, CO2 emission reduction in the cement industry by using a solar calciner, Renew. Energy 145 (2020) 1578–1596.

DOI: 10.1016/j.renene.2019.07.045

[5] J. Šrámek, Relationships between mineralogy, physical-mechanical properties, and durability of cretaceous calcitic spongilites, in: J. D. Rodrigues et al. (Eds.), Proceedings of the 7th International Congress on Deterioration and Conservation of Stone, Laboratório Nacional de Engenharia Civil, Lisbon, 1992, p.57–66.

[6] P. Brotan, M. Gregerová, Assessment of the spongilitic marlstone building blocks from the Slaný historical city walls, Geosci. Res. Rep. 50 (2017) 9–16.

DOI: 10.3140/zpravy.geol.2017.01

[7] T. Táborský, Omezení vzniku křemičitoalkalické reakce kameniva v betonu, in: M. Paříková (Ed.), Sborník semináře Vápno, cement, ekologie 2010, VUMO, Prague, 2010 (in Czech).

[8] M.Y. Abdulwahid, Influences of different stone powders on pervious concrete strength, Struct. Concr. 2020, in press.

[9] T. Perraki, G. Kakali, E. Kontori, Characterization and pozzolanic activity of thermally treated zeolite, J. Therm. Anal. Calorim. 82 (2005) 109–113.

DOI: 10.1007/s10973-005-0849-5

[10] E. Navrátilová, P. Rovnaníková, Pozzolanic properties of brick powders and their effect on the properties of modified lime mortars, Constr. Build. Mater. 120 (2016) 530–539.

DOI: 10.1016/j.conbuildmat.2016.05.062

[11] M. Raverdy, F. Brivot, A.M. Paillére, R. Dron, Appréciation de I'Activité Pouzzolanique des Constituents Secondaires, in Vol. 3 of Proceedings of the 7th International Congress on the Chemistry of Cement, Éditions Septima, Paris, 1980, p.36–41.