Publication detail

Use of Spongilites as Pozzolanic Additives in Cement Mortars

VYŠVAŘIL, M. BAYER, P. ŽIŽLAVSKÝ, T.

Original Title

Use of Spongilites as Pozzolanic Additives in Cement Mortars

English Title

Use of Spongilites as Pozzolanic Additives in Cement Mortars

Type

conference paper

Language

en

Original 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 physicomechanical 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.

English 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 physicomechanical 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.

Keywords

spongilite; pozzolanic additive; water retention; strengt;, microstructure; porosity; frost resistance; water absorption

Released

11.10.2021

Publisher

Trans Tech Publications Ltd.

Location

Switzerland

ISBN

978-3-0357-3870-4

Book

Binders, Materials and Technologies in Modern Construction VII

Pages from

65

Pages to

70

Pages count

6

URL

https://www.scientific.net/SSP.325.65.pdf

Documents

BibTex 


@inproceedings{BUT172221,
  author="Martin {Vyšvařil} and Patrik {Bayer} and Tomáš {Žižlavský}",
  title="Use of Spongilites as Pozzolanic Additives in Cement Mortars",
  annote="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 physicomechanical 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.",
  address="Trans Tech Publications Ltd.",
  booktitle="Binders, Materials and Technologies in Modern Construction VII",
  chapter="172221",
  howpublished="online",
  institution="Trans Tech Publications Ltd.",
  number="325",
  year="2021",
  month="october",
  pages="65--70",
  publisher="Trans Tech Publications Ltd.",
  type="conference paper"
}