Publication detail

Flue gas desulfurization gypsum: Study of basic mechanical, hydric and thermal properties

TESÁREK, P. DRCHALOVÁ, J. KOLÍSKO, J. ROVNANÍKOVÁ, P. ČERNÝ, R.

Original Title

Flue gas desulfurization gypsum: Study of basic mechanical, hydric and thermal properties

Type

journal article - other

Language

English

Original Abstract

Flue gas desulfurization (FGD) gypsum is a waste material produced in desulfurization of flue gases in power stations and heating plants in high amounts. However, the industrial use of FGD gypsum is insufficient considering the amount of its production. Nowadays, it is mostly used for the production of gypsum plasterboards only, and the rest is deposited at waste disposal sites. Calcined gypsum as a low-energy material can be produced with advantage from the waste FGD gypsum by its dehydration at the temperatures of 110-150 C. The solid structure of calcined gypsum can then be created by reverse hydration. Due to the very low price and large availability of FGD gypsum, the material has a good potential for applications in building structures, possibly also as a material of load-bearing structures. One of the reasons for the neglect of the material by building industry is the almost complete lack of knowledge of its properties. In this paper, the measurements of basic mechanical, thermal and hydric parameters, namely compressive strength, bending strength, thermal resistance, frost resistance, moisture diffusivity, water vapor diffusion coefficient, sorption isotherms, water retention curve, thermal conductivity, volumetric heat capacity, and linear thermal expansion coefficient, of hardened flue gas desulfurization gypsum are presented.

Keywords

Flue gas desulfurization (FGD) gypsum; Calcined gypsum; Mechanical properties; Thermal properties; Hydric properties

Authors

TESÁREK, P.; DRCHALOVÁ, J.; KOLÍSKO, J.; ROVNANÍKOVÁ, P.; ČERNÝ, R.

Released

2. 1. 2007

ISBN

0950-0618

Periodical

Construction and building materials

Year of study

2007

Number

21

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1500

Pages to

1509

Pages count

10

BibTex

@article{BUT44541,
  author="Pavel {Tesárek} and Jaroslava {Drchalová} and Jiří {Kolísko} and Pavla {Rovnaníková} and Robert {Černý}",
  title="Flue gas desulfurization gypsum: Study of basic mechanical, hydric and thermal properties",
  journal="Construction and building materials",
  year="2007",
  volume="2007",
  number="21",
  pages="1500--1509",
  issn="0950-0618"
}