Project detail

Possibilities of exploitation of flying ash with higher content of sulphates in the building industry

Duration: 01.01.2000 — 31.12.2002

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2000-01-01 - 2002-12-31)

On the project

Description in English
The main limited parametr of ash for utilisation in building industry is the sulphur content. It must be, expressed in form of 503, lower than 3% b.w. The situation in flying ash further utilisation changes. The changing conditions can be described as follows: - old types kettles and indrons in heating centres and power stations are replaced by new progressive ones mainly based on the fluid technology. Finely ground CaCO3 is mixed to coal which reacts with suplhates and so it is transformed to Ca504 I(anhydrite). The result is that the content of anhydrite in flaying ash may be several times larger value than is prescribed limit for utilisation in building industry.Most of power stations in Czech republic are equipped by technology for desulphuricationof gases based on so called wet way. The content of sulphates in flying ash depends on their content in coal used for combustion. All sources of coal with low content of sulphuric compounds have been exploited. Therefore the volume of

Mark

GA103/00/1185

Default language

Czech

People responsible

Kulísek Karel, doc. Ing., CSc. - principal person responsible

Units

Faculty of Civil Engineering
- beneficiary (2001-01-01 - not assigned)

Results

KULÍSEK, K.; NOVÁK, J.; LEBER, P. The utilization of industrial wastes in cellular concrete manufacture. In 14.ibausil-Internat.Baustofftagung. Weimar: Weimar: F.A.Finger Institut Bauhaus-Univ. Weimar, 2000. p. 899 ( p.)
Detail

SEBOK,T., VONDRUŠKA,M., KULÍSEK, K. Influence o MSFC-type dispersant composition on the performance of soluble anhydrite binders. Cement and Concrete Research, 2001, vol. 31, no. 11, p. 1593-1599. ISSN: 0008-8846.
Detail

SEBOK, T.; KULÍSEK, K. Leaching of Pollutants from solidified Flying Ash with high Content of Calcium Sulphate and Calcium Oxide. Environment Protection Engineering, 2001, vol. 27, no. 1, p. 49-57. ISSN: 0324-8828.
Detail

SEBOK, T., KULÍSEK, K. The compressive strength of samples containing fly ash with high content of calcium sulfate and calcium oxide. Cement and Concrete Research, 2001, vol. 31, no. 1, p. 1101-1107. ISSN: 0008-8846.
Detail

Responsibility: Kulísek Karel, doc. Ing., CSc.