6533b7d5fe1ef96bd12645ab

RESEARCH PRODUCT

Formation of calcium containing minerals in the low temperature dolomite ceramics

Inta VitinaL BidermanisGerda GaidukovaV HodirevaLauma LindinaJānis KreilisLinda Krage

subject

Materials scienceMineralMetallurgyDolomiteMineralogychemistry.chemical_elementMineral compositionCalciumRaw materialchemistry.chemical_compoundchemistryRegional developmentvisual_artvisual_art.visual_art_mediumCarbonateCeramic

description

In order to elaborate low temperature dolomite ceramics, potentially suitable for the production of building materials, local low carbonate clay and dolomite siftings were used as a raw materials. Relationship between mechanical properties, mineral composition and firing temperature kept in the range of 600-800° C were established. According to the obtained data it was detected that the optimal burning temperature, giving the highest crushing strength (40 MPa) was around 700-750° C, optimal proportion of dolomite and clay expressed as ratio between CaO and Al2O3 - 2.5 wt%. Gradual formation of C3A occurs during firing, yielding C4AHX, i.e. mainly C4AH13 after hydratation of obtained composite material. The work was carried out in the frame of project, Innovative low temperature composite materials from local mineral deposits" (N°2010/024/2DP/2.1.1.1.0/10/APIA/VIAA/152) financed by the European Regional Development Foundation (Activity 2.1.1.1.).

yearjournalcountryeditionlanguage
2011-12-02IOP Conference Series: Materials Science and Engineering
https://doi.org/10.1088/1757-899x/25/1/012006