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Influence of petrographical characteristics of silicate rocks on the quality of aggregates (CROSBI ID 95076)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Fistrić, Mladen ; Tomašić, Ivan ; Vrkljan Maja Influence of petrographical characteristics of silicate rocks on the quality of aggregates // Rudarsko-geološko-naftni zbornik, 14 (2002), 11-20-x

Podaci o odgovornosti

Fistrić, Mladen ; Tomašić, Ivan ; Vrkljan Maja

engleski

Influence of petrographical characteristics of silicate rocks on the quality of aggregates

The aggregate resistance to crushing was tested by means of the Los Angeles abrasion test. During this testing, an aggregate is subjected to dynamic load by impact and abrasion. The petrographic characteristics were examined with the petrographic and scanning electron microscope and by X-ray powder diffraction. In order to obtain the most correct evaluation of aggregates crushing resistance, four different values had been used: the recrushing index (Ir), the reduction ratio (RR), the Los Angeles abrasion value (LA) and the Los Angeles abrasion value residue (LAr.On the basis of the obtained results, the following petrographic factors have been revealed as the most important ones for rock aggregates resistance to crushing: a- the size of crystals, b&#8211 ; the form, arrangement and dimensions ratio of crystals, and, especially, c&#8211 ; the presence of microfractures in parent rock.

Rock aggregates; Crushing resistance; LA abrasion test

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Podaci o izdanju

14

2002.

11-20-x

objavljeno

0353-4529

Povezanost rada

Geologija

Indeksiranost