Influence of fly ash on abrasion resistance of concretes with their additions / Aneta Nowak-Michta // W: Materials Structure & Micromechanics of Fracture VII : Selected, peer reviewed papers from the 7th ... więcej

Influence of fly ash on abrasion resistance of concretes with their additions / Aneta Nowak-Michta // W: Materials Structure & Micromechanics of Fracture VII : Selected, peer reviewed papers from the 7th International Conference on Materials Structure & Micromechanics of Fracture (MSMF-7), July 1-3, 2013, Brno, Czech Republic / ed. by Pavel Šandera. – Durnten-Zurich : Trans Tech Publications Ltd, 2014. – (Key Engineering Materials, ISSN 1013-9826 ; Vol. 592-593). – S. 651-654 : tab., wykr. – Bibliogr. 7 poz., Abstr. – doi 10.4028/www.scientific.net/KEM.592-593.651. – ISBN 978-3-03785-934-6

The influence of fly ash quality and quantity on abrasion resistance of hardened concretes with siliceous fly ash addition is analysed in the paper. Abrasion resistance was measured in two standard tests ... więcej

The influence of fly ash quality and quantity on abrasion resistance of hardened concretes with siliceous fly ash addition is analysed in the paper. Abrasion resistance was measured in two standard tests according to EN 1338: 2005: reference test of the Wide Wheel and alternative test of the Bohme. Cement was replaced with 20, 35, and 50% of Class F siliceous fly ash in three categories of losses of ignition A, B and C by mass. The water to binder ratio, the air-entraining and the workability of mixtures were maintained constant at 0.38, 4.5% and 150 mm respectively. Test results indicated that in both methods, all tested concretes according to EN 1338: 2005 could be classified to 4-the highest class of abrasion resistance. In reference test of the Wide Wheel fly ash quality and quantity not influences abrasion resistance. However, in alternative, Böhme test abrasion resistance lowering with growth quantity of fly ash in binder, while loss of ignition of fly ash no influenced abrasion resistance. There were no correlation between the abrasion resistance and the compressive strength.