Influencia del uso de arena de cuarzo en el desgaste de adoquines que incorporan aluminato de estroncio

Abstract

The present research was conducted to design fluorescent bilayer pavers with a compression strength of 350 kgf/cm2. These pavers incorporated strontium aluminate (SrAl2O4:M), (M=Eu2+, Dy3+) and quartz (SiO2) in the mix, and their influence on the wear of the wearing layer was evaluated. To achieve this, tests were carried out to determine the physical and mechanical properties of the aggregates, which qualified for use in the mix design employed in the manufacturing of the pavers. Once the pavers were manufactured, tests for compression strength and wear (Böhme method) were conducted. The compression results showed that the combination of strontium aluminate and quartz did not improve the compression strength; however, after 14 days of curing, the strength easily surpassed 350 kgf/cm2. Regarding wear, the influence of SrAl2O4:M and SiO2 contributed to the reduction of wear in the pavers, with the maximum recorded value being 11 765,13 mm3/ 5 000 mm2. On the other hand, dosing SrAl2O4:M, relative to the weight of the cement, did not yield visible results of the luminosity intensity; therefore, specimens were manufactured dosed based on the weight of the mix used.