Akademik Veri Yönetim Sistemi
6 th International Conference on Materials Science and Nanotechnology For Next Generation (MSNG2019), Niğde, Türkiye, 16 - 18 Kasım 2019, ss.357-363
Calcium magnesium acetate (CMA) is an environmentally friendly alternative to sodium and/or calcium chloride
for the use of de-icing salt on highways. Owing to the several advantages such as low corrosion for asphalt and
concrete structures and multi-purpose availability, it is highly preferred for the use of road-salt. In this study,
dolomitic rocks were investigated to synthesize the CMA in laboratory conditions. For this purpose, the initial size
of rocks was manually reduced and the dolomitic materials with a particle size range of less than 0.5 mm were
prepared for experimental studies. The prepared materials were utilized in leaching tests where dilute acetic acid
(CH3COOH) solutions at a specific concentration of 40% were used for the dissolution of dolomite minerals.
During leaching tests, the effects of leaching time (T, min), temperature (t, °C) as well as the ratio of solid to liquid
(S/L) on the variations in dolomite dissolution were investigated. As a result of these investigations, it was
determined that the average of dolomite dissolution rate were found to be 74.60% under the conditions of T = 180
min, t = 80 °C and S/L = 10%. The chemical constituents of the CMA as a final product was determined by
crystallizing and evaporating of leach solutions at 80 ‒ 90 °C with a heating control procedure. X-Ray diffraction
(XRD) and Fourier-transform infrared spectroscopy (FTIR) analyses were used for the characterization of CMA
products and the results showed that the CMA mainly comprises three main phases with different quantities:
calcium magnesium acetate (59.7% ‒ 66.1%), calcium acetate (25.7% ‒ 31.5%) and magnesium acetate (8.2% ‒
9.3%).