Alkaline binders of Na2O-Al2O3 -SIO2 -H2O, Na2O-MGO-SIO2-H2O, Na2O-MGO-Al2O3-H2O systems for refractory concretes based on soluble sodium silicates and aluminates
O. M. Yefremov, T. P. Kitsenko, K. T. Shirinova
Donbas National Academy of Civil Engineering and Architecture
Annotation: Alkaline binders of the Na2O-Al2O3-SiO2-H2O, Na2O-MgO-SiO2 -H2O, Na2O-MgO-Al2O3 -H2O systems have been developed on the basis of water solutions of sodium silicates and aluminates. Refractory mineral materials are proposed as hardening (structure forming) components. That made it possible to admix not more than 2% of flux oxide – Na2O to concretes that does not practically influence their limiting service temperature. The structure-phase changes of binder hardening products after heating at ordinary (20-110o C), average (800-900o C) and high (1200-1700o C) temperatures have been studied. The influence of 2-6% Na2O on refractoriness and deformation temperature indices under the load of alumino-silicate (30-95% Al2O3), magnesia (40-90% MgO), and magnesia-aluminate (95% MgO·Al2O3) compositions have been investigated.
Keywords: a lkaline binders, soluble sodium silicates and aluminates, refractory concrete.
Pages: 165-171.
Link for citation: Yefremov, O. M.; Kitsenko, T. P.; Shirinova, K. T. Alkaline binders of Na2O-Al2O3 -SIO2 -H2O, Na2O-MGO-SIO2-H2O, Na2O-MGO-Al2O3-H2O systems for refractory concretes based on soluble sodium silicates and aluminates . – Text : electronic. – In: Modern Industrial and Civil Construction. – 2007. – Vol. 3, N 3. – Р. 165-171. – URL: https://donnasa.ru/publish_house/journals/spgs/2007-3/06_efremov_kicenko_schirinova.pdf (date of access: 16.09.2024). (in Russian)
Vol. 3, N 3 (2007)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture