Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Vadim Potapov"'
Publikováno v:
Nanomaterials, Vol 10, Iss 4, p 624 (2020)
The technological mode of obtaining amorphous SiO2 nanopowders based on hydrothermal solutions is proposed in this study. Polycondensation of orthosilicic acid as well as ultrafiltration membrane separation, and cryochemical vacuum sublimation were u
Externí odkaz:
https://doaj.org/article/cae02ffe86564757ad9347331f06c4fd
Publikováno v:
Journal of Materials in Civil Engineering. 34
Publikováno v:
Journal of Sol-Gel Science and Technology. 94:681-694
Experiments were performed to obtain SiO2 sols, gels, and mesoporous nanopowders based on hydrothermal medium. To achieve this, polycondensation of orthosilicic acid (OSA) at certain pH and temperature, as well as ultrafiltration membrane concentrati
Publikováno v:
Journal of Materials in Civil Engineering. 33
The modification of cement concretes with various silica-containing additives is an urgent task that can significantly improve their physical and mechanical properties, as well as operation...
Publikováno v:
Вулканология и сейсмология. :18-28
Numerical simulation of the process of polycondensation of orthosilicic acid and colloid silica particles growth under different physical and chemical conditions was done: temperature, pH, ionic strength and other. Calculated dependences of orthosili
Autor:
Ismael Flores-Vivian, Vadim Potapov, Marina Ivanovna Kozhuhova, Rani Pradoto, Konstantin Sobolev
Publikováno v:
Bulletin of Belgorod State Technological University named after. V. G. Shukhov. 3:6-16
Publikováno v:
Theoretical Foundations of Chemical Engineering. 52:599-606
Experiments on the preparation of sols and nanopowders of SiO2 based on hydrothermal solutions are performed. In order to achieve a result, processes of polycondensation of orthosilicic acid, ultrafiltration membrane concentration, and cryochemical v
Autor:
Vadim Potapov, A. A. Serdan
Publikováno v:
Glass Physics and Chemistry. 43:585-592
SiO2 sols and nanopowders are produced from hydrothermal solutions using the following processes: polycondensation of orthosilicic acid, ultrafiltration membrane concentration, and cryochemical vacuum sublimation. The physical–chemical characterist
Autor:
Konstantin Sobolev, Rani Pradoto, Vadim Potapov, Ismael Flores-Vivian, Mohamadreza Moini, Marina Kozhukhova
Publikováno v:
Frontiers of Structural and Civil Engineering. 11:436-445
The nanoparticles of SiO2 were used in cement systems to modify the rheological behavior, to enhance the reactivity of supplementary cementitious materials, and also to improve the strength and durability. In this research, low-cost nano-SiO2 particl
Publikováno v:
Construction and Building Materials. 269:121307
A new technological method for producing a nano-modifier for cement concretes from renewable source of hydrothermal solution using the processes of polycondensation of orthosilicic acid and ultrafiltration membrane concentration is proposed. Accordin