An influence of a High-Voltage Electrostatic Treatment on Pozzolanic Activity of Fly Ash and Properties of Cement – Fly Ash Pastes
N. M. Zaichenko, Al-Shamsi Khaled Ali Said
Donbas National Academy of Civil Engineering and Architecture
Annotation: An influence of a high-voltage electrostatic treatment on pozzolanic activity of fly ash and properties of fly ash-cement pastes is considered. An electro-physically activated fly-ash powder is characterized by a higher hydration and pozzolanic activity. This affects the rheology of cement fly-ash pastes, fly-ash particles playing the role of a plasticizing agent in the system. The higher degree of fly-ash hydration, the higher degree of cement hydration, that provides an increase of ash-cement paste compressive strength. A retrofitting of adhesive contacts on the boundary of cement paste–mineral additive (electro-heterogeneous contacts) will effect the formation of a more homogeneous and dense microstructure of a cement paste and concrete.
Keywords: fly-ash, Portland cement, corona electrostatic treatment, degree of hydration, spherical particles, compressive strength.
Pages: 31-38.
Link for citation: Zaichenko, N. M.; Said, Al-Shamsi Khaled Ali An influence of a High-Voltage Electrostatic Treatment on Pozzolanic Activity of Fly Ash and Properties of Cement – Fly Ash Pastes. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2008. – Vol. 4, N 1. – Р. 31-38. – URL: https://donnasa.ru/publish_house/journals/spgs/2008-1/04_zajchenko_al_schamsi_haled_ali_said.pdf (date of access: 16.09.2024). (in Russian)
Vol. 4, N 1 (2008)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture