INVESTIGATION OF RELATIONS BETWEEN POROSITY, PORE STRUCTURE, AND CL- DIFFUSION OF FLY-ASH AND BLENDED CEMENT PASTES
INVESTIGATION OF RELATIONS BETWEEN POROSITY, PORE STRUCTURE, AND CL- DIFFUSION OF FLY-ASH AND BLENDED CEMENT PASTES
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DOI：
10.1016/0008-8846(86)90049-9
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发表时间：
1986-09-01
影响因子：
11.4
通讯作者：
ROY, DM
中科院分区：
文献类型：
--
作者：
LI, SQ;ROY, DM
燃煤副产物飞灰对水泥浆体的性能有很大影响。开展了一项研究，以帮助了解水泥浆体中飞灰和其他取代基的行为和功能。对硅酸盐水泥浆体的性能进行了比较，并与矿渣水泥、硅灰水泥进行了初步比较。讨论了水泥浆体的中值孔径、孔隙率和Cl-−扩散之间的关系，以及对扩散机理和掺混水泥浆体可能的孔结构的影响。测量包括非蒸散水(Wn)、水银孔隙率和孔结构、在外加电场影响下用快速方法进行的氯−迁移，以及对水的渗透性。对Cl-−扩散前后的X射线衍射物相进行了表征。
By-product fly ash from coal combustion influences the properties of cement pastes significantly. A study has been carried out to contribute to understanding the behavior and function of fly ash and other substituents in cement pastes. Comparisons are made with the properties of pastes of as-received portland cement and preliminary comparisons made with granulated blast furnace slag cement and silica fume-cement. Relations between the median pore size, porosity and Cl−diffusion of fly ash-cement pastes, and the implications of observations for diffusion mechanisms and the probable pore structure of the blended cement pastes are discussed. Measurements include non-evaporable water (Wn), porosity and pore structure by mercury porosimetry, Cl−transport by a rapid method under the influence of an applied electric field, and the permeability to water. X-ray diffraction phase characterization has been made before and after Cl−diffusion.