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Browsing by Subject "plastifiers"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Wpływ plastyfikatorów na właściwości reologiczne zaczynów uszczelniających do prac geoinżynieryjnych
    (2007) Stryczek, Stanisław; Gonet, Andrzej; Wiśniowski, Rafał
    Apart from the selection of proper method and technology, one of the most important factors affecting the efficiency of sealing ground and rocks with geoengineering methods (hole injection) is the selection of a sealing slurry having proper technological parameters adjusted to the existing geologic, geotechnic, mining and hydrogeologic conditions. One of the most important parameters of fresh slurry are its rheological propeties (parameters and rheological model). With well selected rheological parameters it is possible to calculate flow resistivities in the circulation system, which in turn, results in: selection of technological parameters of injection (time and pressure of injection), range of penetration of the slurry in the injected medium. The results of analyses of influence of selected Polish plastifiers on rheological properties of sealing slurries are presented in the paper.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Wpływ superplastyfikatora na parametry technologiczne zaczynów uszczelniających sporządzonych na osnowie cementów portlandzko-popiołowych
    (2008) Stryczek, Stanisław; Wiśniowski, Rafał; Kumała, Bartłomiej
    The paper is devoted to the selection of a hydraulic binder, followed by laboratory analyses, in the course of which the influence of the superplastifier Arpoment P on technological parameters of sealing slurries is measured, with special emphasis on rheological parameters. The obtained results enabled determining the influence of the plastifier on the type of the rheological model. With properly selected rheological model it is possible to accurately calculate the flow resistivity of sealing slurry in the process of cementing casing pipes.