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  2. Pressure grouting - Wikipedia

    en.wikipedia.org/wiki/Pressure_grouting

    Different grout may be needed for fine grained and coarse grained soils in the grouted area. The greatest use of pressure grouting is to improve geomaterials (soil and rock). The purpose of grouting can be either to strengthen a formation or to reduce water flow through it. It is also used to correct faults in concrete and masonry structures.

  3. Grout - Wikipedia

    en.wikipedia.org/wiki/Grout

    Grout sealer is a water-based or solvent-based sealant applied over dried grout that resists water, oil, and acid-based contaminants. Grout cleaner is a basic cleaning solution that is applied on grout lines and removes the dirt and dust. [9] A die grinder is used for faster removal of old grout compared to a standard grout saw.

  4. Vortex tube - Wikipedia

    en.wikipedia.org/wiki/Vortex_tube

    The vortex tube, also known as the Ranque-Hilsch vortex tube, is a mechanical device that separates a compressed gas into hot and cold streams. The gas emerging from the hot end can reach temperatures of 200 °C (390 °F), and the gas emerging from the cold end can reach −50 °C (−60 °F). [ 1 ]

  5. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    An alternative water treatment is called water conditioning, in which minerals remain in the water, but are altered so they do not form scale. Although the United States has standards for measuring the minerals in water, it does not have standards for measuring scale forming ability of water. Instead, US researchers use the German DVGW-W512 ...

  6. Grout curtain - Wikipedia

    en.wikipedia.org/wiki/Grout_curtain

    A grout curtain is a barrier that protects the foundation of a dam from seepage and can be made during initial construction or during repair. [1] Additionally, they can be used to strengthen foundations and contain spills.

  7. Cured-in-place pipe - Wikipedia

    en.wikipedia.org/wiki/Cured-in-place_pipe

    As one of the most widely used rehabilitation methods, CIPP has applications in sewer, water, gas, chemical and district heating pipelines ranging in diameter from 0.1 to 2.8 meters (2–110 inches). The process of CIPP involves inserting and running a felt lining into a preexisting pipe that is the subject of repair.

  8. Casing (borehole) - Wikipedia

    en.wikipedia.org/wiki/Casing_(borehole)

    Casing Diameters of a Borehole Casing Diagram premium gas tight connections on a casing string. Casing is a large diameter pipe that is assembled and inserted into a recently drilled section of a borehole. Similar to the bones of a spine protecting the spinal cord, casing is set inside the drilled borehole to protect and support the wellstream.

  9. Marsh funnel - Wikipedia

    en.wikipedia.org/wiki/Marsh_funnel

    If water is used, the time should be 26 +/- 0.5 seconds. [2] If the time is less than this the tube is probably enlarged by erosion, if more it may be blocked or damaged, and the funnel should be replaced. In some companies, and Europe in particular, the volume collected is a litre, for which the water funnel time should be 28 seconds.

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