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  2. Air vortex cannon - Wikipedia

    en.wikipedia.org/wiki/Air_vortex_cannon

    An air vortex cannon is a toy that releases doughnut-shaped air vortices — similar to smoke rings but larger, stronger and invisible. The vortices can ruffle hair, disturb papers or blow out candles after travelling several metres. An air vortex cannon can be made easily at home, [1] [2] from just a cardboard box. [3]

  3. Air entrainment - Wikipedia

    en.wikipedia.org/wiki/Air_entrainment

    Air entrainment in concrete is the intentional creation of tiny air bubbles in a batch by adding an air entraining agent during mixing. A form of surfactant (a surface-active substance that in the instance reduces the surface tension between water and solids) it allows bubbles of a desired size to form.

  4. How Much Do Granite Countertops Cost? - AOL

    www.aol.com/much-granite-countertops-cost...

    For premium support please call: 800-290-4726 more ways to reach us

  5. Voided biaxial slab - Wikipedia

    en.wikipedia.org/wiki/Voided_biaxial_slab

    Concrete is poured around these plastic forms to create internal voids in the slab A voided biaxial slab installation in Turkey. Voided biaxial slabs, sometimes called biaxial slabs or voided slabs, are a type of reinforced concrete slab which incorporates air-filled voids to reduce the volume of concrete required.

  6. Vortex engine - Wikipedia

    en.wikipedia.org/wiki/Vortex_engine

    Heated air (33, 34) from the crossway cooling tower (61) enters the concrete vortex arena (2) via two rings of directing louvers (3, 5, height exaggerated for clarity) and rises (35). The upper ring of louvers (5) seals the low-pressure end of the vortex with a thick, relatively high-speed air-curtain (34).

  7. Schmidt hammer - Wikipedia

    en.wikipedia.org/wiki/Schmidt_hammer

    The test hammer hits the concrete at a defined energy. Its rebound is dependent on the hardness of the concrete and is measured by the test equipment. By reference to a conversion chart, the rebound value can be used to determine the concrete's compressive strength. When conducting the test, the hammer should be held at right angles to the ...

  8. The Instant Vortex air fryer is my all-in-one breakfast ... - AOL

    www.aol.com/lifestyle/review-instant-vortex-air...

    Simply set the air fryer to 270 degrees, let it come to temp and place whole eggs directly from the fridge into the basket. Set the time to 10 minutes if want soft boiled, 12 minutes for medium to ...

  9. Flow table test - Wikipedia

    en.wikipedia.org/wiki/Flow_table_test

    The flow table test or slump-flow test is a method to determine consistency of fresh concrete. Flow table test is also used to identify transportable moisture limit of solid bulk cargoes. [ 1 ] It is used primarily for assessing concrete that is too fluid (workable) to be measured using the slump test , because the concrete will not retain its ...

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