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  2. Flow table test - Wikipedia

    en.wikipedia.org/wiki/Flow_table_test

    Equipment; flow table, Abrams cone, water bucket and broom. The cone filled with concrete, prior to lifting. The diameter of the resulting flow is measured. 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]

  3. Floor cleaning - Wikipedia

    en.wikipedia.org/wiki/Floor_cleaning

    Have a floor cleaning solution or spray bottle for the appropriate floor. If you are cleaning stone floors (marble, granite, travertine, etc.), make sure the cleaning agent states that it is for stones. An acidic tile cleaning solution can be used on ceramic and porcelain floors; After spraying the tile or stone floors in a small area, use a ...

  4. Floor scrubber - Wikipedia

    en.wikipedia.org/wiki/Floor_scrubber

    A floor scrubber is a floor cleaning device. It can be a simple tool such as a floor mop or floor brush , or in the form of a walk-behind or a ride-on machine to clean larger areas by injecting water with cleaning solution, scrubbing, and lifting the residue off the floor.

  5. Downwash - Wikipedia

    en.wikipedia.org/wiki/Downwash

    The effect of downwash from a hovering Sikorsky Seahawk is clearly visible on the surface of water below.. In aeronautics, downwash is the change in direction of air deflected by the aerodynamic action of an airfoil, wing, or helicopter rotor blade in motion, as part of the process of producing lift. [1]

  6. Commercial cleaning - Wikipedia

    en.wikipedia.org/wiki/Commercial_cleaning

    Commercial cleaning companies are contracted to carry out cleaning jobs in a variety of premises.Commercial cleaners, often referred to as custodians or janitors, work in a many different types for building such as schools, banks, offices, etc. As a janitor or custodian, the main job duty is to disinfect/ pick up in the fast-paced environments ...

  7. Water–cement ratio - Wikipedia

    en.wikipedia.org/wiki/Water–cement_ratio

    A lower ratio leads to higher strength and durability, but may make the mix more difficult to work with and form. Workability can be resolved with the use of plasticizers or super-plasticizers. A higher ratio gives a too fluid concrete mix resulting in a too porous hardened concrete of poor quality.

  8. Creep and shrinkage of concrete - Wikipedia

    en.wikipedia.org/.../Creep_and_shrinkage_of_concrete

    Concrete creep is essentially the sagging of concrete over time. Creep and shrinkage of concrete are two physical properties of concrete.The creep of concrete, which originates from the calcium silicate hydrates (C-S-H) in the hardened Portland cement paste (which is the binder of mineral aggregates), is fundamentally different from the creep of metals and polymers.

  9. Polished concrete - Wikipedia

    en.wikipedia.org/wiki/Polished_concrete

    Polished concrete may be considered a form of sustainable design flooring, if less material is used than in comparable types of flooring. [citation needed] Polished concrete floors have the following advantages: low-maintenance [7] – polished concrete is easily maintained with the use of clean water or a neutral pH cleaner. The application of ...

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