Concrete Washout - Search
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  1. epa.gov
    https://www3.epa.gov › npdes › pubs › concretewashout.pdf
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    Stormwater Best Management Practices: Concrete Washout

    • Learn how to collect, recycle, and reuse concrete washout water and solids to prevent pollution of surface waters and groundwater. Find out the environmental and human health impacts of concrete washou… See more

    Concrete and its ingredients

    Concrete is a mixture of cement, water, and aggregate material. Portland cement is made by heating a mixture of … See more

    Concrete washout

    After concrete is poured at a construction site, the chutes of ready mixed concrete trucks and hoppers of concrete pump trucks must be washed out to remove the remaining concrete before it hardens. Equipment … See more

    Solids recycling

    The course aggregate materials that are washed off concrete truck chutes into a washout container can be either separated by a screen and placed in aggregate bins to be reused at the construction site or returned to … See more

    Hardened concrete recycling

    When the washwater in a construction site concrete washout container has been removed or allowed to evaporate, the hardened concrete that remains can be crushed (Fig. 6) and reused as a constructio… See more

    Washout Containers

    Different types of washout containers are available for collecting, retaining, and recycling the washwater and solids from washing down mixed truck chutes and pump truck hoppers at construction sites. See more

    Chute washout bucket and pump

    After delivering ready mixed concrete and scraping the last of the customer’s concrete down the chute, the driver hangs a washout bucket shown in Figure 8 (see red arrow) on the end of the truck’s chute and secures the hose t… See more

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