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    Strength of concrete for Parking structure suspended slab

    Minimum is 35 Mpa. It is not easy to make a C1 concrete (35 MPa) that is useable with a low w/c ratio (0.40 as per CSA23.1). Super-plasticizers will be needed so the strength is not compromised by the finishers wanting to add more water for workability. If the suspended parking slab is...

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