by Pre mixed commercial concrete often has an initial slump of up to 200mm and an initial expansion of up to 500mm, at which point the concrete does not bleed or slightly bleeds.
But less than 2 hours after the concrete is delivered to the construction site or completed, a large amount of bleeding occurs in the concrete, which is called delayed bleeding of concrete.
The reasons for the occurrence of delayed bleeding in concrete are caused by the comprehensive factors of the proportioning materials, mainly including the following aspects and preventive measures taken.
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