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    水泥地坪硬化产生的原因
    来源:http://www.jndmzp.com   时间:2016-3-1 15:17:07
    水灰比过大:即拌合的混凝土水量大,导致混凝土表面泌水,降低混凝土表面强度。
    The water cement ratio is too large: concrete mixing water is large, leading to the concrete surface bleeding, reduce the strength of concrete surface.
    砂石料的级配不合理、含泥量高:骨料级配不合理、过细的土砂也易导致地面起砂,影响水泥的早期水化及混凝土的凝结。
    Sand and gravel gradation unreasonable, mud containing high amount: aggregate gradation unreasonable, meticulous soil sand also easily lead to the surface of the sand, the effect of cement early hydration and concrete setting.
    施工过程中的过分振捣:加剧混凝土表面的泌水,导致混凝土表面强度较低。
    Excessive vibration in the construction process of the concrete surface vibrating: increased bleeding, leading to the concrete surface strength is low.
    养护不当:未能及时养护或养护不充分,暴晒或大风导致混凝土表面大量失水,表面得不到充分水化,导致强度较低。
    Improper maintenance: not timely maintenance or maintenance is not sufficient, or exposure to wind in the surface of the concrete surface of a lot of water loss, without adequate hydration, leading to lower strength.
    其它原因:压光时间掌握的不好、混凝土表面未达到一定的强度就上人作业、低温下施工混凝土表面受冻等。
    Other reasons: pressure light time to grasp, the concrete surface did not reach certain strength on operation, low temperature construction concrete surface from freezing and other.
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