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彩色混凝土表面出现小裂纹的原因和预防措施

发布时间:2019-03-16 浏览次数:175
彩色混凝土表面出现小裂纹的原因和预防措施
缘由剖析:压模机遇已过,混凝土过干,压模时会呈现小裂纹。夏季施工时太阳直晒招致混凝土外表过干,而混凝土内部还未凝固,压模时在纹理棱角容易呈现细小裂纹。振捣不充沛,大石子浮在外表,或混凝土内气泡没有完整排出,都可能在废品外表拱开小裂纹。养护不及时也会形成外表龟裂。

Cause analysis: the opportunity of pressing die has passed, and when concrete is too dry, there will be small cracks in pressing die. In summer construction, direct sunshine causes the surface of concrete to be too dry, while the interior of concrete has not yet solidified, so small cracks are easy to appear in the texture edges and corners when pressing moulds. Insufficient vibration, large stones floating on the surface, or air bubbles in the concrete are not completely discharged, may open small cracks on the surface of waste products. Failure to maintain in time can also lead to appearance cracks.


彩色混凝土表面出现小裂纹的原因和预防措施



预防措施:依据施工时节及混凝土本身的参数严厉依照实验所肯定的时间停止压模施工。避开夏季正午时间施工或在施工时搭设遮阳棚停止彩色混凝土作业。严厉依照混凝土施工工艺施工,保证混凝土质量。上维护剂之前,小裂纹能够用脱模粉或强固剂停止修复。

Preventive measures: According to the construction time and the parameters of concrete itself, the pressing die construction should be stopped strictly according to the time confirmed by the experiment. Avoid construction at noon in summer or set up a shade during construction to stop colored concrete work. Strictly follow the concrete construction technology to ensure the quality of concrete. Small cracks can be repaired with demoulding powder or strengthening agent before maintenance agent is applied.





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