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在建筑工程中,混凝土或钢筋混凝土结构物,经常发生裂缝或裂纹,它影响着建筑物的外观和结构使用,这是建筑工程中急需解决的课题。产生裂缝或裂纹的原因很多,一般发生于混凝土硬化前塑性阶段中,由于混凝土骨料沉落离析,水的蒸发速度不均等原因而出现,或者在混凝土硬化后,由于混凝土骨料收缩不均,内外温差附加应力等原因而产生。另外,在混凝土施工中,支座下
In the construction project, cracks or cracks often occur in concrete or reinforced concrete structures, which affects the appearance of the building and the use of the structure. This is an urgent problem to be solved in the construction project. There are many causes of cracks or cracks, which generally occur in the plastic stage before the concrete is hardened, and occur due to the concrete aggregate falling and falling, the uneven evaporation rate of the water, or the uneven concrete shrinkage after the concrete has hardened. Internal and external temperature differences add stress and other causes. In addition, in the concrete construction, under the support