玻璃钢人物雕塑定制-玻璃钢人物雕塑开裂怎么办

2018.12.25

对于玻璃钢雕塑来说，最大的危害就是开裂问题。玻璃钢人物雕塑在终凝前几乎没有强度或强度很小，或者泥塑刚刚终凝而强度很小时受高温或较大风力的影响，泥塑表面失水过快造成毛细管中产生较大的负压而使泥塑体积急剧收缩，而此时泥塑的强度又无法抵抗其本身收缩，因此产生龟裂。影响泥塑塑性收缩开裂的主要因素有水灰比，泥塑的凝结时间，环境温度，风速，相对湿度等。

For FRP sculpture, the biggest hazard is cracking. Mud sculpture has almost no strength or very low strength before final setting, or the strength of mud sculpture just after final setting is affected by high temperature or strong wind. Excessive water loss on the surface of mud sculpture causes large negative pressure in the capillary tube and makes the volume of mud sculpture shrink sharply. At this time, the strength of mud sculpture can not resist its own shrinkage, so cracking occurs. The main factors affecting plastic shrinkage cracking of clay plastics are water cement ratio, setting time of clay plastics, ambient temperature, wind speed, relative humidity and so on.

玻璃钢人物雕塑温度裂缝多发生在大体积泥塑表面或温差变化较大地区的泥塑结构中，泥塑浇筑后，在硬化过程中，水泥水化产生大量的水化热。由于泥塑的体积较大，大量的水化热聚集在泥塑内部而不易散发，导致内部温度急剧上升，而泥塑表面散热较快，这样就形成内外的较大温差，较大的温差造成内部与外部热胀冷缩的程度不同，使泥塑表面产生一定得拉应力，当拉应力超过泥塑的抗拉强度极限时，泥塑表面就会产生裂缝，这种裂缝多发生在泥塑施工中后期。

Temperature cracks in FRP sculpture mostly occur on the surface of large volume clay sculpture or in the clay structure with large temperature difference. After the clay plastics are poured, a large amount of hydration heat is generated by cement hydration during the hardening process. Because of the large volume of clay plastics, a large amount of hydration heat gathers in the interior of clay plastics and is not easy to disperse, which leads to a sharp rise in the internal temperature and a faster heat dissipation on the surface of clay plastics. This results in a larger temperature difference between the interior and the exterior, resulting in a different degree of thermal expansion and contraction between the interior and the exterior, which causes a certain tensile stress on the surface of clay plastics. When the tensile stress exceeds the ultimate tensile strength of clay plastics, Cracks will occur on the surface of clay-plastics, which mostly occur in the middle and late stages of clay-plastics construction.

要防止玻璃钢人物雕塑泥塑开裂，需要尽量保持潮湿应该会有所改善或者可以尝试用超薄的塑料膜裹好，要么就要增加泥中纤维，可以用废旧报纸用水泡软揉碎在一起即可，再就是将分好的一份泥擀成两块泥饼，之后将一片适量的棉絮摞着一块一块的弄开，再按实成一块泥饼，这样反复多次直到将棉絮与泥很好地融合在一起为止。棉絮在这里其起到了一个防止开裂的作用。除此之外，还要注意泥的质量，成品要阴干等等。

To prevent the cracking of FRP sculpture clay sculpture, it is necessary to keep as wet as possible, or try to wrap it in super-thin plastic film, or to increase the fibers in the clay, which can be crushed together by foaming waste newspapers, and then rolled a piece of mud into two mud cakes, after which a piece of cotton flocculent will be rolled one by one, and then consolidated into one. A piece of mud cake, which is repeated many times until the cotton floss and mud are well fused together. Here the cotton floss plays a role in preventing cracking. In addition, we should pay attention to the quality of mud, the finished products should be dried in shade and so on.

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