近年来，GRC构件开始大量出现在应用中。下面从导致GRC构件开裂的诸多因素来介绍对GRC构件的分析，并简要介绍其应对策略和方案。我希望它可以对大家有所帮助。
In recent years, GRC components began to appear in a large number of applications. The following introduces the analysis of GRC members from the many factors that lead to the cracking of GRC members, and briefly introduces their coping strategies and solutions. I hope it can help you.
GRC构件的开裂程度因地区而异。在南方，特别是沿海地区，气候潮湿。一年中大部分时间空气的相对湿度约为90%。在这种高温潮湿的气候下，GRC构件的含水率总是很高。如不采取特殊干燥措施，自然状态下的组分水分含量不能低于标准规定的10%。
The degree of cracking of GRC members varies from region to region. In the south, especially in the coastal areas, the climate is humid. The relative humidity of the air is about 90% for most of the year. In this high temperature and humid climate, the moisture content of GRC components is always very high. If no special drying measures are taken, the moisture content of components in natural state shall not be less than 10% of the standard.
因此，南方，尤其是沿海地区，更容易开裂。开裂通常发生在构件到构件和构件到梁的接头处。裂纹的宽度与构件的干缩值、冷缩值和构件的横向长度有关。大多数裂缝宽度在0.5mm以内。
Therefore, the south, especially the coastal areas, is more prone to cracking. Cracking usually occurs at member to member and member to beam joints. The crack width is related to the dry shrinkage value, cold shrinkage value and the transverse length of the member. The width of most cracks is within 0.5mm.
改善构件的材料性能，主要要达到两个目的：一是降低构件的收缩值，包括干收缩值和冷收缩值，以减少构件的收缩变形；拉伸值。通过这种“一增一减”，尽可能达到构件收缩变形和拉伸变形的平衡。然而，目前GRC构件的特性使其难以平衡拉伸和收缩值。
To improve the material properties of components, two objectives should be achieved: one is to reduce the shrinkage value of components, including dry shrinkage value and cold shrinkage value, so as to reduce the shrinkage deformation of components; Stretch value. Through this "one increase and one decrease", the balance between shrinkage deformation and tensile deformation of members can be achieved as far as possible. However, the current characteristics of GRC members make it difficult to balance the tensile and shrinkage values.
做一篇关于GRC构件安装结构的文章，目前的主要攻击方向一般放在构件和接缝材料的接缝处理上。在构件本身质量合格的前提下，构件的接合处始终是薄弱环节，此处容易出现裂纹。简单的“粘贴”，即使是用玻璃纤维布加固部件的接缝，也很难防止出现裂缝。
In an article on GRC component installation structure, the current main attack direction is generally on the joint treatment of components and joint materials. On the premise that the quality of the component itself is qualified, the joint of the component is always a weak link, where cracks are prone to occur. Simple "sticking", even if the joints of components are reinforced with glass fiber cloth, it is difficult to prevent cracks.
构件肯定会缩水，用力拉也很难拉。结果，由于没有收缩变形和拉伸变形之间的平衡，因此经常出现构件开裂或构件接头开裂的情况。更重要的是，在安装构件时，需要上下和来回交错以对齐。很难使砂浆充满。大部分安装后填入砂浆，不易保证附着力。
The components will surely shrink and it is difficult to pull with force. As a result, because the balance between shrinkage deformation and tensile deformation is not solved, member cracking or member joint cracking often occurs. More importantly, when installing components, they need to be staggered up and down and back and forth to align. It is difficult to fill the mortar. Most of them are filled with mortar after installation, so it is difficult to ensure the adhesion.
GRC构件采用弹性砂浆增加拉伸变形值。就防止构件接头开裂而言，思路和方法是正确的。但在实践中却存在一个难以的矛盾，即弹性砂浆的高弹性与构件饰面材料的低弹性之间的矛盾。构件饰面材料（如腻子）的伸长率远小于弹性砂浆，构件表面仍会开裂。为此目的，要求饰面材料达到相同的高提拉率在成本方面是不现实的。
GRC members use elastic mortar to increase the tensile deformation value. In terms of preventing cracking of component joints, the idea and method are correct. But in practice, there is a contradiction that is difficult to solve, that is, the contradiction between the high elasticity of elastic mortar and the low elasticity of component facing materials. The elongation of component finishing materials (such as putty) is far less than that of elastic mortar, and the component surface will still crack. For this purpose, it is unrealistic in terms of cost to require the finishing materials to achieve the same high lifting rate.
综合以上分析，
济南GRC构件目前很难不开裂。即使GRC构件不开裂，单组份饰面材料（如腻子）的变形率也不如GRC高，墙体表面仍有裂纹，这在普罗旺斯的外墙中更为明显。有些裂缝实际上只是饰面材料中的裂缝。由于墙面的浅色油漆，马上就会出现一点点开裂。
Based on the above analysis, it is difficult for Jinan GRC members not to crack at present. Even if GRC members do not crack, the deformation rate of single component finishing materials (such as putty) is not as high as GRC, and there are still cracks on the wall surface, which is more obvious in the exterior wall of Provence. Some cracks are actually just cracks in the finishing material. Due to the light color paint on the wall, there will be a little cracking immediately.
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