After the GRC component is formed, it can fill the foam particles onto the mold. It has good toughness, light weight and fine density. The finished product rate is very high, but it is easy to crack when it is used. Do you know the yield and split of GRC components? What are the installation points? How much do you know about it? Let's take a look.

GRC构件的废品率及开裂原因和方法。GRC构件成型成熟后，将泡沫颗粒填充在一定的模具中，用蒸汽加热，可以熔化成固定的形状。它具有韧性好、质轻、熔化致密的特点，封闭的泡孔不吸水。加工成型条件或操作不当，会导致收缩、表面不平整、脱模困难、产品脆性、废品率高等一些不良现象。蒸汽、冷却水、压缩空气的供应条件是保证产品脱模好、粘接好、表面美观、缩短成型周期的基础，所以需要更稳定。
              

The rejection rate of GRC components and the causes of cracking and solutions. After the GRC member is molded and matured, the foam particles are filled in a certain mold and heated by steam, which can be melted into a fixed shape. It has the characteristics of good toughness, light weight and dense melting, and the closed cell does not absorb water. Improper processing conditions or operation will lead to shrinkage, uneven surface, difficult demoulding, product brittleness, high scrap rate and other adverse phenomena. The supply conditions of steam, cooling water and compressed air are the basis to ensure good demoulding, good adhesion, beautiful surface and short molding cycle, so it needs to be more stable.

导致GRC罗马柱构件开裂的因素很多，但主要原因是构件的收缩变形。在收缩过程中，构件会产生收缩应力，从而引起构件和接头材料的拉伸变形。当拉伸变形不足以抵消收缩变形时，就会产生裂纹。开裂程度因地区而异。南方尤其是沿海地区气候潮湿，一年中大部分时间空气相对湿度在90%左右。

There are many factors leading to the cracking of GRC Roman column members, but the main reason is the shrinkage deformation of the members. In the process of shrinkage, the component will produce shrinkage stress, which will cause tensile deformation of component and joint materials. When the tensile deformation is not enough to offset the shrinkage deformation, cracks will occur. The degree of cracking varies from region to region. In the south, especially in the coastal areas, the climate is humid, and the relative humidity of the air is about 90% for most of the year.

GRC 构件的废品率及开裂的原因和方法，在这种高温潮湿的气候环境下，GRC构件的含水量始终很高，如果不采取特殊的干燥措施，构件在自然状态下的含水量不能低于《标准》中规定的10%。裂缝通常发生在构件与梁之间的接缝处，裂缝的宽度与构件的干缩值、冷缩值和横向长度有关，大多数裂缝在0.5 mm以内。

The waste rate of GRC components and the causes of cracking and the solutions. In this high temperature and humid climate environment, the moisture content of GRC components is always very high. If special drying measures are not taken, the moisture content of GRC components in natural state can not be lower than 10% specified in the standard. The width of cracks is related to the dry shrinkage value, cold shrinkage value and transverse length of the component. Most of the cracks are less than 0.5 mm.

关于GRC构件的成品率和开裂的原因，GRC构件隐蔽验收后，将顶部盖板与曲面部分的钢丝板连接，盖板上部与角钢预留的螺孔用螺栓连接，保证GRC建筑的整体稳固性，保证产品的效果。

As for the finished product rate and cracking reasons of GRC components, after the concealed acceptance of GRC components, the top cover plate is connected with the steel plate of curved surface, and the upper cover plate is connected with the reserved screw hole of angle steel with bolts, so as to ensure the overall stability of GRC building and the effect of products.