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構件的廢品率及開裂原因和方法。GRC構件成型成熟后，將泡沫顆粒填充在一定的模具中，用蒸汽加熱，可以熔化成固定的形狀。它具有韌性好、質輕、熔化致密的特點，封閉的泡孔不吸水。加工成型條件或操作不當，會導致收縮、表面不平整、脫模困難、產品脆性、廢品率高等一些不良現象。蒸汽、冷卻水、壓縮空氣的供應條件是保證產品脫模好、粘接好、表面美觀、縮短成型周期的基礎，所以需要更穩定。
              

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.

導致GRC羅馬柱構件開裂的因素很多，但主要原因是構件的收縮變形。在收縮過程中，構件會產生收縮應力，從而引起構件和接頭材料的拉伸變形。當拉伸變形不足以抵消收縮變形時，就會產生裂紋。開裂程度因地區而異。南方尤其是沿海地區氣候潮濕，一年中大部分時間空氣相對濕度在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 構件的廢品率及開裂的原因和方法，在這種高溫潮濕的氣候環境下，GRC構件的含水量始終很高，如果不采取特殊的干燥措施，構件在自然狀態下的含水量不能低于《標準》中規定的10%。裂縫通常發生在構件與梁之間的接縫處，裂縫的寬度與構件的干縮值、冷縮值和橫向長度有關，大多數裂縫在0.5 mm以內。

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.

關于GRC構件的成品率和開裂的原因，GRC構件隱蔽驗收后，將頂部蓋板與曲面部分的鋼絲板連接，蓋板上部與角鋼預留的螺孔用螺栓連接，保證GRC建筑的整體穩固性，保證產品的效果。

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.