GRC構件在制作、存放、運輸和吊裝環(huán)節(jié)中會出現裂縫，影響構件承載力、耐久性、抗?jié)B性和美觀。下面來講講濟南GRC構件貫通性裂縫是怎么回事。

The GRC components will have cracks in the process of production, storage, transportation and hoisting, which will affect the bearing capacity, durability, impermeability and beauty of the components. Now let's talk about the penetrating cracks of Jinan GRC members.

貫通性裂縫是貫通GRC斷面的裂縫，主要原因是GRC構件與安裝節(jié)點的設計。導致貫通性裂縫的具體問題包括：

The through cracks are the cracks that run through the GRC section, mainly because of the design of GRC components and installation nodes. Specific problems causing through cracks include:

（1）剛性約束GRC為薄壁型構件，容易干透濕透，干濕變形率較大。如果因構件造型、錨桿系統(tǒng)超靜定布置、安裝節(jié)點全部鎖緊未設置活動節(jié)點等形成對GRC板的剛性約束，在干濕變形應力的作用下就會產生裂縫。剛性約束是貫通性裂縫.主要的原因。

(1) The rigid constrained GRC is a thin-walled member, which is easy to dry and wet, and has a large dry and wet deformation rate. If the rigid constraint on GRC plate is formed due to the component shape, the statically indeterminate arrangement of the anchor system, the locking of all the installation nodes and the absence of movable nodes, cracks will occur under the effect of dry and wet deformation stresses. Rigid restraint is the main cause of through cracks.

（2）厚度不夠GRC構件斷面厚度不滿足設計要求，或厚度不均、局部過薄。

(2) The thickness of GRC member section is not enough to meet the design requirements, or the thickness is uneven and local is too thin.

（3）玻纖含量低導致抗彎強度低。

(3) Low glass fiber content leads to low bending strength.

（4）未使用耐堿玻纖抗彎強度隨時間衰減過大。

(4) The bending strength of unused alkali resistant glass fiber attenuates too much with time.

（5）背附鋼龍骨剛度不足GRC墻板的背附鋼龍骨平面內慣性矩過小，剛度不足，龍骨變形大導致GRC板裂縫。

(5) The rigidity of the back attached steel keel is insufficient. The inertia moment in the plane of the back attached steel keel of the GRC wallboard is too small, the rigidity is insufficient, and the deformation of the keel is large, causing cracks in the GRC board.

（6）未做臨時拉結異形構件、敞口構件沒有設置臨時拉桿，吊運環(huán)節(jié)導致裂縫。

(6) No temporary tie is made for special-shaped members and no temporary tie rod is set for open members, which leads to cracks in the lifting link.

（7）預埋件銹蝕金屬預埋件因保護層過薄或防銹措施不力，銹蝕后膨脹，導致混凝土表面開裂。

(7) Rust of embedded parts Due to the thin protective layer or ineffective rust prevention measures, the embedded parts expand after corrosion, resulting in cracks on the concrete surface.

GRC構件是薄壁構件，裝飾表層一般不含玻璃纖維，抗拉強度低，雖然有利于降低干濕變形的作用，對抵御荷載作用下的裂縫沒有幫助。您使用前后要注意事項，您可以來我們網站http://www.nyqaac.com進行咨詢！

GRC members are thin-walled members, and the decorative surface generally does not contain glass fiber, with low tensile strength. Although it is conducive to reducing the role of dry and wet deformation, it is not helpful to resist cracks under load. Precautions before and after use, you can come to our website http://www.nyqaac.com Consult!