GRC构件在制作、存放、运输和吊装环节中会出现裂缝，影响构件承载力、耐久性、抗渗性和美观。下面来讲讲济南GRC构件贯通性裂缝是怎么回事。

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.

贯通性裂缝是贯通GRC断面的裂缝，主要原因是GRC构件与安装节点的设计。导致贯通性裂缝的具体问题包括：

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）刚性约束GRC为薄壁型构件，容易干透湿透，干湿变形率较大。如果因构件造型、锚杆系统超静定布置、安装节点全部锁紧未设置活动节点等形成对GRC板的刚性约束，在干湿变形应力的作用下就会产生裂缝。刚性约束是贯通性裂缝.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）厚度不够GRC构件断面厚度不满足设计要求，或厚度不均、局部过薄。

(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）玻纤含量低导致抗弯强度低。

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

（4）未使用耐碱玻纤抗弯强度随时间衰减过大。

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

（5）背附钢龙骨刚度不足GRC墙板的背附钢龙骨平面内惯性矩过小，刚度不足，龙骨变形大导致GRC板裂缝。

(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）未做临时拉结异形构件、敞口构件没有设置临时拉杆，吊运环节导致裂缝。

(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）预埋件锈蚀金属预埋件因保护层过薄或防锈措施不力，锈蚀后膨胀，导致混凝土表面开裂。

(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构件是薄壁构件，装饰表层一般不含玻璃纤维，抗拉强度低，虽然有利于降低干湿变形的作用，对抵御荷载作用下的裂缝没有帮助。您使用前后要注意事项，您可以来我们网站http://www.aswjc.com进行咨询！

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.aswjc.com Consult!