對GRC構件強度的影響因素有哪些?
What are the factors influencing the strength of GRC members?
1.攪動時間：攪動時間的長度應根據溫度、水灰比及結構要求及時調整。一定下來，就嚴格遵守，不能憑感覺。攪拌量的大小直接影響 GRC構件的強度。加和不加減水劑的攪拌時間有很大差異。加了減水劑，攪拌時間大大縮短。
1. Stirring time: the length of stirring time should be adjusted in time according to the temperature, water cement ratio and structural requirements. We should strictly abide by it when we are sure of it. We can't rely on our feelings. The amount of mixing directly affects the strength of GRC members. The mixing time with and without superplasticizer is very different. The mixing time is greatly shortened by adding water reducing agent.
2.纖維含量：玻璃纖維是 GRC的主要增強材料。根據工業標準，玻璃纖維含量達到4-5%，即為合格 GRC。但實際上很難達到這個數量。一是不用那么多，3%-4%就足夠了;二是產品表面一般不需要添加纖維。但是，若用玻璃鋼網代替玻璃鋼絲，則會出現嚴重的纖維含量不足，嚴重影響制品的強度。
2. Fiber content: glass fiber is the main reinforcing material of GRC. According to the industry standard, GRC is qualified when the glass fiber content reaches 4-5%. But it's really hard to reach that number. First, not so much, 3% - 4% is enough; Second, the product surface does not need to add fibers. However, if glass fiber reinforced plastic mesh is used instead of glass steel wire, the fiber content will be seriously insufficient, which will seriously affect the strength of products.
3.附加成分：附加成分看似簡單，但卻關重要。摻合料的數量和品種對產品質量有重要影響。尤其是硅酸鹽水泥產品，加入膠漿，一方面提高了產品的強韌度，另一方面使產品具有防水、耐鹽耐酸性。(主要添加劑：減水劑，粉煤灰，硅灰，火山灰，緩凝劑，促進劑，丙烯酸乳液，纖維素等);聚羧酸系減水劑具有弱酸性，能降低水泥堿度，從而減少水泥對玻璃纖維的腐蝕。
3. Additional ingredients: the additional ingredients seem simple, but they are very important. The quantity and variety of admixtures have an important influence on the product quality. Especially for Portland cement products, the addition of mortar improves the strength and toughness of the products on the one hand, and makes the products waterproof, salt resistant and acid resistant on the other hand（ Main additives: water reducer, fly ash, silica fume, volcano ash, retarder, accelerator, acrylic emulsion, cellulose, etc.) Polycarboxylate superplasticizer has weak acidity, which can reduce the alkalinity of cement and reduce the corrosion of cement to glass fiber.
4.砂：砂的含泥量對水泥成分的強度影響很大。高強 GRC構件對砂漿含泥量的要求不超過0.3%
4. Sand: the mud content of sand has a great influence on the strength of cement composition. The requirement of high strength GRC component for mortar mud content is not more than 0.3%
5.采用高壓注射成型工藝，確保產品質量，其氣壓應穩定。
5. High pressure injection molding process is adopted to ensure the product quality, and the air pressure should be stable.
All the factors that affect the strength of GRC components are introduced here. GRC component manufacturers have made a detailed summary for you. I believe you will have a new understanding after reading it. If you want to know more, you can pay attention to our website: Shandong GRC component http://www.libpo.com.cn Hope to help you.
