C55钢纤维微膨胀混凝土的配制及应用

混凝土中掺入钢纤维阻滞了基体混凝土裂缝的产生和发展,与普通混凝土相比,呈现出较好的防裂性能.GNA膨胀剂具有低掺量、低碱含量、分散性能好等优点,掺有适量GNA的混凝土则具有膨胀率稳定、后期收缩小、强度高等显著性能,钢纤维和膨胀剂同时掺加能较好地满足现代建筑防裂、防水等耐久性要求.结合工程实例,对高强度等级混凝土掺钢纤维和膨胀剂在实际配制和应用中进行了总结.

Preparation and Application of C55 Steel Fiber Expansion Concrete

Adding steel fiber to concrete block matrix prevents the emergence and development of concrete cracks. Com- pared with ordinary concrete, a better anti-cracking performance is seen. GNA expansion agent boasts the advantages of low dosage, low alkali content, and good dispersion performance. Concrete mixed with proper amount of concrete GNA shows stable inflation rate, smaller late shrinkage, high the intensity, the addition of fiber and expansion agent can make the con- crete well meet the requirement of modern building crack, waterproof durability. Combined with engineering example, the hizh zrade concrete mixin~ fiber and expansive a~ent in the preparation and application was summarized.