Concrete fiber has different characteristics and requirements under different conditions. While studying the characteristics of concrete fiber, it is necessary to consider the requirements of commercial fiber.
1. High alkali resistance, concrete fiber in the use process must have enough alkali resistance.
2. It is safe and harmless. The fiber added in the concrete fiber must be harmless to human body, and the fiber safety must meet the requirements of "safe, non-toxic and harmless".
3. Self dispersibility: the fiber used in concrete fiber must have good dispersibility in cement, without agglomerating and bunching.
4 .scale production, the fiber added in the concrete fiber of construction engineering must be highly commercialized products, that is to say, the output of fiber must meet the large production scale, and can strictly carry out
the commodity circulation channel into the specific project.
5. has high tensile strength.
6. Large deformation capacity.
7.High bond strength.
8.Concrete fiber should have a certain length, not too thick.
9.The higher the ratio of elastic modulus of fiber to cement matrix, the greater the stress shared by the fiber under load, and the more obvious the effect of fiber.
10.The price is reasonable, different fibers have different density, different thickness, different function, different content, different fiber may show different mixing efficiency in cement matrix.
