... fiber is used to instead of steel fibre for reinforcement to cement concrete. Compared with steel fibre, ... per sqm (volume ratio is 0.3%), reinforcement adding amount is 5.5kg, Compared with ... volume ratio to the concrete.2. Length50mm for common crack-resistant requirement. 3. Matching RatioUsually ... no special requirement, may along the vibrating time for 30s, The maintenance of the fibre concrete ...