Effect of steel fiber on engineering performance of high-strength concrete
Abstract
This research investigated significant effects of steel fiber on engineering properties of high-strength concrete. The mix proportions were designed relied on the Densified Mixture Design Algorithm (DMDA) method in which fly ash (FA) had filler and pozzolanic effects. The water-to-binder ratio (w/b) was kept at 0.27 to achieve high strength while the superplasticizer was added to ensure the workability of high-strength concrete. Slump, compressive strength, ultrasonic pulse velocity (UPV) and electrical surface resistivity (ESR) tests were examined. All of the steel fiber concrete specimens performed exceptional engineering properties. The greatest compressive strength obtained in this study was 74.9 MPa when steel fiber accounted for 5% by weight of fine aggregate. The amount of steel fiber was proportional to strength, UPV but inversely related with workability and ESR of the high-strength concrete.
Moraref