| Title |
Evaluation of Flexural Stiffness Considering Flexural Tensile Strength of Steel Fiber Reinforced Concrete |
| Authors |
Hong, Geon-Ho ; Jung, Seong-Won |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.8.131 |
| Keywords |
Steel fiber reinforced concrete; Flexural tensile strength; Compressive strength; Flexural stiffness |
| Abstract |
Since concrete has a low tensile strength compared to the compressive strength, reinforced concrete flexural members represent easy crack
occurance under a small load. In order to overcome this problem, steel fiber reinforced concrete has been developed to compensate the
tensile strength and brittleness of members. However, in the design formula of the domestic building code, it is not specified in the design
formula reflecting the material characteristics. Therefore, the field application of the steel fiber reinforced concrete have had many restrictions.
In this study, a flexural tensile strength model of steel fiber reinforced concrete is proposed by collecting and analyzing the material
properties of material test results conducted by various researchers, and verified by the test results of cracking and stiffness evaluation of
flexural members based on the proposed model. As a result of this study, the flexural tensile strength model of steel fiber reinforced concrete
which can reflect the mixing ratio and aspect ratio of the steel fiber was proposed and the validity of the proposed material model equation
was evaluated from the load-deflection relationship in the flexural test of the slab member. |