| Title |
Long-Term Characteristics on Flexural Performance of Steel Fiber Reinforced Concrete Continuous Slab |
| Authors |
Hong, Geon-Ho ; Jung, Seong-Won |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.10.163 |
| Keywords |
long term deflecion; steel fiber reinforced concrete; crack; continuous slab; drying shrinkage |
| Abstract |
In spite of various advantages, steel fiber reinforced concrete is still limited in its use due to the insufficient research results on the
structural performance and design criteria. This study evaluated the long-term behavior of the steel fiber reinforced concrete slabs by
long-term loading experiments based on the short-term load bearing capacity of steel fiber reinforced concrete slabs obtained from previous
studies. In this study, long-term loading experiments were carried out on Total four 2-span continuous slab specimens were tested for
examining the long-term behavior of steel fiber reinforced concrete members. Long-term behavior characteristics of members were evaluated
by measuring the long-term deflection, drying shrinkage, the number and width of cracks. Experimental results showed that the instant
deflection of the steel fiber reinforced concrete slab is about 50% of the normal reinforced concrete slab. And, it was analyzed that the
long-term deflection of the specimen using steel fiber reinforced concrete was about 10~20% lower than that of normal concrete by the
long-term deflection over 100 days. In addition, the slab specimen using steel fiber reinforced concrete was evaluated to have just 70% of
the number and width of cracks compared with normal concrete specimens. |