アルカリシリカ反応

[V-240] Mechanical properties of short fiber reinforced concrete under ASR environment

*束河 竜平¹、横田 弘² (1. 北海道大学大学院工学院、2. 北海道大学大学院工学研究院)

Keywords:ASR, Short fiber reinforced concrete, Organic fiber, Steel fiber, Expansion rate

There are few studies in which the expansion behavior and mechanical properties of fiber reinforced concrete under the ASR environment.Therefore, in my research,test pieces containing three types of fibers subject to NAOH immersion test, and compare of expansion rate. Furthermore, a bending test conduct to compare mechanical characteristics.As a result, it found that although the incorporation of short fibers has the effect of suppressing the expansion of ASR compared with the non-blended ones, the effect depends on the shape of the fiber surface.