Title:
Fresh, Mechanical, and Durability Properties of Steel Fiber-Reinforced Rubber Self-Compacting Concrete (SRSCC)
Author(s):
Jiaqing Wang
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/25/2020
Abstract:
In this research, the fresh and mechanical properties and freeze-thaw durability of steel fiber-reinforced self-compacting concrete (SCC) incorporated with recycled rubber aggregates were evaluated. Recycled tire rubber aggregates, with mesh sizes from #10 to #18 partially replaced the fine aggregates with three volume percentages 10%, 15%, and 25%. Normal SCC, SCC with replaced rubber aggregates, and SCC with rubber aggregates and steel fibers were prepared. The fresh property results showed that the workability can be impacted by the added steel fibers and rubber aggregates. However, the steel fiber-reinforced rubber SCC can still meet most of the recommended criteria when the rubber content is smaller than 25%. The compressive strength was reduced in steel fiber-reinforced rubber SCC when compared with the control SCC. Nevertheless, steel fiber-reinforced rubber SCC samples have higher splitting tensile strength. The flexural test data showed improved strength and largely increased post-peak deformation by comparing with control SCC. The freeze-thaw durability test of all samples including the steel fiber-reinforced rubber SCC showed excellent freeze-thaw resistance. The proposed steel fiber-reinforced rubber SCC can maintain required fresh properties while improving fracture performance and freeze-thaw durability for potential construction.