Partially Steel-Fiber Reinforced Mortar

by Mohsen Mahmoudzadeh Rahimi, (M.ASCE), Asst. Prof. of Civ. Engrg.; Univ. of Azarabadehan, Tabriz, Iran,
Clyde E. Kesler, (F.ASCE), Prof. of Civ. Engrg. and Theoretical and Applied Mechanics; Univ. of Illinois at Urbana-Champaign, Urbana, Ill.,

Serial Information: Journal of the Structural Division, 1979, Vol. 105, Issue 1, Pg. 101-109

Document Type: Journal Paper


Flexural members that are reinforced by steel fibers for only a portion of their depth, referred to as being partially reinforced, can have strengths and ductilities equal to those of members reinforced for the full depth and at a considerable saving in costs. Beams 3-in. (76-mm) deep, reinforced with 1.5% by volume of 0.5-in. x 0.0058-in. (12.7-mm x0.15-mm) fibers on only the tension side to a depth of 0.5 in. (12.7 mm) or more have strengths comparable to a fully reinforced member but with slightly reduced ductility. The cost of materials for beams reinforced to one-sixth of their total depth is only about one-half of that for a fully reinforced member.

Subject Headings: Steel fibers | Reinforcing steel | Mortars | Flexural strength | Structural strength | Ductility | Tension members | Fiber reinforced composites

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