Title:
Preparation of Highly Reinforced Steel Fiber Reinforced Concrete Composites
Author(s):
David R. Lankard and Jeffrey K. Newell
Publication:
Symposium Paper
Volume:
81
Issue:
Appears on pages(s):
287-306
Keywords:
compressive streng th; concrete pavements
forced concretes; flexu ral st ren
impact strength; metal
gth; high strength
fibers .; refractory concretes
C -
fiber re - oncretes;
resurfac
in-ing.
DOI:
10.14359/6456
Date:
11/1/1984
Abstract:
Steel fiber reinforced concretes (SFRC) are typically prepared by adding the fiber along with the other concrete ingredients in the mixing operation. Using this "premix" approach, it is possible to incorporate up to about 265 lb/yd3 (2 volume percent) of fiber into the concrete. At fiber contents in excess of 2 volume percent, the SFRC becomes difficult or impossible to mix and place. Inasmuch as the improvements in concrete properties attributed to the fibers increase as a function of increasing fiber content, this situation places a limit on the ultimate property development in SFRC prepared using the premix approach. Recently, a procedure has been developed wherein steel fiber contents up to 18 volume percent have been provided in SFRC composites. The engineering properties of these highly reinforced composites are discussed along with a number of successful applications.