Strength characteristics of mortars containing dispersed fibrous reinforcement
Weidler, Jay Benoir
Smith, R. B. L.
Master of Science
The purpose of this investigation was to gather and interpret data concerning the effect of adding fibrous reinforcement to mortar during the mixing phase. The fibers used in the investigation may be generally., described as short, steel wire segments, having length to diameter ratios from forty to one-hundred and sixty, and possessing either good or poor adhesion with the matrix. The composite material was subjected to both direct and indirect tension, unconfined compression, and flexure. Increases in strength were noted for the composite material over the plain mortar in all cases but a few of the compression tests. The maximum gain in strength was slightly over one-hundred percent found for a six percent inclusion of one-inch galvanized fibers under an indirect tensile load. The results of the tension tests indicated that the increase in tensile strength is directly proportional to the percentage of fibrous material in the mix. The slope of this line is a function of the type and length of fiber, the state of stress in the matrix, and the induced orientation of the fibers.