Abstract
Research is reported that optimized the combined use of two different fiber types in cementitious matrixes. The two fiber types were a high modulus polyethylene fiber and a fibrillated polyethylene pulp. The details of the study are described, and it is noted that in the case of impact resistance, the positive effect of each fiber was pronounced in the presence of the other fiber type. For flexural strength and toughness, the combined use of polyethylene fiber and pulp produced desirable results as long as the amounts incorporated were below certain limits. The negative effects of fibers on compressive strength were less pronounced when the two fiber types were used in combination. The interactions between polyethylene fiber and pulp in deciding the specific gravity, volume of permeable pores, and water absorption capacity of cementitious materials were either negligible or only moderately significant.
Published Version
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