Restrained Shrinkage Tests with PP-Fiber Reinforced Concrete


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Title: Restrained Shrinkage Tests with PP-Fiber Reinforced Concrete

Author(s): Herbert Krenchel and Surendra P. Shah

Publication: Special Publication

Volume: 105


Appears on pages(s): 141-158

Keywords: cracking (fracturing); crack width and spacing; drying shrinkage; fiber reinforced concretes; mortars (material); polypropylene fibers; shrinkage; tests; Materials Research

Date: 12/1/1987

Restrained shrinkage tests were carried out on ring specimens of concrete reinforced with polypropylene fibers. These fibers had a relatively improved modulus of elasticity and enhanced bond with portland cement matrix. To achieve uniform dispersion for the relatively high fiber content (2 percent volume fraction) employed, a conventional pan mixer was attached with a high-speed activator. It was observed that even after severe drying, no visible cracks (cracks wider than 0.01 mm) appeared on the polypropylene fiber reinforced specimen.