Micro-Reinforced Cementitious Composites for Thin Repairs

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Title: Micro-Reinforced Cementitious Composites for Thin Repairs

Author(s): Nemkumar Banthia and Sylvie Dubeau

Publication: Special Publication

Volume: 128

Issue:

Appears on pages(s): 307-322

Keywords: bending; carbon; cement pastes; composite materials; metal fibers; mortars (material); repairs; tension tests; Materials Research

Date: 11/1/1991

Abstract:
With the objective of examining the possible use of microreinforced cementitious materials for thin repairs, tensile bond between old concrete and microreinforced cement composites was evaluated. Cement pastes and mortars were reinforced with microfibers of carbon and steel with fiber weight fractions of up to 5 percent. Uniaxial tensile tests were conducted to determine the strength of the tensile bond between an old concrete and the repair composite. Improvements in the tensile bond strength were noticed due to fiber inclusion. In some cases, however, poor composite workability led to inadequate compaction and the tensile bond strength was adversely affected.