Title:
Concrete Repair Material Performance—Laboratory Study
Author(s):
Randall W. Poston, Keith Kesner, James E. McDonald, Alexander M. Vaysburd, and Peter H. Emmons
Publication:
Materials Journal
Volume:
98
Issue:
2
Appears on pages(s):
137-147
Keywords:
creep; modulus of elasticity; repair; shrinkage; strength
DOI:
10.14359/10197
Date:
3/1/2001
Abstract:
This paper presents the laboratory results of an overall investigation to develop performance criteria for cement-based repair materials. Performance characteristics for dimensionally compatible repair materials based on a review of the literature provided the starting point for the laboratory study. Twelve candidate repair materials were selected for the experimental portion of the project. Each material was subjected to a series of standard and nonstandard laboratory tests to determine which properties were perceived to be of interest in a repair context and to provide some basic information about their behavior. These tests included: a) unrestrained and restrained drying shrinkage; b) modulus of elasticity; c) tensile and compressive creep; d) coefficient of thermal expansion; and e) flexural, compressive, and direct tensile strength. The results of the laboratory investigation provided a basis for the development of performance criteria for cement-based materials that should lead to durable concrete repairs.