Results of Laboratory Tests on Materials for Thin Repair of Concrete Surfaces

摘要

The study reported herein was Phase I of a cooperative investigation between theU.S. Army Engineer Waterways Experiment Station (WES) and the U.S. Bureau of Reclamation (USBR). The overall objective of the investigation was to identify materials appropriate for thin repair of concrete surfaces, conduct laboratory tests to determine pertinent material properties, and evaluate the Performance of selected materials in field applications. Eleven candidate repair materials were selected based on a review of test data, discussions with manufacturers and contractors, and examination of information that was already available at the laboratories. Each material was subjected to a suite of laboratory tests to determine pertinent material properties with results as described herein. Based on the results of these tests, selected materials have been installed at various exposure sites to evaluate their performance in field applications. The Phase II field tests represent a wide variety of environmental conditions including high and low temperature, high and low relative humidity, and cycles of freezing and thawing. Material performance will be monitored for an extended period of time.