Development of Laboratory Testing Criteria for Evaluating Cementitious, Rapid-Setting Pavement Repair Materials

摘要

Numerous commercial-off-the-shelf products are available for small surface repairs in portland cement concrete (PCC) pavements that provide short set times, high early strengths, and durability to withstand heavy loads. Investigations of pavement repair materials conducted at the U.S. Army Engineer Research and Development Center (ERDC) in Vicksburg, MS, and other test organizations examined cementitious rapid-setting repair materials for repair of PCC pavements through laboratory and field characterization. Standard laboratory tests were performed to characterize the material properties over time and to provide a mechanism for assessing the material suitability for field repairs. Numerous repairs were constructed and evaluated under controlled traffic conditions to determine the ability of the repairs to support aircraft traffic after a mini-mum curing period. A laboratory protocol was developed for selection of cementitious, rapid-setting repair materials based on the laboratory and full-scale test results. This protocol originally developed in 2006, aided airfield managers and repair teams by reducing the potential for selection of materials that were likely to perform poorly. Changes to the protocol were made based on a review of material properties and field performance of materials tested at ERDC and other test agencies to improve the process of selecting materials based on repair type and size.