Rapid-setting materials are becoming widely available. Transportation agencies have a strong need for materials that will set rapidly yet provide a durable repair especially in urban areas. There are eight categories of rapid-setting concretes, and these possess a wide range of characteristics and properties. A survey of state transportation departments indicated that there are several preferred properties and characteristics of rapid-setting materials. A test program was conducted to evaluate test procedures for these materials and to determine the properties of a range of rapid-setting concretes. The results of this test program are summarized in this paper.

Rapid-setting repair materials have been in wide demand for the repair of portland cement concrete pavements and bridge decks. High traffic volumes in urban areas require materials that wLtl cure rapidly yet provide adequate strength and durability. Many types of repair materials are available: