Properties of Grout Enriched Roller Compacted Concrete

Grout enriched roller compacted concrete (GERCC) has gained acceptance for constructing vertical and sloped facings for RCC dams, abutment contacts, interior encasements, and other features that previously used conventional concrete. Compared to the concurrent production and placement of conventional concrete for these applications, GERCC provides an economical and less intrusive process resulting in minimal impact to RCC production operations. An investigation was done to evaluate the properties and performance characteristics of various factors of GERCC. Various properties of grout and methods of mixing were investigated including materials and mixing methods for grout and RCC, grout dosages, grout locations, and compaction variations were examined. This paper summarizes the GERCC field evaluations, reports the significant results, and provides conclusions and recommendations for GERCC use. 8 pp., 4 references.