Self-consolidating concrete : a synthesis of research findings and best practices.

PDFTech ReportCT-2255-F-12-4CT Study No. SPR-2255Self compacting concreteSpecificationsBest practicesPrecast concreteWorkabilityQuality assuranceLiterature reviewsConnecticutConnecticut. Dept. of TransportationHenault, John W.Connecticut. Dept. of Transportation. Division of ResearchUnited States. Federal Highway AdministrationUS Transportation CollectionThe Connecticut Department of Transportation (ConnDOT) currently permits theuse of self-consolidating concrete (SCC) technology on a limited basis forprecast drainage structures, barriers and retaining walls. These include butare not limited to catch basins, manholes, culverts, retaining walls, andbarrier curbs. At this time, ConnDOT does not permit the use of SCC forprestressed concrete applications, such as for bulb-tee girders, box beams anddeck slabs; and does not permit its use for cast-in-place applications.This study was conducted in order to help facilitate the specification of SCCtechnology by the ConnDOT. This included visiting precast plants that produceconcrete products for ConnDOT and observing their practices, conducting aliterature review on SCC, and summarizing a Research Advisory Committee surveyconducted by the Missouri Department of Transportation appropriate to ConnDOTspecifications. Based upon the findings of the study, it is recommended hereinthat ConnDOT\ue2\u20ac\u2122s SCC specification continue to be limited to precast concreteapplications not involving any prestressed elements. Once ConnDOT implements amore rigorous SCC specification and acceptance process involving the use ofmore workability tests, ConnDOT should consider pilot projects forprecast/prestressed bridge elements and cast-in-place concrete construction