Investigation of roller-compacted concrete for use in pavements in Virginia.

PDFTech Reporthttp://www.virginiadot.org/vtrc/main/online_reports/pdf/17-r10.pdfFHWA/VTRC 17-R10102892Roller compacted concreteConcrete pavementsVirginiaVirginia Transportation Research CouncilHossain, M. ShabbirOzyildirim, H. CelikVirginia Transportation Research CouncilVirginia. Dept. of TransportationUnited States. Federal Highway AdministrationUS Transportation CollectionRoller-compacted concrete (RCC) is a stiff mixture of aggregate, cementitious materials, and water with zero slump. RCCis consolidated or compacted in the fresh state by use of a roller with or without vibration. RCC typically is placed with asphaltpaving equipment in thicknesses of 4 to 8 in for pavement application. RCC has gained the attention of the paving industry inrecent years because of its history of low cost, rapid construction, and durable performance. The Virginia TransportationResearch Council conducted this laboratory study to gain familiarity with RCC technology and to develop guidelines for its usein the field.RCC mixtures were successfully produced in the laboratory using locally available materials, and their properties weremeasured. These mixtures achieved compressive strengths around 5,000 psi in 28 days and had properties similar to those ofconventional concrete in terms of compressive strength, modulus of elasticity, modulus of rupture, and splitting tensile strength.A special provision was developed and used in the two field projects. The special provision was subsequently modified based onthe field experience and is provided in the Appendix.VDOT should implement the RCC specification developed in this study for regular VDOT use of RCC. Use of RCCshould be considered in future field applications, particularly where fast construction of rigid (concrete) pavement is needed; anexample of such an area would carry heavily loaded, slow-moving vehicles such as at intersections and access roads to truck orbus parking areas. VDOT should annually monitor the long-term performance of the two constructed RCC projects reviewed inthis study over a period of at least 10 years. Evaluations should document joint efficiencies for load transfer (through testing withthe falling weight deflectometer), any visual evidence of deterioration of asphalt at joints, and any other general signs ofpavement distress that may occur