Seite - 1513 - in Book of Full Papers - Symposium Hydro Engineering

6. CONCLUSION There are some conclusions in the following: • RCC mix design is comprised of four main components: aggregate, cementitious materials (pozzolan and cement), water and admixture. The quality of each components effect on the RCC quality • For RCC dams, the batching plant and mixing operations have an important impact on the in-place properties of the RCC. When the batching plant is operating, the amount of all constituent materials shall be controlled. • During construction, all of QC tests should be performed according technical specification in specified frequency. • For RCC dams, important factors shall be considered for placement of the RCC include Transportation; RCC placement temperature; Segregation; Timing; Lift joint conditions and Bedding mortar. • During construction of the RCC adequate compaction will have one of the most profound impacts on the quality of the finished RCC dam. • After compaction of RCC lift, curing activates shall be done according to air condition and weather temperature in summer or winter. 7. REFERENCES [1] International Committee on Large Dams, the Specification and Quality Control of Concrete for Dams," ICOLD Bulletin, Paris, France, 2006. [2] Keith A Ferguson, P.E. et al. "Application of Quality concepts to Roller Compacted Concrete Dams and mix designs," National ASDSO Conference, Pittsburg, 1997 [3] U.S. Army Corps of Engineers, "Roller Compacted Concrete," Engineer Manual EM 1110-2-2006. [4] American Concrete Institute, "Roller Compacted Concrete," Report 207.5R-89, Detroit, Michigan, 1988. [5] American Society of Civil Engineers, "Quality in the Constructed Project - Manual of Professional Practice (A Guide for Owners, Designers and Constructors)," New York, 1988. SUMMARY The purpose of RCC quality control is to maintain uniformity of all constituents and operations entering into the final product. Thus, quality assurance and quality control (QA/QC) systems for RCC dams need to be 1513