Seite - 1508 - in Book of Full Papers - Symposium Hydro Engineering

time of the test paste shall not be 60 min shorter or 90 min longer than that of the check paste made using distilled water according to ASTM C191. 3. BATCHING PLANT AND MIXING OPERATION [1, 2] For RCC dams, the batching plant and mixing operations have an important impact on the in-place properties of the RCC. Table 3 shows quality control activates for batching plant and mixing operations. When the batching plant is operating, the amount of all constituent materials including cement, and each size group of aggregate, water and admixtures shall be continuously controlled. A daily (24 hour basis) report shall be prepared indicating the type, source, and quantity (actual and SSD basis) of cement, each size group of aggregate, admixture, and water used during each shift of plant operation, based on plant production records. The report shall show the required mix proportions per cubic meter for each mix design, and the average proportions for each mix calculated from the totals used during each shift. Table 3 Quality Control activates for batching plant and mixing operations 4. QUALITY CONTROL PLAN DURING CONSTRUCTION [1, 4, 5] 4.1. QUALITY CONTROL TESTS DURING CONSTRUCTION During construction, all of QC tests should be performed according technical specification in specified frequency. Table 4 shows typical quality control tests for RCC dams. 1508