Management method for implementation of raft foundation casting with large volume: Case study on the cyclone preheater tower foundation of Indarung VI PT Semen Padang

Abstract

Managing the casting of large-volume raft foundations for the Cyclone Preheater Tower Foundation project required a supply of K-300 kg/cm2 ready-mix concrete. The raft foundation dimensions were 39,900 mm * 27,900 mm * 3,000 mm, with a volume of 3,338 m3. The casting had to be completed within six calendar days, a very tight timeframe for such a large volume of concrete. To ensure successful implementation and prevent additional timeframes, coordination between all parties involved in the project is essential at all stages. There are six stages of implementation: 1. Contractor collaboration with the batching plant company, 2. Reporting the results of the contractor-batch plant collaboration to the owner through the supervising consultant, 3. Casting preparation, 4. Concrete treatment before casting, 5. Concrete treatment during casting, 6. Concrete maintenance/curing