PCC is laid in layers with a thickness of 4 Inch of (1:4:8) under the raft using OP Cement and Local Sand with the use of mechanical vibrators for complete compaction. Hand compaction may be necessary in certain areas to ensure complete compaction and proper alignment within the mold. Compaction should be completed within thirty minutes of water addition to prevent premature setting.
Mixing of Plain Cement Concrete
Mixing of PCC can be done either manually or by the means of machines :
Hand Mixing
Suitable for small-scale projects, hand mixing requires a clean, waterproof surface. Sand and cement are mixed thoroughly before adding coarse aggregate and water to ensure even color and consistency.
Machine Mixing
Dry coarse aggregate, fine aggregate, and cement are placed in respective hoppers. After initial mixing, water is gradually added to achieve the specific water-cement ratio, ensuring a uniform mix.