Concrete quality control - field note 034

At the Chennai Port Expansion, our concrete QC team implemented an inline mix‑design verification system that caught a 5% deviation in aggregate grading before batching.

• Use portable gradation test kit on site; - Cross‑check slump with real‑time sensor; - Sample 5% of pours for lab testing; - Adjust mix ratios in real time.

Resulted in a 1.8 MPa increase in compressive strength and reduced rework costs by 12%.