The amount of iron (reinforcement steel) required per square foot (sqft) varies based on structural design, load-bearing needs, and local codes. For typical residential slabs, 0.15–0.25 kg/sqft is common, while heavy-duty industrial floors may require 0.4–0.6 kg/sqft. Engineers calculate precise values using project-specific blueprints.
A modern sand-making line integrates crushing, screening, and shaping to produce high-quality aggregates. Key equipment includes:
1. Jaw Crusher: Primary crushing (e.g., feed size: ≤1200mm, output: 50–300 TPH).
2. Cone Crusher: Secondary crushing (e.g., capacity: 100–500 TPH).
3. Vertical Shaft Impact Crusher (VSI): Sand shaping (e.g., output fineness: 0–5mm).
| Parameter | Coarse Aggregate | Fine Aggregate |
|———–|——————|—————-|
| Size Range | 5–40mm | 0–5mm |
| Shape Index | ≤15% | ≤25% |
| Clay Content | ≤1% | ≤3% |
Q: How to reduce VSI wear?
A: Use tungsten carbide tips and maintain feed size below 50mm.
Q: Ideal moisture content for sand?A: Below 5% to prevent clogging in screens.
A highway project in Texas used a 500 TPH line with jaw + cone + VSI configuration, achieving ASTM C33-compliant aggregates for concrete mixing.
