IS 2435:1971 is the Indian Standard (BIS) for continuous type concrete mixers - specification. This standard specifies the requirements for the materials, construction, and performance of continuous type concrete mixers. It covers various designated capacities and outlines the testing procedures to ensure the uniformity and quality of the concrete produced.
Specifies requirements for continuous type concrete mixers.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Rated Capacity Sizes | Specifies standard sizes: 12, 18, and 24 m³/h. | Designated by output, e.g., 'C-15', 'C-30', 'C-45', 'C-60' representing 15, 30, 45, 60 m³/h, allowing a wider range. | JIS A 8603:2009 |
| Mixing Trough Plate Thickness | Minimum 5 mm for sides/ends, 6 mm for bottom. | Not specified prescriptively; must be sufficient for durability and structural integrity based on performance requirements. | EN 206 (Performance Principle) |
| Water Dosing Accuracy | Flow meter, if used, must be accurate to ±2% of the indicated quantity. | Equipment for producing conforming concrete must measure water with an accuracy of ±3% of the required quantity. | EN 206:2013+A2:2021 |
| Uniformity Test (Coarse Aggregate) | To be checked by agreed methods (related IS 4925 allows max 10% variation between samples). | Difference in mass of coarse aggregate per m³ of concrete shall not exceed 6% between any two samples. | ASTM C94/C94M-23a |
| Safety Guarding | General requirement: 'All dangerous moving parts...shall be adequately guarded'. | Requires specific safety measures including emergency stops and electrical interlocks on mixer covers. | EN 12151:2007 |
| Mixing Blade Material | Mild steel or other suitable material. Paddles of malleable cast iron or cast steel. | Generally requires high wear-resistant materials like chilled cast iron, Ni-Hard alloys, or high-chromium steel for blades and liners. | JIS A 8603:2009 (Typical) |