MMC
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Advantages

Over Bitumen Road

Features Rubber Road Bitumen Road
Check Rail & Other Accessories Not Required Required
Cost of Periodical Maintenance Very Low Very High
Shock Absorption Generated By Rail Very High Nil
Expected Service Life Expected minimum 10 Years in Indian condition 1-2 Year
Ease of Track Maintenance (Full track) Very Good Nil
Ease of Track Maintenance (At any part) Very Good Nil
Ease of Machine Packing of Track Possible Not Possible
Removal & Reinstate Time Of Full Crossing Maximum 2 hours Not possible
Load Bearing Capacity Very High Comparatively Low
Resistance To Water Very High Poor
Resistance to Chemicals Very High Moderate
Resistance To Electricity (Current & Static) Very High Poor
Performance On Distorted Track Very Good Poor
Skid Resistance Very High Poor
Environmental Resistance Very Good Comparatively Low

Over Concrete Block Road

After the demise of the old timber crossings, railways were limited to using concrete and bituminous road surfaces at level crossings. Since bituminous crossings were no longer deemed to withstand traffic loads and meet safety requirements and so concrete platforms became the alternative standard.

However, across the world there is a growing trend in the railways to replace concrete bitumen or concrete surfaces with rubber crossing systems. We examine why

  • Highly safe than concrete blocks.
  • Long service life.
  • Lighter in weight, easy to handle reduces road closing/rail blocking time.
  • Easier installation and tamping simplicity.
  • Provides a smooth surface even after relative movement between rail and road level.
  • Absorbs shock loads and therefore reduces ballast settlement at the X-ing.
  • Acts well in case of any distortion in the railway track.
  • Do not crack over time like concrete panels which become unsafe.
  • Carry far higher load than concrete panels without damage.
  • Displaces water during rain away from the X-ing area and prevent ballast wash out.
  • Three men can remove a single panel within short time. No lifting equipment required.
  • Very rugged as they can be delivered to site and just pushed off the truck and stored beside the X-ing with no special care or stacking.
  • Better able to handle temperature extremes.
  • Quieter than concrete X-ings and no rattling or thumping.
  • More economic compared to service life.

Special Advantages

No Check Rail Required

Check Rail is no longer required in this system, the design itself allows passing of the projected part of the wheel. Hence the periodical maintenance of checkrail is completely waved. Checkrail gap is maintained.

Absorption Of Distortion

During continuous wagon movement rail track somewhere gets depressed. MMC Xing system, unlike bituminous road, takes such distortion of rail without damage of track.

Load Bearing Capacity

MMC crossing system can endure continuous traffic movement and tremendous weight like 500 tonnes vehicles.

Ease of Maintenance

Removal of full track within 30 min.
Reinstatement of full track within 02 hrs
Removal of individual pad at any point

Continuous Traffic Load

MMC X-ing system is effective in port situations where continuous use by maximum weight of 38 wheelers and other trucks.

No More Fatal Cases

Concrete Blocks are not suitable in X-ing where safety is concerned. These blocks get disintegrated by continuous traffic load and may lead to fatal accidents in the X-ings.