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Speed bump construction material

  • 20-06-2012 7:42pm
    #1
    Redsoxfan
    Registered Users, Registered Users 2 Posts: 5,373 ✭✭✭


    Why are what appears to be cheap red bricks used to construct speed bumps in many towns? The material doesn't seem to wear well at all. Is is for 'aesthetic' reasons or have I missed something?


Comments

  • #2
    Victor
    Registered Users, Registered Users 2 Posts: 78,574 ✭✭✭✭Victor


    Some early ramps were built using bricks. However, these could not withstand the wear from cars, never mind heavier traffic.

    Following that, many were made using a red asphalt material to increase visibility. While these are OK on quieter roads, trucks and buses wear them out much faster. I think part of the problem was insufficient aggregate (stones) that is harder wearing than the smaller parts of the asphalt. The brick pattern has achieve by pressing a metal stencil into the asphalt.

    Earlier ramps certainly suffered from poor design, setting out, jointing and general workmanship. The cold weather over the last few years hugely increased damage to worn ramps.

    The current generation of ramps are being done in the same asphalt used on the main part of the road and is being laid in a single operation


  • #3
    Redsoxfan
    Registered Users, Registered Users 2 Posts: 5,373 ✭✭✭Redsoxfan


    Victor wrote: »
    The cold weather over the last few years hugely increased damage to worn ramps.

    Indeed it would appear so.
    Victor wrote: »
    The current generation of ramps are being done in the same asphalt used on the main part of the road and is being laid in a single operation

    Good to know. I guess a lot or speed bumps/ramps were retro-fitted on the cheap and are now being replaced or included when the road is designed/built.


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