BLACK DIAMOND PAVING, CO.

Kersten Stelmach, Maggie Bailey, Hailey Frankland

Cost & Time

20 minutes for the asphalt to get to about 300 degrees

The average time it takes to pave a regular freeway is about two days

275$ per square foot for highways

Transportation of Asphalt

HMA (Hot Mix Asphalt) is put in trucks to be transported to the paving sites

The trucks dump the HMA into hoppers located in the front of paving machines

The asphalt must stay at 175 degrees

Location in Distillation Tower

Lighter hydrocarbons are towards the top of the fractional column while the heavier molecules are towards the bottom

Process Involved in Manufacturing

Asphalt chunks or millings are loaded into an asphalt recycler that mixes them until they are combined

Asphalt is a compound It includes sand, crushed stone, or gravel Also petroleum and crude oil is mixed

with it too Depending on how much you heat it up,

it could become a solid or a liquid

Process cont.

The hydrocarbon material is made from the left over waste material from kerosene, gasoline, and diesel fuels

Asphalt is a hydrocarbon mixture that is heated until it has the consistency of tar

Asphalt is a by-product of the excess material after crude oil and petroleum have been harvested

http://www.youtube.com/watch?v=FI2JQ-bVNMw

Benefits of Mankind/earth/living Organisms

There are four main advantages of using asphalt: Economical Durable Safe Recyclable

Economical

Low cost It takes less time to complete

construction Saves contractors, public, and

government time Dries very fast, less traffic

Durability

Can be used for low and high traffic conditions

Tractor trailers can drive on it without it cracking under pressure

Can width stand different weather conditions

High flexibility

Safety

Smooth like finish Skid resistant Reduces splash-back Better visual differences (reduces surface

water)

Recyclable

100% recyclable Saves renewable, natural resources Its life cycle never ends (can be reused

over and over) Every year, 75 million tons of asphalt is

recycled

Risks if Asphalt is not Manufactured

If asphalt isn’t manufactured, road conditions would not be suitable for travel They would become cracked and uneven over

time Runways for planes won’t be able to handle the

weight and its velocity Eventually, the roads wouldn’t be in a good

enough condition to drive on Without petroleum in asphalt, it wouldn’t be

durable The bond between all the materials wouldn’t

stick together and form

Research & Development

By using the RAP, it will lower the amount of petroleum, crude oil, and other materials needed

an owner operator recycling 50 tons/day for 30 days, will yield a savings/profit of $90,000

Petroleum is needed to make good quality asphalt

If you discontinue asphalt, we will have to use dirt road and gravel road that damages cars and trucks

Disposal of Waste by-products

It is reusable Asphalt does not add to the landfills RAP means ‘Reclaimed Asphalt Pavement’,

asphalt pavement material that has been removed from paved surfaces and reprocessed (recycled).

This method keeps 75 million tons of asphalt out of the landfills

When it’s time to dispose of the RAP, contractors will often bring it to a hot mix plant, which charges a small fee and then recycles/resells it.

References

http://www.apa-mi.org/what_is_hot_mix_asphalt_paveme.php

http://www.asphaltrecycling.com/display.php?cnt_id=24

http://www.wisegeek.org/how-is-asphalt-made.htm

(Company we called for information is on the sheet)