Remember the thread about different colored roads?
#21
01-05-2008, 01:46 PM
My uncle does concrete coloring in driveways with some really cool patterns.
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Life is a highway. And good surf.
#22
01-06-2008, 12:41 PM
Originally Posted by Consider
Originally Posted by marylandkw
Originally Posted by Central Coast Driver
Some of the roads on the Hawaiian Islands have a reddish lava color. I guess because the red volcanic dirt gets mixed in somehow.
Asphalt (Bituminous concrete) is composed of the following: 1. Liquid Asphalt 2. Aggregate (any size of stone) 3. Sand (this will have an effect on the color of the asphalt) 4. Stone Dust (this too will have a significant effect on the color) Now there are far too many variations of asphalt to discuss here however if you adjust the levels of any of the above components you get a different product. Be that a "Base Course" or a "Surface Course" and some mixed omit any or all of the ingredients from above such as "Sand Mix" and all have a very specific place. Most mixes will not have a coloring agent in them as it is rather expensive to add. Most asphalt plants do not care about the color of the Product only the quality. Color is typically not a special concern. Regular asphalt is around $50 a ton, the colored stuff is around $90 a ton. Do you have any idea if the cost is related to the actual cost of the materials, or whether it's related to the ability of those who want it it to pay more???? (it would be so great it we could save the heat from our highways. I wish that rather than giving tax breaks to the oil and gas industry when they are making record profits, we would take that money and use it to develope some low cost heat alternatives for people, ordinary people.) I don't know what it cost now but liquid asphalt awhile back was $450 a ton, rock is anywhere from $10 to $16 a ton, screenings is about $12 to $14 a ton I'm not sure about sand. |
