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concrete due to lime which neutralizes acid and toxicities in rain thus purifying before it runs into storm sewers which goes into the waterways

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Related Questions

Are there concrete roads in Washington state?

No the roads are made out of asphalt.


Is asphalt harder than concret?

Concrete is harder than asphalt because asphalt breaks easier than concrete does on roads, etc.


Why are some roads asphalt and some concrete?

Asphalt is used because primarily because it is cheaper than concrete. Asphalt is also more pliable, and can expand and contract in changing weather. Concrete, however, cannot expand or contract as well, so gaps are placed periodically to ease this tension or compression. Also Asphalt creates less noise than Concrete. it helps me walk better on da ground yasss very much


Roads are made up of what?

sand gravel, asphalt, pavement, concrete, and rebar


What are the different types of roads?

Gravel, Concrete, Asphalt, Rock... What does that have to do with Pokemon? :P


What road surface offers the best traction?

Asphalt roads are considered to provide the best traction for automobiles in most conditions. Concrete roads will provide better traction in high temperature areas.


Which type of roads has the most friction?

Rough asphalt roads typically have the most friction due to the texture of the surface, which provides better traction for vehicles. Smooth roads, such as concrete or tarmac, may have less friction and can be more slippery, especially when wet.


Why portland cement concrete convert to asphalt?

Portland cement concrete may be converted to asphalt for various reasons, including cost-effectiveness, ease of maintenance, and improved flexibility. Asphalt surfaces generally offer better resistance to cracking and can be more easily repaired than concrete. Additionally, asphalt can provide a quieter and smoother driving experience, making it a preferred choice for certain applications, such as roads and highways. Environmental considerations, such as the ability to recycle existing materials, can also influence this conversion.


Why asphalt road look like concrete?

Asphalt roads look similar in nature to concrete because both use an aggregate material consisting of rocks to make up as much as 60% of the volume of the final solid material.


Why roads and tires always in black color?

Tires are made with rubber. Asphalt roads are made with petroleum products. Both are naturally black in color. Of course, concrete roads are normally beige, the natural color of concrete. And I've seen local roads paved with a concrete/stone mix made using red shale, and they have a strong pinkish hue!


What is an asphalt?

An asphalt is a sticky, black, viscous liquid or semi-soid, present in most forms of crude petroleum and some natural deposits, or the concrete made from such substance, used for roads and walkways.


What is an element that makes up roads?

Most roads are made of asphalt concrete, which is a mixture of asphalt, which is a chemical compound, with gravel, which is just a bunch of little rocks. Asphalt, being a petroleum product, is probably just a hydrocarbon, meaning that the most common elements would be hydrogen and carbon.Maybe you just want to know a compound or ingredient for roads, in which case the answer is just asphalt. If you actually care about chemical elements, then probably hydrogen is most common.