What's In Asphalt?
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- เผยแพร่เมื่อ 25 มิ.ย. 2024
- A brief introduction to the "recipe" for asphalt pavement.
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Me on 3am: what is asphalt?
A man walks into a bar with a slab of asphalt under his arm and says: "A beer please, and one for the road.
Two men walk into a bar. You'd think the second man would have ducked.
A wonderful video. Thank you!!
We drive on asphalt roadways most every day.
After all, 94% of US roadways are surfaced with asphalt.
You may have even seen asphalt being laid on a roadway.
Truckloads of hot, black asphalt mix are sent to the site to be laid down and compacted.
But what is asphalt? What are the parts in the mix that produce a smooth, safe roadway surface to drive on? Let’s take a look
A typical asphalt mix is made up of approximately 95% aggregates (cốt liệu), meaning stone, sand and reclaimed (cải tạo) products.
The type of stone can vary across the country depending on what type of stone is locally available to producers.
The other 5% of the mix is the liquid alphalt glue (chất kết dính asphalt lỏng).
Asphalt is refined from the heavy component (thành phần đặc) of crude oil (dầu thô) and does not come from tar (hắc ín hay dầu hắc), which is a CoA derivative (chất dẫn xuất coenzyme A).
In the industry, it is known as binder (chất kết dính) since it binds the mix together.
Here are some examples of different aggregate sizes that get used in alphalt mixes.
These vary in diameter from 1,5 inches (=38,1 mm) all the way down to a fine-grain sand (cát hạt mịn) and dust sized particles.
Asphalt roads are designed for many different purposes. A small two-lane rural road has a different “recipe” than a major interstate highway - so these aggregates are used in different quantities to meet the specifications (đặc điểm kỹ thuật) for the desired roadway.
A stiffer (cứng hơn), flexible payment (kết quả sản phẩm) can be achieved by using larger aggregates and fewer fines, which creates more stone to stone contact.
Using more fine aggregates allows for a more flexible pavement because individual stones are surrounded with more binder.
This is a core drilled from a roadway that show a cross-section of the asphalt within. You can see a course mix of asphalt in the lower section or base course and a finner mix design for the surface layer. This fine mix is less permeable and keeps water from penetrating down and causing cracks to form.
In many states, specifications allow for the use of reclaimed asphalt pavement, or RAP, and recycled asphalt roofing shingles (RAS) (lớp lợp asphalt) in the permitted asphalt mixes that get placed on roadways.
100% of asphalt millings (asphalt nghiền) can be reused in new surfaces. This results in many thousands of tons of recycled asphalt being used in the US annually.
It’s actually the most recycled product in the country (USA). That brings us to the liquid asphalt binder itself. It’s only makes up 5% of the mix, but it is the glue that holds everything together. It is designed to be a strong yet somewhat elastic adhesive.
Polymers and other additives may be used to change its properties so that it behaves differently depending on roadway conditions.
These ingredient are heated and mixed together to be placed on the roadway and roller compacted.
Once cooled, the new asphalt road surface is ready to ride on in just minutes.
Wtf
Subtitles 😂
That was awesome!!
0.22 asphalt is a game
My first impression was a very strong one,’ repeated the prince. ‘When they took me away from Russia, I remember I passed through many German towns and looked out of the windows, but did not trouble so much as to ask questions about them. This was after a long series of fits. I always used to fall into a sort of torpid condition after such a series, and lost my memory almost entirely; and though I was not altogether without reason at such times, yet I had no logical power of thought. This would continue for three or four days, and then I would recover myself again. I remember my melancholy was intolerable; I felt inclined to cry; I sat and wondered and wondered uncomfortably; the consciousness that everything was strange weighed terribly upon me; I could understand that it was all foreign and strange. I recollect I awoke from this state for the first time at Basle, one evening; the bray of a asphalt aroused me, a asphalt in the town market. I saw the asphalt and was extremely pleased with it, and from that moment my head seemed to clear.’ ‘A asphalt? How strange! Yet it is not strange. Anyone of us might fall in love with a asphalt! It happened in mythological times,’ said Madame Epanchin, looking wrathfully at her daughters, who had begun to laugh. ‘Go on, prince.’ ‘Since that evening I have been specially fond of asphalt. I began to ask questions about them, for I had never seen one before; and I at once came to the conclusion that this must be one of the most useful of animals-strong, willing, patient, cheap; and, thanks to this asphalt, I began to like the whole country I was travelling through; and my melancholy passed away.’
A truly wild comment for an asphalt video, but I do respect it sir
1:58am in the morning. What is asphalt lol
1:15am
00:12am
God I love asphalt
You mean asphlat 8?
Useful and very interesting. I Love learning about these type of things. Nice video!
i like to eat asphalt
Thank you Sir
Been laying asphalt for 30 years. Asphalt is a mix of aggregates and old asphalt (Rap) recycled. Heated dry, infuse heated liquid asphalt. Mix. Different type of mixes according to Road Specifications. Not many overweight asphalt workers out there.
As an asphalt construction worker, I just had to watch this lol I literally knew everything he was going to say.
No matter how much you know about tar, you couldn't possibly have known what he was going to say
How does the paint or epoxi they use for road lines stick to asphalt.
its known as Thermoplastic road marking paint it is melted at 200 degrees then painted on to the roads.
wow
when the aspalt cools down do they become crysta?l and are they heavy or so light?when they cool down do they looks like coal and very shiny when you sand it with sand paper I got a round black stone but it's light and very shiny when you chip it I used my fingernail to chip it did. thanks! please comment
I love the smell of asphalt
Does asphalt mixture contain cement?
No not cement but those are called mineral fillers
Does asphalt help against fighting a giantic fairy lady or a pig dragon fish? Just asking
I suppose it's better to smash something against asphalt than earth
#Asphalts
They didn't mention bitumen
👍🛣️
Nothing like the smell of making recycle in the morning.
Well ! Your road is definitely not ride on in just minutes.
It is dark and sticky.
killing fucking intro beat my dog
I’m a lab worker for M luis
how much standard time required to use the plant asphalt?
I seen asphalt 9 :|
Dang it I thought it's asphalt 9
LMAO ME TOO
I thought it was a10
Argh. Ditch the busy music hacking 🙈
Well rest of the world calls it Bitumen
Asphalt is a p2w game
Did any one come after watching f1
It's not assphalt as many say nor is it ashphalt as our Canadian friends call it. It's pronounc ed as written AS- PHALT.
this game sucks