Friday, September 9, 2011

Interesting Homework

For the first time in quite a while, I had a homework assignment that was actually kinda cool. I had to go out and find two pavement problems around campus. Take a picture of each, and classify it. Since I bike around campus regularly, I didn't have to go find any, I just stopped by two places on one of my regular rides.I think the pictures are pretty interesting, so I'm posting them here.

The first is quite obviously a pothole. As cars drive over weak spots in wet pavement, the compression from the weight of the car forces water out, and the water pulls out some asphalt/concrete particles as well. Over time, a hole builds up under the surface where those particles used to be, and eventually it collapses down, forming the pothole.

The second is a longitudinal crack, which is a crack going along the lengthwise direction of the road, not crossing it. This one is actually pretty terrible, it's as wide as an inch in some places. If you also notice, the pavement isn't smooth at all, you can see lots of tiny holes and gaps. It's a pavement that is old and needs to be repaired or replaced, soon.


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