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Topic: Weather, Climate, Environment, and Energy

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MrNubbz

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Re: Weather, Climate, and Environment
« Reply #2100 on: April 07, 2020, 09:35:39 AM »
Quote from: 847badgerfan on April 07, 2020, 08:47:13 AM
I'd like to know about the structural number of this type of pavement. How would it stand up to a Chicago winter, Arizona summer, salt, leaking antifreeze, acidic soils beneath it, etc. I think I'll do a little research on it and report back. I'm not much into pavement, but this is intriguing.
My 1st take is it could stand the winter cold but plowing would make America's Funniest Videos.Be like dragging fish hooks across cork board.Salt and desert heat would be a problem.Paths and Track & Field surfaces it should work fine - gotta try
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #2101 on: April 07, 2020, 09:36:47 AM »
If you source separate glass, it gets recycled.  Mixed MSW just doesn't pay enough to pull it out of the stream very often.

I've seen one of these lines, it was long ago, folks watch the stream go by on conveyor and try to pull off Al cans mostly, they have a bin for glass and some of it gets pulled out, most of it doesn't.  The plastic and paper goes to landfill.  There could be some places this is not true.

Last time I was in the business waste paper/cardboard had negative value.  If you can get it to the recycling plant source separated, it has some value.

Writing paper and newsprint have a rather high inorganic content of course, and that is waste.
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847badgerfan

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Re: Weather, Climate, and Environment
« Reply #2102 on: April 07, 2020, 12:49:59 PM »
Quote from: MrNubbz on April 07, 2020, 09:35:39 AM
My 1st take is it could stand the winter cold but plowing would make America's Funniest Videos.Be like dragging fish hooks across cork board.Salt and desert heat would be a problem.Paths and Track & Field surfaces it should work fine - gotta try
Desert heat. I was thinking about that. Rubber gets sticky, and very hot. So, you're walking across the street, and your rubber soled show sticks to the pavement. You fall down, and you get 3rd degree burns.


Just thinking, that's all. More thinking required, obviously.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #2103 on: April 07, 2020, 12:54:10 PM »
Quote from: 847badgerfan on April 07, 2020, 08:47:13 AM
I think it could be useful for things like walking/bike paths and other light-duty uses. I can't see it on a street - not even the most lightly travelled ones.
I'm pretty sure it is not intended for a street.  

Some of the roads around here are concrete dating from maybe 1960 or so and are still in use, usually with a bit of patching.  Asphalt over concrete seems to break down faster than regular asphalt.
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betarhoalphadelta

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Re: Weather, Climate, and Environment
« Reply #2104 on: April 07, 2020, 01:21:30 PM »
Quote from: Cincydawg on April 07, 2020, 12:54:10 PM
I'm pretty sure it is not intended for a street. 

Some of the roads around here are concrete dating from maybe 1960 or so and are still in use, usually with a bit of patching.  Asphalt over concrete seems to break down faster than regular asphalt.
Many of our freeways in SoCal are concrete. I'm sure it's worse for cars and tires, but it requires less maintenance. And for a place with traffic as bad as we have it here, any time the freeway needs to be maintained it's hell, so you do what you have to do...
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847badgerfan

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Re: Weather, Climate, and Environment
« Reply #2105 on: April 07, 2020, 01:34:42 PM »
Construction methods lead to failure or success when laying asphalt over existing concrete. It's all about cracking, and if that can be minimized, success can be achieved. Good crack repair in the concrete is a must. Then, a good bituminous tack coat prior to applying the binder course.

Finally, before laying the surface, the seams in the binder course need to be sealed. For that I've seen fresh bitumen and even a sort of "tape" that is placed before the surface course is laid. 

This practice will keep water out, to the best extent possible. 

Poor drainage probably accounts for 95 percent of all pavement failure, in my experience.

Of course, I'm all about using recycled asphalt whenever possible. It works fine for a base course and it works fine for a binder course.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #2106 on: April 07, 2020, 01:44:46 PM »
Pavement failure around here is caused by constantly digging holes in the pavement and then patching the hole, badly.

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MrNubbz

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Re: Weather, Climate, and Environment
« Reply #2107 on: April 07, 2020, 01:48:32 PM »
Quote from: Cincydawg on April 07, 2020, 12:54:10 PM
I'm pretty sure it is not intended for a street. 

Some of the roads around here are concrete dating from maybe 1960 or so and are still in use, usually with a bit of patching.  Asphalt over concrete seems to break down faster than regular asphalt.
Unfortunately,budgets break down faster if you try something else
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847badgerfan

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Re: Weather, Climate, and Environment
« Reply #2108 on: April 07, 2020, 01:49:37 PM »
Quote from: Cincydawg on April 07, 2020, 01:44:46 PM
Pavement failure around here is caused by constantly digging holes in the pavement and then patching the hole, badly.


Thereby causing poor pavement drainage.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #2109 on: April 07, 2020, 01:54:11 PM »
The patches often are either raised, or dips, and the traffic going over them puts enough pressure on the bump to cause them to worsen, or so I surmise.

Back sort of point, what are the realistic prospects that the world will reduce CO2 emissions sufficient to have a measurable impact on climate change?

China, India, and everyone else.  
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MrNubbz

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Re: Weather, Climate, and Environment
« Reply #2110 on: April 07, 2020, 06:21:23 PM »
72 now,could be 30 and snowing thursday though
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CWSooner

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Re: Weather, Climate, and Environment
« Reply #2111 on: April 07, 2020, 06:57:22 PM »
We had near-freezing temps last Thurday and Friday nights.  Today we hit 89.  Friday is supposed to be back down near or even below freezing.

Weird.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #2112 on: April 08, 2020, 06:45:53 AM »
Yeah, we're going from AC to heat and back.  I'd ride it out but the wife is finnicky.
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Cincydawg

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Re: Weather, Climate, and Environment
« Reply #2113 on: April 08, 2020, 08:47:10 AM »
https://www.space.com/denman-glacier-retreat-worlds-deepest-canyon.html?fbclid=IwAR3w-nCCV-KPr2x_SxgbtNkPbT_-XibmnI5ASC_43X5IHLH8hCNxiw_Q8No

Denman Glacier's western flank flows over the deepest known land canyon on Earth, plunging at least 11,000 feet (3,500 meters) below sea level. Right now, that canyon (known as the Denman trough) is mostly cut off from the sea thanks to all the glacial ice piled inside and atop the ravine. However, as the glacier's edge continues to retreat farther and farther down the slope, warm ocean water will pour into the canyon, battering bigger and bigger sections of the glacier and gradually turning the Denman trough into a giant bowl of meltwater with nowhere else to go.
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