Asphalt Driveway Over Gravel: Why The Gravel ?
Hello,
Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob |
Asphalt Driveway Over Gravel: Why The Gravel ?
On 8/30/2010 11:46 AM, Bob wrote:
Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob A: asphalt pavement is not liquid B: the gravel is for drainagek and stability. -- Steve Barker remove the "not" from my address to email |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Aug 30, 12:06*pm, Steve Barker wrote:
On 8/30/2010 11:46 AM, Bob wrote: Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob A: asphalt pavement is not liquid B: the gravel is for drainagek and stability. snip Steve's right...you're confusing paving asphalt (contains a lot of gravel aggregate) and roofing asphalt (contains minor amounts of finer fillers). Next time you drive by a highway surfacing project note the big dump body trucks lined up there filled with hot mix. No liquids there. Joe |
Asphalt Driveway Over Gravel: Why The Gravel ?
Bob wrote the following:
Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob To prevent or minimize frost heave for one. -- Bill In Hamptonburgh, NY In the original Orange County. Est. 1683 To email, remove the double zeroes after @ |
Asphalt Driveway Over Gravel: Why The Gravel ?
On 8/30/2010 1:31 PM, Joe wrote:
On Aug 30, 12:06 pm, Steve wrote: On 8/30/2010 11:46 AM, Bob wrote: Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob A: asphalt pavement is not liquid B: the gravel is for drainagek and stability. snip Steve's right...you're confusing paving asphalt (contains a lot of gravel aggregate) and roofing asphalt (contains minor amounts of finer fillers). Next time you drive by a highway surfacing project note the big dump body trucks lined up there filled with hot mix. No liquids there. Joe The liquid, sticky, or plastic part (asphalt cement) is only 5% of the total mix. The rest is aggregate. |
Asphalt Driveway Over Gravel: Why The Gravel ?
"Bob" wrote in message ... Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob The folk responding about asphalt are right, so I won't duplicate their effort. However, you might also be recalling the old Macadam road technique with the modern version. http://en.wikipedia.org/wiki/Macadam In my home town, many of the streets were Macadam and they did very well. Occasionally, the street department would employ a tractor with wheel disk to turn up the streets, and then they'd be rolled smooth, with a thick layer of asphalt then applied. The final touch was a new coating of pea gravel to reduce tar pick-up by car tires. The streets held up beautifully and the technique most likely would be considered, "Green," in today's world. Micajah |
Asphalt Driveway Over Gravel: Why The Gravel ?
Joe wrote in
: Steve's right...you're confusing paving asphalt (contains a lot of gravel aggregate) and roofing asphalt (contains minor amounts of finer fillers). Next time you drive by a highway surfacing project note the big dump body trucks lined up there filled with hot mix. No liquids there. Then there's "hardtop", which is common in my area on lightly-loaded roads: You lay down the usual packed-aggregate roadbed, then spray really runny tar on the surface. Then you spread pea-gravel on top of that, and just let passing traffic roll it in the rest of the way. Excess gravel gets pushed off to the shoulder over time. It's fairly durable if you keep heavy trucks off of it. -- Tegger |
Asphalt Driveway Over Gravel: Why The Gravel ?
On 8/30/2010 1:56 PM, Micajah wrote:
"Bob" wrote in message ... Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob The folk responding about asphalt are right, so I won't duplicate their effort. However, you might also be recalling the old Macadam road technique with the modern version. http://en.wikipedia.org/wiki/Macadam In my home town, many of the streets were Macadam and they did very well. Occasionally, the street department would employ a tractor with wheel disk to turn up the streets, and then they'd be rolled smooth, with a thick layer of asphalt then applied. The final touch was a new coating of pea gravel to reduce tar pick-up by car tires. The streets held up beautifully and the technique most likely would be considered, "Green," in today's world. Micajah Where is your hometown? I noticed you used the word "Macadam", that is a rare word in the US. Named for a man named John McAdam. The first to use stone and roll it to lock the stones together to make better roads. Later he added oil/tar on top to help it last through heavy rains. That is were the word "Tarmac" became popular and is still used at airports. I come from a part of PA, USA where the outdated word "Macadam" was still used to describe asphalt/blacktop. If I use the word today not many people will know what it means. |
Asphalt Driveway Over Gravel: Why The Gravel ?
"Tony" wrote in message ... On 8/30/2010 1:56 PM, Micajah wrote: "Bob" wrote in message ... Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob The folk responding about asphalt are right, so I won't duplicate their effort. However, you might also be recalling the old Macadam road technique with the modern version. http://en.wikipedia.org/wiki/Macadam In my home town, many of the streets were Macadam and they did very well. Occasionally, the street department would employ a tractor with wheel disk to turn up the streets, and then they'd be rolled smooth, with a thick layer of asphalt then applied. The final touch was a new coating of pea gravel to reduce tar pick-up by car tires. The streets held up beautifully and the technique most likely would be considered, "Green," in today's world. Micajah Where is your hometown? I noticed you used the word "Macadam", that is a rare word in the US. Named for a man named John McAdam. The first to use stone and roll it to lock the stones together to make better roads. Later he added oil/tar on top to help it last through heavy rains. That is were the word "Tarmac" became popular and is still used at airports. I come from a part of PA, USA where the outdated word "Macadam" was still used to describe asphalt/blacktop. If I use the word today not many people will know what it means The hometown is a small farming community in central MO, but dates back well before the War of Northern Aggression. The streets there are nowadays a typical mixed bag of asphalt, concrete and Macadam, but as far as I know, the Macadam ones are still maintained by the occasional wheel disking, rolling, new tar and a coat of pea gravel. FWIW, most of the older curbs are cut granite. Micajah |
Asphalt Driveway Over Gravel: Why The Gravel ?
"Tegger" wrote in message ... Joe wrote in : Steve's right...you're confusing paving asphalt (contains a lot of gravel aggregate) and roofing asphalt (contains minor amounts of finer fillers). Next time you drive by a highway surfacing project note the big dump body trucks lined up there filled with hot mix. No liquids there. Then there's "hardtop", which is common in my area on lightly-loaded roads: You lay down the usual packed-aggregate roadbed, then spray really runny tar on the surface. Then you spread pea-gravel on top of that, and just let passing traffic roll it in the rest of the way. Excess gravel gets pushed off to the shoulder over time. It's fairly durable if you keep heavy trucks off of it. This is the classic Macadam-type of paving. Micajah |
Asphalt Driveway Over Gravel: Why The Gravel ?
Tony wrote:
-snip- Where is your hometown? I noticed you used the word "Macadam", that is a rare word in the US. Named for a man named John McAdam. The first to use stone and roll it to lock the stones together to make better roads. Later he added oil/tar on top to help it last through heavy rains. That is were the word "Tarmac" became popular and is still used at airports. I come from a part of PA, USA where the outdated word "Macadam" was still used to describe asphalt/blacktop. If I use the word today not many people will know what it means. I'm in upstate NY & grew up in Schenectady, Schoharie & Greene counties in the 50s-60s. I used the term last year and was amazed that none of the folks I talked to knew what it was. My wife grew up in Saratoga county- and the folks I was talking to were all from the NY city area. [and a bit younger] I didn't think to look it up back then, but when Micajah used it I Wiki'ed it. I knew it was named for Mr. McAdam- but didn't know the specifics of *his* roads. I've always used the term[improperly, it appears] to refer to any asphalt surface. Jim |
Asphalt Driveway Over Gravel: Why The Gravel ?
Tegger wrote in
: Joe wrote in : Steve's right...you're confusing paving asphalt (contains a lot of gravel aggregate) and roofing asphalt (contains minor amounts of finer fillers). Next time you drive by a highway surfacing project note the big dump body trucks lined up there filled with hot mix. No liquids there. Then there's "hardtop", which is common in my area on lightly-loaded roads: You lay down the usual packed-aggregate roadbed, then spray really runny tar on the surface. Then you spread pea-gravel on top of that, and just let passing traffic roll it in the rest of the way. Excess gravel gets pushed off to the shoulder over time. It's fairly durable if you keep heavy trucks off of it. This is a terrible way to surface roads. It really plays havoc on your skates after a icestorm. DAMHIKT! -- Best regards Han email address is invalid |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Aug 30, 11:37*pm, "Micajah" wrote:
The hometown is a small farming community in central MO, but dates back well before the War of Northern Aggression. *The streets there are nowadays a typical mixed bag of asphalt, concrete and Macadam, but as far as I know, the Macadam ones are still maintained by the occasional wheel disking, rolling, new tar and a coat of pea gravel. *FWIW, most of the older curbs are cut granite. Micajah Sounds like the "War" isn't over yet? |
Asphalt Driveway Over Gravel: Why The Gravel ?
On 8/30/2010 7:31 PM, Tegger wrote:
wrote in : Steve's right...you're confusing paving asphalt (contains a lot of gravel aggregate) and roofing asphalt (contains minor amounts of finer fillers). Next time you drive by a highway surfacing project note the big dump body trucks lined up there filled with hot mix. No liquids there. Then there's "hardtop", which is common in my area on lightly-loaded roads: You lay down the usual packed-aggregate roadbed, then spray really runny tar on the surface. Then you spread pea-gravel on top of that, and just let passing traffic roll it in the rest of the way. Excess gravel gets pushed off to the shoulder over time. It's fairly durable if you keep heavy trucks off of it. This is known as "chip and seal" (although in actuality it's seal and chip) in my area. -- Steve Barker remove the "not" from my address to email |
Asphalt Driveway Over Gravel: Why The Gravel ?
The asphalt material is slightly pliable. The surface underneath needs to
be a hard compacted surface -- I think it is compacted modified stone (or something like that). That creates a solid surface for the asphalt material. The first layer of asphalt material needs to also be compacted with at least a 5,000 pound roller and is called a stabilizing layer. Then a second coat of asphalt goes on top of that and is compacted. Bob wrote: Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob |
Asphalt Driveway Over Gravel: Why The Gravel ?
"RogerT" wrote in message ... The asphalt material is slightly pliable. The surface underneath needs to be a hard compacted surface -- I think it is compacted modified stone (or something like that). That creates a solid surface for the asphalt material. The first layer of asphalt material needs to also be compacted with at least a 5,000 pound roller and is called a stabilizing layer. Then a second coat of asphalt goes on top of that and is compacted. If you don't put something down first and compact it, you will have a roller coaster surface once traffic has run on it a year or so. Steve read about heart surgery and how to prepare for it at: http://cabgbypasssurgery.com |
Asphalt Driveway Over Gravel: Why The Gravel ?
On 8/31/2010 6:27 AM, Jim Elbrecht wrote:
wrote: -snip- Where is your hometown? I noticed you used the word "Macadam", that is a rare word in the US. Named for a man named John McAdam. The first to use stone and roll it to lock the stones together to make better roads. Later he added oil/tar on top to help it last through heavy rains. That is were the word "Tarmac" became popular and is still used at airports. I come from a part of PA, USA where the outdated word "Macadam" was still used to describe asphalt/blacktop. If I use the word today not many people will know what it means. I'm in upstate NY& grew up in Schenectady, Schoharie& Greene counties in the 50s-60s. I used the term last year and was amazed that none of the folks I talked to knew what it was. My wife grew up in Saratoga county- and the folks I was talking to were all from the NY city area. [and a bit younger] I didn't think to look it up back then, but when Micajah used it I Wiki'ed it. I knew it was named for Mr. McAdam- but didn't know the specifics of *his* roads. I've always used the term[improperly, it appears] to refer to any asphalt surface. Jim That is how I grew up using the name. Macadam meant Asphalt. I used the word Macadam around some friends a few years ago and got strange looks and questions, that's when I looked it up. |
Asphalt Driveway Over Gravel: Why The Gravel ?
"Tony" wrote in message ... On 8/31/2010 6:27 AM, Jim Elbrecht wrote: wrote: -snip- That is how I grew up using the name. Macadam meant Asphalt. I used the word Macadam around some friends a few years ago and got strange looks and questions, that's when I looked it up. Huh. I'm late 50s in upstate NY and that's what EVERYone around here calls it, both younger and my age. Or, at least, I've never had any strange looks or questions. Probably because I'm in the boonies. I'll admit, though, "Red Asphalt" is a sexier title for a drivers' ed video than "Red Macadam". |
Asphalt Driveway Over Gravel: Why The Gravel ?
The enemy of a road, driveway or parking lot is water under the surface.
The inevitable vertical movement of the surface, when a vehicle passes over it, creates what's called "Pumping" of the dirt under the pavement. It liquefies dirt, clay or other fine material, removing even more support for the surface layer with the inevitable cascading result of alligatoring and pot holes. Compacted and drained stone doesn't lose support for the surface when moved about by traffic and if the water can be turned away at the surface level, then the underlying dirt doesn't liquefy. Just as important as the water-turning ability of the road surface is the ability for the water that makes it through to escape. That's why there are ditches and stone underlayment. They're just as important in draining out water under the roadway as they are to carry off rainwater to prevent roadway flooding. I know of at least one very long stretch of an Interstate highway where the designers failed to understand this. The cure was to trench deeply alongside the concrete roadway of both lanes, on both sides, install drain tile and then backfill with coarse stone to carry the undersurface water to ditches. By the way, expansive soils are also an enemy of roads, just as they are an enemy of basements. One lady, who was an NCSU graduate engineer, didn't understand what expansive soils were and approved an entire highway interchange to be constructed using expansive soil for the ramps. It never even opened before the concrete began to crack and fail. Micajah "Steve B" wrote in message ... "RogerT" wrote in message ... The asphalt material is slightly pliable. The surface underneath needs to be a hard compacted surface -- I think it is compacted modified stone (or something like that). That creates a solid surface for the asphalt material. The first layer of asphalt material needs to also be compacted with at least a 5,000 pound roller and is called a stabilizing layer. Then a second coat of asphalt goes on top of that and is compacted. If you don't put something down first and compact it, you will have a roller coaster surface once traffic has run on it a year or so. Steve read about heart surgery and how to prepare for it at: http://cabgbypasssurgery.com |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Aug 31, 6:54*pm, aemeijers wrote:
Bob Villa wrote: On Aug 31, 5:16 pm, "h" wrote: "Tony" wrote in message ... On 8/31/2010 6:27 AM, Jim Elbrecht wrote: *wrote: -snip- That is how I grew up using the name. *Macadam meant Asphalt. *I used the word Macadam around some friends a few years ago and got strange looks and questions, that's when I looked it up. Huh. I'm late 50s in upstate NY and that's what EVERYone around here calls it, both younger and my age. Or, at least, I've never had any strange looks or questions. Probably because I'm in the boonies. I'll admit, though, "Red Asphalt" is a sexier title for a drivers' ed video than "Red Macadam". Others might over look this but equating blood and death with sex. What ARE you some kind of necrophiliac? Within the context of the film and video and training industry, he is using the term correctly. Just like your local newscast or newspaper, if your town still has one. "if it bleeds, it leads." Whatever it takes to get the rubes in the tent, so you can deliver the content, either training info to wetware storage, or eyeballs to advertisers. -- aem sends... You must have a huge lea way for toleration. You are accepting abnormal behavior for normal. |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Aug 31, 7:26*pm, Bob Villa wrote:
On Aug 31, 5:16*pm, "h" wrote: "Tony" wrote in message ... On 8/31/2010 6:27 AM, Jim Elbrecht wrote: *wrote: -snip- That is how I grew up using the name. *Macadam meant Asphalt. *I used the word Macadam around some friends a few years ago and got strange looks and questions, that's when I looked it up. Huh. I'm late 50s in upstate NY and that's what EVERYone around here calls it, both younger and my age. Or, at least, I've never had any strange looks or questions. Probably because I'm in the boonies. I'll admit, though, "Red Asphalt" is a sexier title for a drivers' ed video than "Red Macadam". Others might over look this but equating blood and death with sex. What ARE you some kind of necrophiliac? He's talking about those standard driver's ed films that are intended to scare teenagers into good driving habits. "Sexier" is loosely used in advertising and other areas to mean "more interesting, more compelling, more eye-catching". I would google some examples of "sexier" being used this way, but I know better than to plug those letters into a search engine. Cindy Hamilton |
Asphalt Driveway Over Gravel: Why The Gravel ?
"Micajah" wrote in
: "Tegger" wrote in message ... Then there's "hardtop", which is common in my area on lightly-loaded roads: You lay down the usual packed-aggregate roadbed, then spray really runny tar on the surface. Then you spread pea-gravel on top of that, and just let passing traffic roll it in the rest of the way. Excess gravel gets pushed off to the shoulder over time. It's fairly durable if you keep heavy trucks off of it. This is the classic Macadam-type of paving. I didn't know that. We just call it "hardtop". That's to differentiate it from the softer gravel/sand mix which goes on roads that are lesser to hardtopped roads. The big advantage of hardtop is that it's really cheap to install compared to asphalt, but is a lot more durable (and cleaner and washboard-resistant) than gravel/sand. -- Tegger |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Sep 1, 5:23*pm, Tegger wrote:
"Micajah" wrote om: "Tegger" wrote in message ... Then there's "hardtop", which is common in my area on lightly-loaded roads: You lay down the usual packed-aggregate roadbed, then spray really runny tar on the surface. Then you spread pea-gravel on top of that, and just let passing traffic roll it in the rest of the way. Excess gravel gets pushed off to the shoulder over time. It's fairly durable if you keep heavy trucks off of it. This is the classic Macadam-type of paving. I didn't know that. We just call it "hardtop". That's to differentiate it from the softer gravel/sand mix which goes on roads that are lesser to hardtopped roads. The big advantage of hardtop is that it's really cheap to install compared to asphalt, but is a lot more durable (and cleaner and washboard-resistant) than gravel/sand. -- Tegger "Hardtop" is a kind of car...but I have heard of "blacktop". |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Aug 31, 7:39*pm, "h" wrote:
Others might over look this but equating blood and death with sex. What ARE you some kind of necrophiliac? Wow! Epic fail for reading comprehension! Which douchebag posted this? Vic Smith or Heybub? Or one of the other many of KF'd losers? Within the context of the film and video and training industry, he is using the term correctly. Just like your local newscast or newspaper, if your town still has one. "if it bleeds, it leads." Whatever it takes to get the rubes in the tent, so you can deliver the content, either training info to wetware storage, or eyeballs to advertisers. And it's "she", by the way. WTF does advertising lingo have to do with reading comprehension? (And since you are a she...you must have loved my reference to Barbies on the other thread.?) |
Asphalt Driveway Over Gravel: Why The Gravel ?
Bob Villa wrote in
: "Hardtop" is a kind of car...but I have heard of "blacktop". I thought "blacktop" was asphalt. "Hardtop" is gray, on account of the gravel rolled into the tar. -- Tegger |
Asphalt Driveway Over Gravel: Why The Gravel ?
On Aug 30, 9:37*pm, "Micajah" wrote:
"Tony" wrote in message ... On 8/30/2010 1:56 PM, Micajah wrote: "Bob" wrote in message ... Hello, Was just wondering about this. It is pretty well accepted, apparently, that a new asphalt driveway for a residence should be laid over about 4" to 6" of gravel. Never over soil directly. Why ? The hot, liquid, asphalt I would pretty much think makes the gravel into one, solid, "clump" underneath (the asphalt). So, it's hard to see that any improved drainage results. Increased "stability" perhaps ? If so, how ? So what does the gravel add as a benefit over just laying the asphalt on top of well compacted soil ? Thanks, Bob The folk responding about asphalt are right, so I won't duplicate their effort. However, you might also be recalling the old Macadam road technique with the modern version.http://en.wikipedia.org/wiki/Macadam In my home town, many of the streets were Macadam and they did very well. Occasionally, the street department would employ a tractor with wheel disk to turn up the streets, and then they'd be rolled smooth, with a thick layer of asphalt then applied. The final touch was a new coating of pea gravel to reduce tar pick-up by car tires. The streets held up beautifully and the technique most likely would be considered, "Green," in today's world. Micajah [...] The hometown is a small farming community in central MO, but dates back well before the War of Northern Aggression. That's funny -- I thought it was the war to hold the Union together, and secondarily to free the slaves. *[...] |
Asphalt Driveway Over Gravel: Why The Gravel ?
On 9/1/2010 9:33 PM, Tegger wrote:
Bob wrote in : "Hardtop" is a kind of car...but I have heard of "blacktop". I thought "blacktop" was asphalt. "Hardtop" is gray, on account of the gravel rolled into the tar. I haven't seen that yet, except for tar and chip or whatever they call that. Actually I knew of one road that when paved it must have had way too much tar and not enough stone. On some of the hotter summer days they would coat it with stone but I don't recall if they rolled it or let the cars do the work. As far as I know they were still adding stone after 6 or 7 years and it was still turning somewhat liquid on the hottest days. |
Asphalt Driveway Over Gravel: Why The Gravel ?
replying to Tegger, Jake wrote:
We call that Tar and Chip or Shot and Chip around here (NW Pennsylvania) very popular on the back roads that get traveled enough to get away from dirt and its cheap to repair/replace when the snow plows tear into it -- posted from http://www.homeownershub.com/mainten...el-472959-.htm |
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