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sweaterandsomenikes t1_iz95cv3 wrote

Can’t answer to the first part of your question, but for the second part:

Temporary paint is used immediately after repaving a road because the fresh oils in asphalt would dissolve away the new paint. The temporary paint is a different chemistry that’s is more resistance, and I believe they do not put the little glass beads that form the reflective paint in the permanent stuff. Permanent paint will go down after a month or two.

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JaKr8 t1_iz95mrt wrote

This makes complete sense, But I never knew that was the reason for two sets of paint.

But there are always certain conditions anywhere when it rains that make it difficult to see line markings.

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sweaterandsomenikes t1_iz965a1 wrote

Probably just old paint. Paint goes on and then glass beads are poured on the wet paint. As paint wears down beads fall out.

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CT_Patriot t1_iz97xga wrote

Fresh asphalt with oil based traffic paint can discolor. That's why any parking lot that gets sealed you must use latex. Otherwise, white traffic paint will turn brown on lots or new asphalt. Yellow does turn as well if oil based.

Most town/city roads are now thermoplastic paint with glass beads added and it dries very quickly. That is more permanent than typical traffic paint.

I worked long ago with a business who did parking and roadway traffic markings .

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keepitupxxx t1_iz9f231 wrote

Never knew what that was when they paint lines an glass bead often pool on sides of road

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CT_Patriot t1_iz9huke wrote

Yeah, they sometimes add too much. It just pours through a pipe as they apply paint, the glass beads are flowing way too much that what doesn't cure in the paint gets off to the sides.

Also, slippery as hell too...the glass beads.

I'd rather see the imbedded reflective markers. Those light up really well! Cost is high, but they outway other forms of traffic markings in reflectivity at night.

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russsl8 t1_iz9o4xr wrote

Yeah problem with those is the plows will tear those up fairly regularly too with how often they maintain the roads in CT (meaning not often).

Even the recessed ones are not safe from our big orange boys.

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CT_Patriot t1_izawqk4 wrote

Yep, seen a few times they rip a few up when the blade catches them and the blade does not spring back or if they still use the metal lip vs a hard plastic lip on the blade.

Most DOT are all metal tip bladed as sparks fly when hitting pavement not covered.

Still, love how well those reflective markers light up at night, both yellow and white just blaze up with headlights vs paint with glass beads unless it's fresh painted.

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WhittlingDan t1_izafz1d wrote

When wet out I behave fallen on my ass a couple times because it is so slippery, and this was in crosswalks.

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CT_Patriot t1_izattz3 wrote

Yes, traffic paint w/o glass beads when newly applied and it's raining....easily to slip on.

After striping a parking lot and crosswalk before it rained, then as it did I went to pick up cones, landed right on my ass. Crew laughed like hell but hurt like a SOB! Learned from then on to be very careful on those and speed humps when wet

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keepitupxxx t1_izb3un9 wrote

At least the glass makes nice art when you scoop it up from the over pouring

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CT_Patriot t1_izbo3tj wrote

Same when they "oil" a road and apply the bluestone pebbles.

My father and I would go out on our street with the International Harvestor tractor and the trailer to scoop up all the bluestone off on the sides of the road.

We could fill up that trailer with a shit ton of the stone ..thanks to our town..😁

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WhittlingDan t1_izaft5b wrote

Can we use glow in the dark (either actually in the paint or as beeds)beads in the paint and not just reflection?

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CT_Patriot t1_izauaj8 wrote

Doesn't last long. We tried once at a parking lot and it lost its effectiveness in a month or less.

Only way is glass beads or thermoplastic hot tape which has a more reflective product in it, but in time, you'll see those peel off roadways. Mostly used for temporary marking until Safety Mark gets their truck out with the liquid thermoplastic "paint" and beads.

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Subpar-dad t1_izbgeiq wrote

ConnDOT doesn’t spec thermoplastic for highways. Atleast I don’t see it in the form 818 which is ConDOTs standards on construction materials. It’s usually waterborne, hot applied waterborne or epoxy resin. Epoxy resin has the highest level of wet night reflectivity and lasts 3-5 years as opposed to thermoplastic which is only 2-4 and has medium level wet night reflectivity.

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mkt853 t1_izbnjmh wrote

Yeah I was gonna say I've never seen it either. The final installation is usually just paint that's grooved in i.e. milled lines that have the paint laid in them to increase longevity.

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Subpar-dad t1_ize5s2t wrote

After talking to a senior engineer at my firm he said ConnDOT use to use thermoplastic years ago but they have since moved on to epoxy resin.

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CT_Patriot t1_izbnoz2 wrote

Most likely the resin type. Whatever Safety Marking uses on roadways.

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Subpar-dad t1_ize6162 wrote

They sometimes still use thermoplastic for city and town municipalities just not on highways any longer!

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