![Marshall Klinefelter](/img/default-banner.jpg)
- Видео 24
- Просмотров 126 804
Marshall Klinefelter
Добавлен 11 июл 2012
Maryland Asphalt Association shares videos of it's members and their companies.
Construction Careers for a Life Time
Career Day AA Co PSA The construction industry is a great career choice for high school and college graduates. The job options are diverse ranging from office support (engineers to accountants) to field personnel (laborers, truck drivers and other skilled large equipment operators). This video provides a glimpse into the jobs and information on the rewards that can be gained from this field.
Просмотров: 81
Видео
CT Index Testing - The Challenge is on
Просмотров 2084 года назад
Asphalt Production is an essential function and technicians are designing new mixes and optimizing existing blends by performing the Ideal CT test. This test helps designers understand the potential for cracking of their mixes and helps them improve their performance.
Tack Coat Application
Просмотров 1,3 тыс.5 лет назад
The importance of the tack coat application between asphalt pavement layers cannot be stressed enough. Understanding that a properly designed pavement structure will only function optimally if there is proper drainage, proper selection of materials for the aggregate base course, proper thickness of pavement layers, and that those pavement layers all function monolithically to withstand the life...
Applying Tack Coat - Best Practices
Просмотров 57 тыс.5 лет назад
The importance of the tack coat application between asphalt pavement layers cannot be stressed enough. Understanding that a properly designed pavement structure will only function optimally if there is proper drainage, proper selection of materials for the aggregate base course, proper thickness of pavement layers, and that those pavement layers all function monolithically to withstand the life...
MDA Agg Testing CTM DFC
Просмотров 6555 лет назад
The Maryland Department of Transportation - State Highway Administration takes aggregate qualities very seriously. The state uses a standard practice for accelerated polishing of aggregates using a small-wheel circular track polishing device and measuring the surface frictional properties using a dynamic friction tester. These tests are documented in MSMT 215 and MSMT 216.
Maryland Method Longitudinal Joint Compaction
Просмотров 39 тыс.6 лет назад
The process of creating the optimal asphalt joint aside a previously created joint follows a few simple rules. First overlap the adjoining lap 1.5". Second, lock and consolidate the pavement a foot off the new joint. This creates an area of resistance which confines the mix during the second step and forces mix towards the existing joint. The third step uses the full force provided by the compa...
Dover Bridge Paving
Просмотров 8306 лет назад
It’s June 6, 2018 and a new day is dawning at the Dover Bridge. Just six days short of the three year anniversary of the start of the first quarantine phase of the embankment on the Caroline County side, the bridge will be tied into the existing MD 331 asphalt. This long awaited project is a tribute to the skill of the Mc Lean Contracting Company and David A. Bramble, Inc. employees who constru...
Watch for Us
Просмотров 406 лет назад
April 9-13 is National Work Zone Awareness Week. A thin orange line divides our workers from tons of steel moving at high speeds. In Maryland there were 73 WZ Deaths from 2007 to 2016. Motorist need to slow down and respect the dedicated, hard-working men and women who quickly make your ride smooth, quiet, and safe.
Maryland Asphalt Field Technician Intro
Просмотров 1,4 тыс.6 лет назад
The Maryland State Highway Administration requires that all persons dealing with the sampling, testing, recordation of test data relating to asphalt field samples be certified. This is an introduction to the lessons provided.
Speed of Construction
Просмотров 466 лет назад
Asphalt allows for the maintenance of roadways during non-peak traffic hours and increased safety to the workers and the motoring public. Asphalt is the Answer!
UTBWC Comes to the Eastern Shore
Просмотров 2 тыс.7 лет назад
Ultra Thin Bonded Wearing Course is a specialty mix application designed to provide a superior riding surface to roads which are reaching their maintenance interval while exhibiting very low levels of distress. An oxidized asphalt surface can become new again when a heavy polymer modified emulsion membrane is applied to the surface by a highly specialized spray paver followed immediately by a 5...
Dover Bridge Series 7
Просмотров 2,6 тыс.8 лет назад
Fourteen months of highly orchestrated construction has resulted in a transformation that is hard to imagine without witnessing it firsthand. The Dover Bridge series continues with the seventh installment. The substructure of twelve piers and two abutments are nearly complete with only the Caroline County side abutment left to be constructed. The embankments are now in their third 150-day quara...
Dover Bridge Series 6
Просмотров 9548 лет назад
As of April 15, 2016 the project is about one month away from the end of the second 150-day quarantine period for its embankments. 14 prestressed concrete girders have placed on the pedestals atop piers six, seven, eight, and nine. "The Baltimore," McLean's heavy capacity floating crane is rigged and has guy wires attached to a concrete girder ready to hoist it over to the Omega Trestle. The tr...
Dover Bridge Series 5
Просмотров 1 тыс.8 лет назад
As February comes to an end, the Dover Bridge is truly becoming a bridge following the installation of some of the horizontal girders. In less than a month project manager Jay Musser and his team have bolted together 23 girder segments and installed bladders on top of piers 4, 5, and 6. Pier 2’s water line pier cap is being outfitted with a granite masonry facing to resist the harsh environment...
Dover Bridge Series 4
Просмотров 1,8 тыс.8 лет назад
The Dover Bridge is now in its second quarantine period as the embankments continues its consolidation process as layer after layer of high-strength geotextile and select borrow brings the grade up to specification. Much of the work is focused on preparing the piers to receive the truss beams. All the work is greatly simplified in this environmentally sensitive area by the trestle which allows ...
Fiberless SMA hits the mainline in Maryland
Просмотров 6 тыс.9 лет назад
Fiberless SMA hits the mainline in Maryland
Flanigan - Foamed Asphalt Stabilized Base
Просмотров 1,6 тыс.10 лет назад
Flanigan - Foamed Asphalt Stabilized Base
P. Flanigan Open House Porous Pavement
Просмотров 32011 лет назад
P. Flanigan Open House Porous Pavement
Impressive and generously presented
Hello, could you tell me the model of the cold planer at 1:30 min? It's cool that it has its own asphalt container. EDIT: Nevermind, that's a separate dump truck. Model of the truck then?
This is certainly not how rolling is done here, after the initial pinch you should run your drum more then half way over the new mat to seal the joint as this pass will push the material back which was pushed away when pinching the joint, pinching an overlapped joint will basically result in the same results with busted aggregates but like demonstrated in this video it’s for durability not LOOKS!
Sir i am Bahrain job 7 year asphalt work
Sir i going sir you company
Very nice my friend, thanks for this video👍
Well explained.
can you use this tack as a driveway sealant??
No, that is not recommended.
This is so cool. I just visited the old bridge today. I didn't realize how new the current bridge really was.
Tack truck driver of 5 years here. I originally operated out of Texas spraying multiple types of emulsions, but now that I operate out of Northern Georgia we spray asphalt cement typically applied at 375°Fahrenheit. All of the luxury of shifting, lowering, and lifting the bars at that temperature and with AC material becomes dangerous due to a history of o-seals rupturing either end of the drop tubes. Do you have any suggestions?
Greg, Spraying straight asphalt has many bonuses, but as you mentioned, some hazards. I foresee a day when the tack truck will be able to apply a void-reducing membrane on the longitudinal joint simultaneously with the tack on the remaining mainline. A single application temperature would be needed for a two-material system. The key to operating at those elevated temperatures is keeping the temperatures at the minimum needed to have the pumpability of your materials while not clogging your nozzles. Second is maintenance to your system including the nozzles. Keep them free flowing so we can keep the pressures at the minimum needed for proper application. Thank you for doing a great job and please be safe out there!!! -Marshall
Contribuição : ruclips.net/video/xQ-P-3Rm3uE/видео.html
.22 / .25 litres per square meter if anyone in Canada is wondering. We dont use gallons per square yard up here.
Perfect 👍🏻
Why is the driver overspraying so much?
Good question... They were spraying at 50% of the typical rate so that we could clearly show the distinguishing features of the tack prior to breaking and setting. When they finished they had the unpaved areas properly coated at a rate on the high end of the specification.
Hello Marshal, Do you see an issue applying tack coat one (1) day in advance due to cold temps? Assume zero traffic on the tack in this period as the road is closed...
Ryan, not at all as long as you can keep the tack clear of foreign debris. I have been on a job where we were required to tack in advance on an airport runway, and after the crews left, airport maintenance crews mowed a nearby field and tumble weeds covered the entire mat. It heavily delayed the paving operations while the surface was cleaned and retacked.
@@MarshallKlinefelter youre awesome! Thanks for the response. Great video!
Hello can you help me about this system?
It’s funny how they do things differently everywhere cuz if you rolled like this where I’m from you’d be kicked off the roller 😂
Do a roadtec course, it's a similar method to what they recommend. You shouldn't pinch a join more that a half drum of a roller. Basically what you have done is push the material out of the join. It might look mickey mouse, if you pinch, but if your goal is joint compaction, that's how you achieve it.
My boss would be screaming with that much overlap. RAKE IT IN. NOW
The guy who taught me to roll said “when it comes to paving, everybody’s right and you’re wrong” 🤣🤣🤣
@@awarootsyep
👍🛣️👍🔥
Great video. Thank you for a wonderful presentation
👍🛣️👍🔥
Well done.
ROADA ROLLA DAAAAAAAA
Wry comment.
Much appreciated for outstanding sharing.
Glad you enjoyed it
👍🛣️👍
👍🛣️
I want to be a tack truck driver. Any company in the chicago area looking for a CDL driver I am willing to learn the trade.
I hate the distributor
ruclips.net/channel/UCSiaHKyoxSyoc8Rzb2thXJA
Is possible to send specs cover this operation ? Appreciate if you can
I have uploaded a brochure for you.: drive.google.com/file/d/1EmUG3FVg3pEVz_ED9qa7O8X7a0L3c2gG/view?usp=sharing 504.03.08 Joints. Construct joints as directed and as follows: (a) Stagger longitudinal and transverse joints in successive courses so that one is not directly above the other. (b) Stagger transverse joints by the length of the paver. (c) Stagger longitudinal joints at least 6 in. and arrange so that the longitudinal joint in the top course is within 6 in. of the line dividing the traffic lanes. (d) Construct joints in a manner that provides a continuous bond between the old and new surfaces. (e) Overlap the existing pavement 1 in. to 1.5 in. when constructing longitudinal joints adjacent to existing asphalt pavements. (f) The initial longitudinal roller pass shall be on the uncompacted hot mat and 6 in. to 1 ft from the joint. The successive roller pass shall compact the overlapped material and the 6 in. to 1 ft material simultaneously. (g) Apply tack coat to joints as directed. Cut back the edge of the existing pavement for its full depth at transverse joints when placing a surface course, and apply tack coat material as directed. (h) Apply tack coat to all contact surfaces before placing the mix against curbs, gutters, headers, manholes, etc.
thank you for the information
Interesante, gracias por la información.
Nice job. Very informative.
Respected presentor, very informative video.One sugesstion though. Can you also include metric system when conversion as your viewers are from all over the globe.Kudos. Cheers!!!!
Well done Marshall!
He said “the white line indicates it was done properly” 🤔
White means busted agrigate!
ruclips.net/video/CrlVAJi988E/видео.html
ruclips.net/video/CrlVAJi988E/видео.html
You have to use the equipment at your disposal. Your method will work as well as long as you have adequate uniform coverage of a good product.
Thank for the video! This will be my job starting this season.
Congratulations. This is a very important job that normally gets very little credit. Take pride in your work and help make a great road. Send me a picture of your work. MKlinefelter@MDAsphalt.org
If you see white at the joint, that is material being pulverized from vibratory roller crushing aggregate that is over on existing cold mat, joint on first pass should be pinched in with most of the drum on the existing mat, then half drum with vibes on, breaking the mat down from the high side down, compacting when mat temp falls below 240 degrees F and finishing from the low side up when temp falls below 170 degrees F. Porous asphalt is not to be vibed static roll only usually with a max of 5 passes and be finished before temp hits 145 degrees F. then there's warm asphalt, total pain in the ass.
@@ks5739 Well whenever possible it's ideal to close at least of highway and run staggered pavers all hot lapped it is like one paver pass edge of shoulder to edge of shoulder. but when you cant like you said, last pass down the middle allows rakers and rollers to rake and roll cold joint, pushing traffic out on both outside lanes giving you enough room to do your job. Plus whether it's an invert or crown? the lanes are paved staggered from where those lanes will be striped you dont want the track line of vehicles running down the lane joints will unravel in a short time. Kyle what state are you in? and you do mostly commercial and industrial paving?
@@dennisbrown6502 Canada - parking lots, cul de sac, residential - never highway
Can you send this information too my number please man 9564017541
Agreed, that white is smashed aggregate so you no longer have 100% bitumen coverage on your aggregate and you have created a finer gradation.... two specs that have always been deemed critical design. Better solution is use a joint heater. Operating cost less than 10 cents per foot as per contractors.
If you pinch the join first, you have basically pushed the mix that needs to be in the join out. You can pinch the join later if required. I always pave a stone width over the join,. The crushed stone has shown in studies to provide better join and pavement life. It's less likely to absorb water as a open join, under compacted join, that can happen from pinching.
Thank you for this great information
GREAT video Marshall!
George Bartholomew Thank you George. I appreciate it.
Your video is broken at 5 seconds
Thank you. I am working on correcting it. You can start at the beginning by clicking on the time line.
Good video. I don’t work for an asphalt paving company but asphalt paving is part of our job and I butt heads a lot with others because they want to roll the joints first instead of 6 inches away from it
Their way will give you an ascetically pleasing joint, but it will not last as long as a joint that has more material forced into a confined area first and then compacted with the force of the roller exerted on the slightly raised area. Put on a hard hat and win your argument!!!
@@k80greendeamon Same as above ,I cringe when I see guys with 20 yrs experience rolling joints first.
How are you re-compacting the cold edge that is 4-6% less compacted as per AI? FAA says to cut off this edge, What density do you get on the cold edge by this method? The white line is just smashed aggregate that is not covered with bitumen. We supply a joint heater that allows you to re-heat and re-compact the cold edge, the cheapest way to get recompacted density on the cold edge
if its a cold joint? rolling 6 inches away will in most cases push mix over onto to cold mat, depending on factors, depth, vibrating, and tonnage of breakdown roller, i have seen most times if it does not pushes mix over joint, it will leave a drum edge line that wont roll out it will fold over, now are first breakdown rollers are pneumatic or rubber tire and rolled 6 inches from cold joint works perfectly.
Now factors making it a pain in the ass, is inspectors (State) not letting the roller operators do what they know, in over 40 years ive seen just about everything.
Hello Marshall, great video. The question is the densimeter by retrodispersion? I see that the result is 95% I imagine that corresponds to the laboratory. regards
Yes, Guillermo, they were using a Troxler 4640-B Surface Thin Layer Density Gauge for QC monitoring. The density acceptance parameters use only cores taken from the final roadway and maximum specific gravities from behind the paver samples. Looking at data from SMA jobs across MD, the average is in the 95+ % of MSG.
Thank you very much marshall. regards
go Baltimore
when will the bridge be completed does any one know
gotta love it
Dover Bridge Replacement Project: ruclips.net/video/Sx_724C-sTQ/видео.html
Hello Marshall, great video. Question is regarding drain - down. I'm not sure of what your state requirements are for SMA mix design; just wondering how the results of drain - down for fiber less SMA compares with conventional SMA. Did you have to modify your mix design to include more screenings to meet volumetric properties? Thanks in advance.
The state requirements are not different for SMA based upon production methods. The same criteria apply: MIX TOLERANCES PHYSICAL PROPERTIES VCA* Mix, % Less than VCAdrc VMA, % 18.0 min. VTM, % 3.5 Ndesign Gyrations 100 Draindown, % max 0.3 Stabilizer, by weight of total mix, % 0.2 - 0.4 *VCA - voids in coarse aggregate. The mix was not modified other than fibers were not used, Evotherm M1 was used and the production temperatures were reduced to approximately 285°F.
Great video Marshall, it was great meeting you!
And you too. I appreciate your efforts in keeping our country safe be being in the military and by helping make safe, durable, cost effective roads.