National Bitumen in Gold Coast, Queensland | Paving & asphalt service

National Bitumen

Locality: Gold Coast, Queensland

Phone: +61 431 657 021

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25.01.2022 If your needing advice or prices on materials call us your local bitumen people we can supply everything you need for your road or driveway

23.01.2022 Call 0431657021 Answers to common questions about road surface, asphalt, bitumen, pavement What is chip sealing (spray sealing in Australia)? In Australia chip ...sealing is referred to as a "sprayed seal" or "tar seal" and is used on a larger percentage of roads, both rural and urban. It is cheaper than surfacing in an asphaltic concrete pavement, Chip seals are constructed by evenly distributing a thin base of hot bitumen or bitumen Emulsion onto an existing pavement and then embedding finely graded aggregate into it. The aggregate is evenly distributed over the chip seal, and then rolled into an even surface. Two functions are served by the chip seal firstly to seal surface of the road then to provide a wear surface with the chippings (Aggregate). The introduction of polymer-modified (Plastics) in bitumen and emulsion binder has increased the chip seals ability to prevent crack reflection and improve stone retention by improving the properties of the bitumen binder. Newer techniques use bitumen emulsion (a mixture of liquid bitumen, surfactant, and water) instead of hot sprayed pure bitumen. This has been shown to help reduce emissions of volatile organic compounds (VOCs) due to the lower solvent content generally required. What is Hot Mix Asphalt (common term) or Asphaltic Concrete AC? This is a manufactured product made with much the same type of ingredients as Concrete except bitumen is used to bind the mixture together instead of cement. A blend of aggregates (crushed rock), sands and fillers are passed through a heating drum to completely dry them and raise the temperature to around 160C adding hot bitumen in the process. There are many types of mixes for various types of applications. The most commonly used mixes are 14mm, 10mm and 7mm, referring to the largest aggregate in the mix. 14mm and 10mm are typically used on roads, 10mm and 7mm on car parks, driveways and sport courts etc. The thickness the hot mix is laid depends on the traffic loading it will be subjected to. Typically a car park is 30mm thick for lighter vehicles..More about bitumen arrow What is Bitumen? The most commonly used bitumen is petroleum Refined Bitumen. This is the residual (bottom) fraction obtained by fractional distillation of crude oil. It is the heaviest fraction and the one with the highest boiling point at 525C. Bitumen is a mixture of organic liquids that are highly viscous, black, sticky; entirely soluble in volatiles such as kerosene. What is hot spray bitumen? Bitumen is produced in a variety of grades varying from hard and brittle to soft and fluid, at normal temperatures. Many or these grades are solid like butter. To make bitumen liquid it has to be heated from between 160C - 220C so it can be pumped and sprayed for chip sealing for example. To temporarily reduce the viscosity cutter oils are added i.e. Kerosene, also to aide adhesion of stone and wetting of subases. What is Tar? A term in road surfacing carried over from the past when Tar derived from coal was used for surface binder instead of todays petroleum bitumen no longer broadly used mainly due to its toxicity while heated. Confusing as most road work signage in Australia will display the classic Tar spraying in progress sign when in reality it is either bitumen or bitumen Emulsion being sprayed. What is Bitumen Emulsion? A dispersion of bitumen in water achieved by the use of suitable chemical emulsifying agents while being forced through a colloidal mil (Homogeniser) providing a shearing action. The emulsified bitumen microscopic droplets may be anionic (negative charge slow setting), cationic (positive charge fast setting) or non-ionic (neutral). Polymer Modified Bitumen Emulsions. By the addition of polymers to the emulsifying process, when deposited in the binder film thus improving the Binder to achieve good elasticity and tenacity characteristics encourage a strong bond between binder and chippings. This permits the use of emulsions on highly stressed sights where good chipping retention is essential. Emulsions can and are being further developed to play an ever important role in an energy and environmentally conscious age. Polymer Modified Bitumen Emulsions. By the addition of polymers to the bitumen emulsion, the deposited binder film has good elasticity and tenacity characteristics encouraging a strong bond between binder and chippings. This permits the use of emulsions on highly stressed sights where good chipping retention is essential. Emulsions can and are being further developed to play an ever important role in an energy and environmentally conscious age. Aggregate or Chippings Broad terms for coarse particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete. Aggregates are a component of composite materials such as concrete and asphaltic concrete; the aggregate serves as reinforcement to add strength to the overall composite material. For chip sealing the aggregate provides the wear surface it can be coated with a bonding agent to aid adhesion. More about Aggregate arrow Spray Seal (Chip seal) Design Method for determining the rate of application of bitumen or bitumen emulsion and aggregate (chips) to a given surface. Factors such as traffic volume, heavy or light vehicles, speed of traffic and condition of the surface are assessed. The aggregate (Chips) test report is also important as this provides a factor called Average Least Dimension which means the average height of the stone when placed on a flat surface. For example a good quality 14mm aggregate will have an ALD of around 9.4mm. This factor is important as it plays a role in determine the volume of bitumen or emulsion required. The various State Government Road Authorities have standards that these products must meet.

22.01.2022 National Bitumen 0431657021

21.01.2022 Putting down k1 prima

18.01.2022 Call us your local company we offer old fashioned service with modern technology so what ever your needs from the driveway to the highway we have you covered

18.01.2022 Call us your local team for all your bitumen needs

16.01.2022 Thinking of getting a new driveway call us for a free quoteThinking of getting a new driveway call us for a free quote

16.01.2022 Call national bitumen for all your driveway roads and car parking needs from major roads to pot wholes we have you covered 0431657021

16.01.2022 We want to wish use all a happy xmass and a happy and healthy new year from the team at national bitumenWe want to wish use all a happy xmass and a happy and healthy new year from the team at national bitumen

15.01.2022 First coat of a two coat polymer modified bitumen bitumen seal

14.01.2022 This is a driveway we finished today

13.01.2022 Absolutely awesome job guys its the second time Ive used you guys and couldnt be happier with the result you are definitely great at what you guys do

11.01.2022 Putting down another two coat bitumen seal more videos to follow but the views are fantastic

09.01.2022 Recently I got my driveway done with national bitumen, I have a very steep winding driveway and I have had 3 different quotes from reputable companies that sim...ply asked way to much because of the difficulty of the job. National bitumen attentively quoted a price that was very reasonable and what a standard 3000 metre driveway would have cost normally and they were very capable of structuring the job to the difficulty of the driveway, The professionalism and timeliness from the quote to the completion of the job, I was highly satisfied with. I can’t praise national bitumen enough for what they have done for my family and I, they have also done both my side neighbours houses, which they were also more than satisfied with, with the work performed and price. I am more than happy with the outcome and would highly recommend national bitumen to anyone I know for great quality work, professionalism and all round satisfaction See more

07.01.2022 Watch the progress of this this road

06.01.2022 Recycled concrete with polymer This is a great option for your driveway or road lasts a lifetime looks great and very affordable compared to normal concrete driveways

04.01.2022 Final trim and compacted

01.01.2022 Call us for all your road& driveway needs