Tarmac

Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Tarmac shopping experience:

1. Compare - without doubt the biggest advantage that the Tarmac offers shoppers today is the ability to compare thousands of Tarmac at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.

2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about

3. Testimonials - don't know anybody that has bought a Tarmac? Wrong! If the Tarmac is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.

4. Questions - Got a question about Tarmac then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....

5. Reputation - Never heard of the company selling Tarmac? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Tarmac and build up a picture of their reputation for sales, returns, customer service, delivery etc.

6. Returns - still worried that even after all of the above your Tarmac wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Tarmac then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Tarmac site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Tarmac, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Tarmac, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.

Tarmac (short for tarmacadam, a portmanteau for tar-penetration macadam) is a type of pavement (roads). Strictly speaking, Tarmac refers to a material patented by E. Purnell Hooley in 1901. The term is also used, with varying degrees of correctness, for a variety of other materials, including tar-grouted macadam, Tarvia, bituminous surface treatments and even modern asphalt concrete.

Origins Macadamized roads were adequate for use by horses and carriages or coaches, but they were very dusty, subject to erosion with heavy rain and did not hold up to higher speed motor vehicle use. Methods to stabilize macadam roads with tar date back to at least 1834, when Henry Cassell patented "Pitch Macadam". This method involved spreading tar on the subgrade, then placing a typical macadam layer and then sealing the macadam with a mixture of tar and sand. Tar-grouted macadam was also in use well before 1900, and involved scarifying the surface of an existing macadam pavement, spreading tar and re-compacting. Hooley's patent for Tarmac involved mechanically mixing tar and aggregate prior to lay-down, and then compacting the mixture with a steamroller. The tar was modified with the addition of small amounts of Portland cement, resin and pitch (resin) .

Later developments As petroleum production increased, the byproduct asphalt became available in huge quantities and largely supplanted tar due to its reduced temperature sensitivity. The Macadam construction process also became quickly obsolete due to its high manual labour requirement; however, the somewhat similar tar and chip method, also known as pavement (material) (BST), remains popular.

While the specific Tarmac pavement is not common in some countries today, many people use the word to refer to generic paved areas at airports, especially the airport ramp or "apron", near the airport terminal despite the fact that many of these areas are in fact made of concrete. This term seems to have been popularized when it became part of the news lexicon following live coverage of the Operation Entebbe in 1976, where "Tarmac" was frequently used by the on-scene BBC reporter in describing the hijack scene. The Wick Airport at Wick, Caithness in Caithness, Scotland is one of the few airports that still has a real Tarmac runway.

Patents

Hooley, E. Purnell, , "Apparatus for the preparation of tar macadam", July 26, 1904.