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Because the concrete will expand and the tar will become soft. So the concrete has room to expand. With out cracking.
What else can I help you with?
How tar is useful in concrete roads?
Because the concrete will expand and the tar will become soft. So the concrete has room to expand. With out cracking.
Why are there channels filled with tar at intervals across cement-concrete roads?
Where cracks form in the asphalt/concrete, repair crews fill the cracks with tar to keep water from seeping in and widening the cracks into pot holes.
something black and gooey for fixing roads?
tar
What often causes pothpoles in streets?
Potholes are holes created in the road due to various stresses. On tar roads, the tar can expand and contract considerably during the summer and the winter. As a result of this constant contraction and expansion, parts of the road can erode away. During the winter, ice can also form in the pores in the tar road and the freezing of the ice expands the road slightly. Over days, weeks, and months of exposure to such stresses, tar roads break away at weak points and form potholes. Continued driving and application of the weight of multiple cars and trucks can also facilitate the road's destruction. The same can occur on concrete roads, although not as often as on tar roads.
Is tar in cigrattes the same as tar on the roads?
yes it is. it is one of many substances in a cigarette.
What is a sentence for tar?
if we take one cigarette. You get this much Tar.
When were tar roads first made?
In 1824, people first used tar on road construction. It was occurred in Paris, where people place tar blocks on Champs-ÌälysÌ©es of Paris. The modern tar roads are result from two Scottish engineers.
What is the best types of materials for country roads?
Tar
Concrete roads why do they have gaps?
concrete compared to human strength is very strong but with so many cars,bikes,people ect. it can easily crack to stop this happening they but black tar under and on the sides so its is stronger and less likely to crack.
Who invented the tar road?
John Loudon McAdam, a Scottish road building expert, is credited with being the first to build tar surfaced roads. That is why they are called macadam roads.
Are there concrete roads in Washington state?
No the roads are made out of asphalt.
How are mirrors useful on roads?
how are mirrors useful ? how are mirrors useful ?
