
Originally Posted by
kassi59 I asked my mom about the melting road thing as it was interesting to me. What her thought was that here in the states we use tar mixed with sand/stone type mixture that when the hot sun bears down,the tar will get hot but the extra in the mix allows it to keep its solidity.
One hundred thousand and fifty years ago when she was young - they used to harden the dirt roads, then spray moulting tar in about an eight foot spray across the dirt, and continue until the road had a layer of smooth tar across it...after it reached a certain thickness..it was flattened as such ... but due to the fact that they only used tar without any fillers, it would in fact on extremely hot days melt...
Forgive my inept way of explanation, thats why I never do public speaking and or teach the young!....lol