APE January 2022 | Page 30

SUB FEATURE
The sun , as described in the blog : “... the summer sun can cause heat damage . Heat can dry up the pavement and cause the materials in the aggregate to break down , resulting in cracks and other damage . Temperature changes that vary rapidly , like those in spring , can also wreak havoc on your pavement . The heat can melt snow , forming water — but if it ’ s cold again the next day , the water that just melted can freeze under the pavement ’ s surface , weakening the pavement ’ s sub-base or resulting in overexpansion . The easiest way to protect your pavement from extreme temperatures is to sealcoat it .”
And ground movement , as the blog delineated : “ The ground below us is continuously shifting , either due to seasonal conditions like frost and thaw or disasters like earthquakes and severe thunderstorms . When the ground moves , the asphalt ’ s gravel base will shift and put pressure on the asphalt ,
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