Title: Engineering Effect of Crushed Rock Revetment of Embankments with Asphalt and Concrete Pavements along the National Highway 214
Abstract: Asphalt and concrete pavements are the two essential pavements adopted in the headwaters along the National Highway 214(G214),where crushed rock revetment is applied widely,because the road is located in the warm discontinuous permafrost regions.In order to well understand the cooling effect of crushed rock revetment on the embankment with asphalt and concrete pavements,a testing field was established between K369+100 and K370+000 of the G214.More than two years data from the testing field show that the annual mean temperature at the slope surface declined significantly and the annual range reduced a lot.Cooling effect of crushed rock revetment was more and more significant from the embankment centre,the shoulders to the slope toes.For the road with east-west strike,it couldn't effectively reduce the ground temperature difference between both sides.For the asphalt pavement,it only slowed down the temperature rising of the roadbed.For the concrete pavement,the ground temperature rose very slightly.Two years after the road was finished,the settlements varied from 10 cm to 20 cm in both asphalt pavement and concrete pavement.The cumulative embankment deformation with asphalt pavement was a little more than that with concrete pavement.Owing to the different solar radiation,the settlement in the south part of an embankment was always larger than that in the north part.The result is expected to be applied to the highway construction in permafrost regions with asphalt and concrete pavements in the future.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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