Comparative Test Analysis Of Material Properties Of Highway Roads In Seasonal Frozen Soil Areas

Highway pavement structure has many forms.At present,the most pavement structure of our country is cement concrete pavement and asphalt concrete pavement.The materials of embankment road pavement should also be selected in these two materials.However,both cement concrete pavement and asphalt concrete pavement,in the long-term use of the process have found a very prominent deterioration,which affect the comfort and safety of the vehicle,and later maintenance is difficult,the cost is relatively high.In order to solve the problems of traditional pavement materials,it is necessary to study the performance of different pavement materials.Relying on the Heilongjiang River levee project,contact existing research results of concrete,the performance comparison between ordinary concrete and carbon fiber reinforced concrete was carried out.The research means is a series of mechanical and durability test,including cube compression,flexural strength test,splitting tensile strength test,toughness test and impermeability,frost resistance test and so on.The results show that the performance of carbon fiber reinforced concrete is better than that of ordinary concrete,and the addition of carbon fiber can significantly improve the toughness and flexural strength of concrete,and also improve the durability.In this study,good toughness,low elastic modulus,high bending strength of the material is appropriate,and makes it more suitable as the crest of highway pavement in seasonal frozen soil area.In addition,the economic analysis of the material will be carried out to explore whether the economic performance of the material can affect its extensive application,which will play a very positive role in the construction of highway in seasonal frozen soil region.