Study On The Water Damage Resistance Of Emulsified Asphalt Modified By Phenolic Resin

Based on a large number of domestic and foreign literatures,the paper analyzes the adhesion theory between asphalt and aggregate.According to the theory,combined with the current specifications at home and abroad,this paper proposed an improved device to test the adhesion performance of asphalt and aggregate.Through the combination of theory and experiment,studying the adhesion performance between phenolic resin modified emulsified asphalt and aggregates.In order to make the experimental study universal,two kinds of modifiers and three kinds of aggregates were used as experimental materials to study the water stability between modified emulsified asphalt and aggregates.According to the requirement in the specification test material properties of modified emulsified asphalt and aggregate,verifying whether conform to the requirements of the specification,comparing the performance change of emulsified asphalt before and after modification.It is concluded that the evaporation residue of phenolic resin modified emulsified asphalt high temperature stability performance enhancements and softening point improvements,at the same time,Plastic performance change is larger,especially substantial decrease in 15°C ductility.But the 901 building adhesive modified emulsified asphalt had no significant effect.The paper lists the basic theories of bond which are widely recognized by studier in the theoretical analysis.Analyzing the basic force types contained in each basic theory,and using the formula to calculate the basic force in the bonding surface,so as to achieve the purpose of quantifying the adhesion between the bonding surfaces.It is concluded that using the adhesion theory to analyze the cohesive force between the asphalt and aggregate are more appropriate.In view of the domestic and foreign standards,there are several of asphalt and aggregate adhesion test and asphalt mixture water stability test,but each test method has its advantages and disadvantages.Especially specifications boiled method in our country,there is difficult to distinguish the modified asphalt spalling hierarchies,as well as judging standard range is too big,artificial subjective factors serious impact on the test results and other issues.Based on the theory of interface energy and work of adhesion,then proposing to modify test apparatus with inverted immersion method.For further verification the excellent water stable performance of the phenolic resin modified emulsified asphalt,the chapter inspects adhesion performance of modified emulsified asphalt with inverted immersion method,adhesion work theory,freeze-thaw splitting test and water-boiling method,as the increase of modifier,the modified emulsified asphalt water stability is increasing.At last the paper analysis correlation between four kinds of test data using gray correlation theory in mathematical,verify the inverted immersion method and adhesion work theory test results are the feasible.Above mainly making a series of studies on phenolic resin modified emulsified asphalt water stability,and it is found that they have good modification effect.In order to further promote the use of the modified material,at the end of this paper,the mixture gradation setting of phenolic resin modified emulsified asphalt was studied and the properties of anti-sliding,wear-resisting and emulsion breaking time were discussed.Using the material in micro surfacing,paving test road and tracking survey,for the widespread application of phenolic resin modified emulsified asphalt to provide valuable reference basis,it is hoped that it can provide valuable reference for the wide application of phenolic resin modified emulsified asphalt.