| Since the reform and open policy, the first-class highway has passed through one in our country to grow out of nothing, from few development phase which to many, progresses by leaps and bounds. Along with our country national economy's fast development, the road infrastructural facilities' day-by-day expansion and consummates, the highway traffic has become one of our country transportation main forms. It is estimated that to 2010,"five vertical seven horizontal"the federal highway branch line completes basically is open to traffic. To 2015, the national federal highway branch line and the road main pivot shaft system completes completely, constructs take the highway as the main body highway transportation main skeleton. Large quantities of first-class highway completes is open to traffic alleviated our country traffic bottleneck's limit greatly, has drawn the national economy swift growth enormously.Along with road railway track in use's increase with period of revolution's extension, definitely will bring the highway maintenance resilience increase. In recent years, after many roads completed, the volume of traffic explosive growth, the vehicles large scale, the overload is been serious, influences and so on travel channel, caused the road surface to receive the stern test in the use process. After also many roads complete, is open to traffic soon, because cannot meet the vehicles general need, has had the early destruction, maintains the resilience to be getting bigger and bigger, to maintains technical the request to be also getting higher and higher. May estimate that our country highway construction by the construction primarily, will transfer the construction and the maintenance with emphasis develops simultaneously, then transforms for maintains primarily.And, in each kind of highway maintenance technology, the preventive maintenance obtained the universal attention. Slurry seal and Micro-Surfacing is preventive maintenance representative the technology, because of has the construction to be convenient, the environmental pollution is small, construction cost inexpensive and so on merits, but obtains the universal approval and the promotion.Slurry seal is with certain gradation stone chips or the granulated substance, the stone powder, the cement and the emulsified bitumen mixes up the pappy thin paste, spreads paving in the road surface, after the emulsion breaking, the bleeding, the evaporation, the solidification, forms a sealing course, its outward appearance similar asphaltic sands or the fine grain type asphalt concrete, can play to the road surface improves and restores the superficial function the role.Micro-Surfacing is one kind uses the high polymer to cause the emulsified bitumen modified bituminous pavement to lay the technology, its full title for polymer modification emulsified bitumen thin paste sealing course technology. This technology for is internationally recognized repairs plant diseases and so on path wheel rut, mild crack, prevents the road surface water harm, the improvement bituminous pavement surface function, enhances the road surface anti-slippery performance to be most effective, one of most economical methods.This article has carried on the emulsified bitumen and the aggregate base values experiment separately to Slurry seal and Micro-Surfacing blend, chooses the MS-3 gradation to carry on the synthesis gradation the determination. Through mixed up the experiment to determine the sur- water volume, and has carried on the cohesive force determination, and shouldered the round fat sand experiment through the wet wheel wearing test to determine the modification emulsified bitumen amount used, obtained Slurry seal and Micro-Surfacing blend best mixture compound proportion. |
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