Research and Application of the First Case of Wear Resistant Steel Slag SM-13 Asphalt Pavement in Shanxi Province
Through to the Shanxi Province first case of wear resistant steel slag asphalt pavement engineering application,analyzes the steel slag application background and the necessity,advantages and disadvantages,the main research contents,key technical problems,through the above analysis shows that compared with the traditional wearing layer,using steel slag asphalt concrete road with the per-formance of the new features:The water damage resistance,high temperature rutting resistance,fatigue resistance and low temperature cracking resistance of the mixture are improved.According to the 6.4%ratio of oil to stone mixing asphalt mixture testing indicators:the dynamic stability of 6 713 times/mm,more than the design value of 4 000 times/mm;The mean value of the residual stability in water immersion is 90.2%,which is 85%higher than the design value.The freeze-thaw fracture strength ratio is 86.3%,which is more than 80%of the design value.According to the engineering entity,the compactness of the pavement made by the general con-struction equipment can meet the standard,and the actual residual void rate on the site can be controlled below 6.0%,which can a-chieve the purpose of wear resistance.
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