【摘要】 研究不同陈化时间对钢渣沥青混凝土长期浸水体积膨胀特性和力学性能衰减规律，并通过现场铺筑试验段进一步检验钢渣沥青混凝土的耐久性。结果表明：钢渣新渣安定性差，混渣严重，且白渣含量高。钢渣破碎后堆放陈化处理应不少于1年，其安定性可按压蒸粉化率≤5%控制。钢渣新渣应通过洒水保湿加速游离氧化钙消解，钢渣沥青混凝土体积稳定性应按60℃浸水7 d体积膨胀率≤1.5%控制。经过有效陈化处理后，钢渣集料体积膨胀对钢渣沥青混凝土长期水稳定性和使用性能影响较小，不会造成早期水损害和结构失稳问题。更多还原

【Abstract】 This paper studied the effect of different aging time on the volume expansion and mechanical reduction of steel slag asphalt concrete under long-term immersion. Test section was paved to further evaluate the durability of steel slag asphalt concrete pavement. The test results indicated that fresh steel slag had poor stability and blended with different kinds of slag. The content of white slag was high. The aging treatment should not be less than 1 y after steel slag was crushed and stored. The volume stability could be controlled by the conversion rate smaller than 5% under autoclave test. Sprinkling water and moisturing should be performed on fresh steel slag to promote the hydration of free calcium oxide. The volume stability of steel slag asphalt concrete should be controlled by volume expansion rate less than 1.5% under 60 ℃ water immersion for 7 d. After effective aging treatment,the volume expansion had slight effects on the long-term water stability and service performance of asphalt concrete,which could not result in premature water damage and structure unstability.更多还原