GGBFSP增强乳化沥青冷再生混合料性能与应用研究OA
On Performance and Application of the GGBFSP-Reinforced Emulsified Asphalt Cold Recycled Mixture
为改善乳化沥青冷再生混合料的力学性能和路用性能,在乳化沥青冷再生混合料中掺入不同质量分数(1%～5%)的粒化高炉矿渣粉(GGBFSP),采用力学性能试验、路用性能试验及核磁共振(NMR)试验分析了 GGBFSP对乳化沥青冷再生混合料力学性能和路用性能增强作用及微细观孔隙结构影响.结果表明:掺加GGBFSP可有效提升乳化沥青冷再生混合料力学强度,随着 GGBFSP掺入比增加,乳化沥青冷再生混合料劈裂强度、无侧限抗压强度和贯入剪切强度均先提高后降低,最佳方案的 GGBFSP掺入质量分数为 3%;掺加3%GGBFSP后,普通乳化沥青冷再生混合料的动稳定度增大至 7 949次/mm,车辙深度由 2.468 mm降低至1.936 mm,抗冻融循环耐久性能显著增强.
To improve the mechanical properties and road performance of emulsified asphalt cold recycled mixtures,granulated ground blast furnace slag powder(GGBFSP)was incorporated into the mixtures at different mass fractions(1%-5%).Mechanical tests,road performance evaluations,and nuclear magnetic resonance(NMR)experiments were conducted to analyze the enhancement effects of GGBFSP on mechanical and road performance,as well as its influence on micro-and meso-scale pore structures.The results show that:adding GGBFSP effectively enhances the mechanical strength of the mixture.With increasing GGBFSP content,the splitting strength,unconfined compressive strength,and indentation shear strength all first increase and then decrease,with the optimal GGBFSP addition being 3%by mass.After incorporating 3%GGBFSP,the dynamic stability of the conventional emulsified asphalt cold recycled mixture increases to 7 949 cycles/mm,the rut depth decreases from 2.468 mm to 1.936 mm,and the durability under freeze-thaw cycles is significantly improved.
李剑
中铁十八局集团第五工程有限公司,山东 枣庄 100024
交通工程
高速公路冷再生混合料掺量方案比选孔隙结构路用性能稳定性耐久性
highwaycold recycled mixturedosagescheme comparisonpore structureroad performancestabilitydurability
《路基工程》 2026 (2)
187-193,7
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