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首页> 外文会议>6th International RILEM Symposium on Performance Testing and Evaluation of Bituminous Materials, (PTEBM'03) Pt.1 Apr 14-16, 2003 Zurich, Switzerland >THE INFLUENCE OF AGGREGATE ON MOISTURE SUSCEPTIBILITY IN TERMS OF ASPHALT-AGGREGATE INTERACTIONS
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THE INFLUENCE OF AGGREGATE ON MOISTURE SUSCEPTIBILITY IN TERMS OF ASPHALT-AGGREGATE INTERACTIONS

机译：沥青-骨料相互作用中骨料对水分敏感性的影响

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Experiments were conducted to investigate the effects of water on asphalt-aggregate mixtures. Both neat and oxidatively aged asphalts were studied. Results have shown that the moisture susceptibility of a neat asphalt-aggregate system is both asphalt source and aggregate source dependent. Highly siliceous aggregates tend to form mixtures that are susceptible to water damage no matter which asphalt they are combined with. In the systems reported here, oxidative aging improves resistance to water stripping, even in mixes of siliceous aggregates. It can be concluded that the chemical composition of both asphalt and aggregates are important for bond formation at asphalt-aggregate interfaces and for resistance of the bonds to water attack. In addition, the results suggest that polar additives similar to those generated during oxidative aging may prove to be effective anti-strip agents. The results also suggest that recycled pavement may have an advantage regarding resistance to water action. Asphalt-water-aggregate interactions depend mainly on the affinity between components of the binder, water, and the surfaces of aggregates.
机译：进行实验以研究水对沥青-骨料混合物的影响。研究了纯沥青和氧化老化沥青。结果表明，纯净的沥青-骨料体系的水分敏感性既取决于沥青源又取决于骨料源。高度硅质的骨料往往形成混合物，无论与哪种沥青混合使用，都容易受到水的破坏。在此处报道的系统中，即使在含硅骨料的混合物中，氧化老化也可以提高抗水汽能力。可以得出结论，沥青和骨料两者的化学组成对于在沥青-骨料界面处形成键以及使键耐水侵蚀是重要的。另外，结果表明与氧化老化过程中产生的极性添加剂相似的极性添加剂可能被证明是有效的抗剥离剂。结果还表明，再生路面在抗水作用方面可能具有优势。沥青与水-骨料的相互作用主要取决于粘合剂，水和骨料表面之间的亲和力。

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