| 青混合料水稳定性均有一定程度的提高 |
| 添加时间：2018/9/10 17:12:32 浏览次数： |
| (1)添加抗剥落剂、水泥、消石灰、消石灰+水泥和石灰水浸泡这五种改善措施，对沥青混合料水稳定性均有一定程度的提高; (1) adding anti stripping agent, cement, quicklime, lime and cement and lime water to improve the water quality of asphalt mixture has improved to a certain extent, five improvement measures. (2)就对新拌沥青混合料的水稳定性改善效果而言，不同的改善措施均有最佳的剂量，且在各自的最佳剂量下，改善效果有如下关系:0.4%抗剥落剂＞消石灰+水泥替代85%矿粉＞水泥替代80%矿粉＞消石灰替代100%矿粉＞20%石灰水浸泡。 (2) the water stability of the new asphalt mixture effect, different improvement measures have the best dose, and the optimum dose in each of the following relationships, improve effect: 0.4% anti stripping agent, lime + cement slag cement instead of 80% instead of 85%, powder lime powder to replace 100% > > 20% lime water immersion. (3)随着沥青混合料老化，五种改善措施，效果均有不同程度的降低。相比预期达到的冻融劈裂强度比，添加0.4%的抗剥落剂的混合料在老化后的衰减最大，达24%;其他物理改善方案均有不同程度的降低，其中水泥+消石灰替代矿粉的改善措施，受沥青混合料老化的影响最小，下降仅为2.3%。 (3) with the aging of asphalt mixture and the five improvement measures, the effect of the asphalt mixture has been reduced in varying degrees. Compared with the expected freeze-thaw splitting strength ratio reaches 0.4%, the anti stripping agent mixture added up to 24% in maximum attenuation after aging; other physical improvement program to reduce to some extent, the improvement measures of cement lime + mineral powder, the aging of asphalt mixture is minimum, declined only 2.3%. (4)综合比较不同措施水稳定性改善效果及其经济性，推荐采用消石灰+水泥替代85%矿粉的措施来改善沥青混合料的长期水稳定性能。 (4) comprehensive comparison of different measures of water stability improvement effect and its economy, it is recommended to use lime and cement to replace 85% mineral powder measures to improve long-term performance of asphalt mixture. |
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