二灰稳定冷再生沥青混合料收缩特性试验研究

Test Study on Shrinkage Characteristics of Lime-flyash Stabilized & Cold Recycling Asphalt Mixture

二灰稳定冷再生沥青混合料作为道路基层,其抗裂性能尤为重要。通过二灰稳定冷再生沥青混合料的干缩试验分析,并与其他半刚性材料相比,二灰稳定冷再生混合料的干缩特性与相应稳定剂稳定的砂砾土相似。通过温缩试验分析,并与其他半刚性材料相比,二灰稳定冷再生混合料的温缩特性比水泥砂砾差,但优于石灰土及二灰土。

It is important for lime-flyash stabilized cold recycling asphalt mixture as road base to have cracking resistance.Through its dry cracking testing,it is concluded that,compared to other semi-rigid materials,the dry cracking behavior of such mixture is similar to that of sandy gravel stabilized by relevant stabilizer;through thermal cracking testing,it is concluded that,compared to other semi-rigid materials,the thermal cracking behavior of such mixture is inferior to cement gravel,but superior to lime soil and lime-flyash soil.