Effect of Temperature on Shear Strength of Recycled Asphalt Shingles
Effect of Temperature on Shear Strength of Recycled Asphalt Shingles
复制标题
温度对再生沥青瓦剪切强度的影响
DOI：
10.3141/2349-07
复制
发表时间：
2013
影响因子：
1.7
通讯作者：
J. Tinjum
中科院分区：
文献类型：
--
作者：
A. Soleimanbeigi;T. Edil;J. Tinjum
研究了季节性温度变化对再生沥青瓦（RAS）抗剪强度的影响。对RAS：BA的压实混合物诱导5°C至35°C的典型田间温度。温度升高会降低RAS：BA混合料的抗剪强度，因此在设计中应考虑温度效应。压实RAS：BA混合物的摩擦角，但是，保持在范围内的路堤填料的稳定性。热循环引起的热预加载的混合物含有RAS，这种预加载反过来又增加了剪切强度。从这些结果来看，为了达到最佳的工程性能，建议在温暖的季节使用含有RAS的颗粒材料建造公路路基。在大体积结构性填料应用中使用RAS有助于提高道路基础设施的可持续性。
The effect of seasonal variations in field temperature on the shear strength of recycled asphalt shingles (RAS) improved by mixing with bottom ash (BA) was evaluated for their use as structural fill material in highway embankments. Typical field temperatures ranging from 5°C to 35°C were induced to compacted mixtures of RAS:BA. An increase in temperature reduced the shear strength of compacted mixtures of RAS:BA, and therefore temperature effects should be taken into consideration in design. The friction angle of compacted RAS:BA mixtures, however, remained within the range suitable for stability of embankment fills. Thermal cycling induced thermal preloading to the mixtures containing RAS; this preloading in turn increased shear strength. From these results, to achieve optimum engineering behavior, construction of highway embankments made with granular materials containing RAS is recommended during warm seasons. The use of RAS in high-volume structural fill applications can contribute to more sustainable roadway infrastructure.