Evaluating Gyratory Compaction Characteristics of Unbound Permeable Aggregate Base Materials from Meso-Scale Particle Movement Measured by Smart Sensing Technology.
Evaluating Gyratory Compaction Characteristics of Unbound Permeable Aggregate Base Materials from Meso-Scale Particle Movement Measured by Smart Sensing Technology.
复制标题
通过智能传感技术测量的细观尺度颗粒运动评估未结合渗透性骨料基材的旋转压实特性
DOI：
10.3390/ma14154287
复制
发表时间：
2021-07-31
期刊：
影响因子：
--
通讯作者：
Chen X
中科院分区：
文献类型：
--
作者：
Xiao Y;Wang M;Wang X;Ren J;Wang W;Chen X
具有渗透性级配的松散骨料的压实质量在其现场性能中起着至关重要的作用;然而，目前几乎没有一致接受的技术或质量控制标准可用于确保在实验室或现场应用中充分压实此类材料。本文介绍了一个实验室的旋转压实研究的结果，其中旋转参数的组合，合理地设计了正交表理论。创新的实时颗粒运动传感器被用来记录颗粒在压实过程中的运动特性，并提供一个细观尺度上的压实机制的解释。颗粒磨损和破碎也从压实前后的三维（3D）激光扫描仪数字化的颗粒形状进行量化。根据正交试验结果确定了获得最佳压实性能的回转参数的最佳组合，并对主要影响参数的相对重要性进行了排序。细观尺度颗粒在试样中心上部和中心侧位置的运动是压实质量的有希望的指标。根据宏观性能指标和细观颗粒运动特征，旋转压实过程可分为三个不同的阶段。相对破碎指数和最大磨损深度之间存在统计上显著的双线性关系，而压实质量和颗粒破碎程度似乎呈正相关，因此需要在它们之间进行成本效益平衡。研究结果可为非结合透水性骨料的现场压实提供技术指导。
The quality of compaction of unbound aggregate materials with permeable gradation plays a vital role in their field performance; however, there are currently few unanimously accepted techniques or quality control criteria available for ensuring adequate compaction of such materials in either laboratory or field applications. This paper presented testing results of a laboratory gyratory compaction study where the combinations of gyratory parameters were properly designed using the orthogonal array theory. Innovative real-time particle motion sensors were employed to record particle movement characteristics during the compaction process and provide a meso-scale explanation about compaction mechanisms. Particle abrasion and breakage were also quantified from particle shape digitized from the three-dimensional (3D) laser scanner before and after compaction. The optimal combination of gyratory parameters that yields the best compaction performance was determined from the orthogonal testing results with the relative importance of major influencing parameters ranked accordingly. Meso-scale particle movement at the upper center and center side positions of the specimen are promising indicators of compaction quality. The gyratory compaction process can be consistently divided into three distinct stages according to both macro-scale performance indicators and meso-scale particle movement characteristics. A statistically significant bi-linear relationship was found to exist between relative breakage index and maximum abrasion depth, whereas the quality of compaction and the extent of particle breakage appear to be positively correlated, thus necessitating the cost-effective balance between them. The results of this study could provide technical insights and guidance to field compaction of unbound permeable aggregates.
登录
查看更多内容
DOI：
10.1061/(asce)mt.1943-5533.0001540
发表时间：
2017-03-01
影响因子：
3.2
作者：
Liu, Shushu;Huang, Hai;Gao, Liang
通讯作者：
Gao, Liang
DOI：
10.1061/(asce)0733-9410(1985)111:10(1177
发表时间：
1985-01-01
期刊：
JOURNAL OF GEOTECHNICAL ENGINEERING-ASCE
影响因子：
--
作者：
HARDIN, BO
通讯作者：
HARDIN, BO
影响因子：
3.7
作者：
Kumara, Janaka J.;Hayano, Kimitoshi
通讯作者：
Hayano, Kimitoshi
沥青混合料形成过程中粗集料运动的实验室研究
影响因子：
7.4
作者：
Guo, Hui;Zhao, Yongli;Shang, Min
通讯作者：
Shang, Min
基于形态的指数和建议的采样大小，用于使用基于图像的方法量化压实骨料的降解
影响因子：
7.4
作者：
Li, Cheng;Zheng, Junxing;Li, Jia
通讯作者：
Li, Jia