Experimental investigations of dynamic compressive properties of roller compacted concrete (RCC)
Experimental investigations of dynamic compressive properties of roller compacted concrete (RCC)
复制标题
碾压混凝土（RCC）动压性能试验研究
DOI：
10.1016/j.conbuildmat.2018.02.112
复制
发表时间：
2018-04
影响因子：
7.4
通讯作者：
X.H. Wang
中科院分区：
文献类型：
--
作者：
C. Wang;W.S. Chen;H. Hao;S.R. Zhang;R. Song;X.H. Wang
碾压混凝土（RCC）在水工、路面等大型工程中得到了广泛的应用。由于施工过程，与预拌混凝土相比，它具有一些独特的材料性能。碾压混凝土结构在其使用寿命期间可能会受到动荷载的作用。了解碾压混凝土材料的动态特性对于更好地分析和设计碾压混凝土结构至关重要。关于碾压混凝土动态压缩力学性能的研究文献非常有限。采用分离式霍普金森压杆（Split Hopkinson Pressure Bar， SHPB）研究了应变速率高达80/s时碾压混凝土的动态压缩特性。此外，为了研究尺寸对动力冲击试验的影响，制备了直径为50 mm、75 mm和100 mm的3种圆柱形碾压混凝土试件并进行了试验。比较了不同尺寸碾压混凝土试件在不同应变率下的破坏过程和破坏模式，以及不同应变率下的应力-应变曲线和试件的能量吸收能力。研究了碾压混凝土试样尺寸、骨料级配及层理面存在对碾压混凝土动力性能的影响。在试验结果的基础上，提出了碾压混凝土抗压强度动态增加因子的经验公式，用于预测不同应变速率下材料强度的增加。
Roller compacted concrete (RCC) has been widely used in large scale constructions such as hydraulic structures and pavement. Because of the construction process, it has some unique material properties as compared to the ready-mix concrete. Structures made of RCC might be subjected to dynamic loads during its service life. Understanding the dynamic material properties of RCC is essential for better analysis and design of RCC structures. The study on dynamic compressive mechanical properties of RCC is very limited in literature. In this study, dynamic compressive properties of RCC under the strain rate up to 80/s are investigated by using Split Hopkinson Pressure Bar (SHPB). In addition, to investigate the size effects on dynamic impact tests, three sizes of cylindrical RCC specimens with the diameters of 50 mm, 75 mm and 100 mm are prepared and tested. The failure processes and the failure modes of RCC specimens with different dimensions under different strain rates, as well as the stress–strain curves under different strain rates and the energy absorption capacities of the tested specimens are compared. The influences of the specimen size, aggregates grading, and the existence of bedding surface in RCC on its dynamic properties are investigated. Based on the testing results, empirical formulae of DIF (dynamic increase factor) for the RCC compressive strength are proposed to predict the enhancement of material strength at different strain rates.
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影响因子：
7.4
作者：
A. Mardani‐Aghabaglou;K. Ramyar
通讯作者：
A. Mardani‐Aghabaglou;K. Ramyar
影响因子：
3.8
作者：
P. Rossi;J. Mier;C. Boulay;F. Maou
通讯作者：
P. Rossi;J. Mier;C. Boulay;F. Maou
影响因子：
1.2
作者：
Yubin Lu
通讯作者：
Yubin Lu
DOI：
10.1061/(asce)0733-9445(1988)114:8(1804
发表时间：
1988-08-01
期刊：
JOURNAL OF STRUCTURAL ENGINEERING-ASCE
影响因子：
--
作者：
MANDER, JB;PRIESTLEY, MJN;PARK, R
通讯作者：
PARK, R
影响因子：
5.3
作者：
Y. Tai
通讯作者：
Y. Tai