Results 1 to 10 of about 7,568 (139)

Dynamic increase factor (DIF) for concrete in compression and tension in FE modelling with a local concrete model

International Journal of Impact Engineering, 2022
Abstract The dynamic increase factor (DIF) in the strength of concrete-like materials has been a subject of extensive investigation and debate for many years. It now tends to be generally accepted that the compression DIF as observed from standard sample tests is mainly attributable to the dynamic structural effect, whereas for concrete under tension
Li, Xiaoqin, Chen, Qianjun, Chen, Jian-Fei, Liao, Junzhi, Lu, Yong; id_orcid 0000-0002-2142-1299   +4 more
openaire   +3 more sources

A study on the dynamic mechanical properties of coral concrete reinforced with polypropylene and basalt fibers [PDF]

Scientific Reports
To clarify the strain-rate-dependent behavior of hybrid fiber-reinforced coral aggregate concrete, dynamic splitting tensile tests were conducted on specimens incorporating polypropylene fibers(PPF) and basalt fibers (BF) with varying lengths and volume ...
Zhongqing Li, Hao Ge, Taiping Kang, Wen Kang   +3 more
doaj   +2 more sources

Influence of bedding angles on dynamic properties of Yanchang shale and a DIF-based constitutive model [PDF]

Scientific Reports
As global conventional natural gas resources are increasingly depleted, shale gas, a key form of unconventional natural gas, has gained significant attention due to advancements in extraction technologies.
Weiqi Li, Shouchun Deng, Kun Jiang, Haibo Li   +3 more
doaj   +2 more sources

Experimental study on recycling rubber to increase the impact resistance of cement mortar [PDF]

Scientific Reports
The COVID-19 pandemic has led to a surge in medical waste generation, posing hazards to both the environment and global health. The impacts of the COVID-19 pandemic’s medical waste hazard may persist long after the pandemic itself subsides.
Tao Ran, Jianyong Pang, Di Wu
doaj   +2 more sources

Experimental investigation on dynamic compressive properties of SHCC after freeze-thaw cycles

Journal of Materials Research and Technology, 2023
In this paper, the split Hopkinson pressure bar (SHPB) test was used to investigate the variation of dynamic compressive properties of SHCC with various freeze-thaw (FT) cycles and strain rates.
Weina Guo, Yupeng Tian, Jiuwen Bao, Bing Wang, Dongyi Lei, Peng Zhang, Yifei Cui   +6 more
doaj   +1 more source

Effects of Different Strain Rates on the Impact Properties of Recycled Aggregate Concrete Modified With Nanosilica Solution and Polyvinyl Alcohol Fiber

Frontiers in Materials, 2021
The recycled aggregate (RA) was modified by 2% nanosilica solution, and the split Hopkinson pressure bar (SHPB) test device was used to study the dynamic impact properties of the modified recycled aggregate concrete (RAC) mixed with polyvinyl alcohol ...
Xingguo Wang, Xingguo Wang, Maolin Jiang, Xianggang Zhang, Xianggang Zhang, Xianggang Zhang, Zhaoxia Cheng, Jian Gong, Fei Cheng   +8 more
doaj   +1 more source

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Buildings, 2023
In this paper, research on dynamic behaviors of RC structural members was reviewed using experimental, theoretical and numerical perspectives. First, in a basic overview, measurement methods, main conclusions and current limitations of available dynamic ...
Rouhan Li, Mao Gao, Hongnan Li, Chao Li, Debin Wang   +4 more
doaj   +1 more source

Damage characterization and resilience optimization of reinforced concrete bridge piers under vehicle impact

Advances in Bridge Engineering, 2022
Vehicle impact creates a dynamic loading condition at high strain rate exhibiting a unique interaction with the resisting structural members’ material properties.
Suman Roy, Ikwulono D. Unobe, Andrew Sorensen   +2 more
doaj   +1 more source

Mechanical Characteristics and Stress and Strain Analysis of Concrete with Bonding Interface Under Impact Load

Shanghai Jiaotong Daxue xuebao, 2022
To study the dynamic mechanical characteristic of steam cured concrete and self-compacting concrete bonding interface, a split Hopkinson pressure bar (SHPB) test was used to evaluate the dynamic properties of concrete with a bonding interface.
ZHAO Hong, XIE Youjun, LONG Guangcheng, LI Ning, ZHANG Jiawei, CHENG Zhiqing
doaj   +1 more source

Dynamic Compression Behavior and a Damage Constitutive Model of Steel Fibre Reinforced Self-Compacting Concrete

Advances in Materials Science and Engineering, 2021
The dynamic behavior of steel fibre reinforced self-compacting concrete (SFRSCC) was investigated by using a split Hopkinson pressure bar (SHPB). SFRSCC specimens with two strength classes of about 40 MPa and 60 MPa were prepared.
Liang Bian, Jian Ma, Jie Zhang, Ping Li
doaj   +1 more source