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Experimental Study on the Dynamic Mechanical Properties of Large-Diameter Mortar and Concrete Subjected to Cyclic Impact

التفاصيل البيبلوغرافية
العنوان: Experimental Study on the Dynamic Mechanical Properties of Large-Diameter Mortar and Concrete Subjected to Cyclic Impact
المؤلفون: Bi Sun, Yang Ping, Zhende Zhu, Zhijian Jiang, Nan Wu
المصدر: Shock and Vibration, Vol 2020 (2020)
بيانات النشر: Hindawi Limited, 2020.
سنة النشر: 2020
المجموعة: LCC:Physics
مصطلحات موضوعية: Physics, QC1-999
الوصف: Rock bursts are typically accompanied by multiple shocks. In order to explore the dynamic characteristics of filling materials in rock burst roadways, we employ the split Hopkinson pressure bar (SHPB) test to analyze the dynamic mechanical response of mortar and concrete under cyclical impact. The SHPB test results of the large-size specimen indicate the improvement in the waveform shape and the reduction in the wave dispersion via the application of the rubber sheet as the pulse shaper. Under cyclic impact, the peak stress and energy utilization ratio of mortar and concrete specimens were reduced, demonstrating obvious fatigue characteristics. The mortar peak stress and energy utilization ratio were observed to be sensitive to the impact times, while those of concrete were sensitive to impact pressure. The damage evolution of mortar and concrete exhibited very similar trends under the cyclic impact load, whereby the impact pressure had minimal effect on the damage evolution.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1070-9622
1875-9203
Relation: https://doaj.org/toc/1070-9622; https://doaj.org/toc/1875-9203
DOI: 10.1155/2020/8861197
URL الوصول: https://doaj.org/article/8093f7ef5e9f4b598ac20647a2f28867
رقم الأكسشن: edsdoj.8093f7ef5e9f4b598ac20647a2f28867
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:10709622
18759203
DOI:10.1155/2020/8861197