Effects of nanoparticle on the dynamic behaviors of recycled aggregate concrete under impact loading
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- 作者：Wengui Lia ; c ; d ; wengui.li@uts.edu.au" class="auth_mail" title="E-mail the corresponding author ; Zhiyu Luob ; Chu Longb ; Chengqing Wua ; Wen Hui Duanc ; Surendra P. Shahd
- 关键词：Recycled aggregate concrete (RAC) ; Nanoparticles ; Split Hopkinson pressure bar (SHPB) ; Impact loading ; Dynamic increase factor (DIF)
- 刊名：Materials & Design
- 出版年：2016
- 出版时间：15 December 2016
- 年：2016
- 卷：112
- 期：Complete
- 页码：58-66
- 全文大小：1836 K
文摘
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Nano-SiO2 and nano-CaCO3 modified recycled aggregate concrete (RAC) exhibit higher dynamic compressive strength compared to the control RAC.
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Nanoparticles can reduce the strain rate sensitive of cement mortar in RAC, and then decrease the dynamic increase factor.
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Compared to nano-CaCO3, nano-SiO2 more effectively improves the dynamic compressive strength of RAC, but less obviously enhances the deformation capacity.
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