气相纳米二氧化硅对超高性能混凝土弹道性能的影响

Influence of Fumed Nanosilica on Ballistic Performance of UHPCs.

作者信息

Markusík David, Bocian Luboš, Novotný Radoslav, Palovčík Jakub, Hrbáčová Markéta

机构信息

Faculty of Chemistry, Brno University of Technology, Purkyňova 464/118, 612 00 Brno, Czech Republic.

出版信息

Materials (Basel). 2023 Mar 7;16(6):2151. doi: 10.3390/ma16062151.

DOI:10.3390/ma16062151

PMID:36984030

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10052983/

Abstract

This research delves into the potential use of fumed nanosilica in ultra-high performance concrete for ballistic protection. First, the mechanical properties, slump flow, and specific gravity of UHPC with different contents of Aerosil 200 were determined. Then, calorimetric studies were conducted on these cement composites. Lastly, the differential efficiency factor and spalling area of UHPC with fumed nanosilica were determined. It was found out that the slump flow, the mechanical properties, and differential efficiency factor are slightly decreased by the addition of fumed nanosilica. However, the addition of the fumed nanosilica is beneficial in terms of the spalling area decrease and it is highly reactive during the induction period. Some of the results are supported by BSEM imaging.

摘要

本研究深入探讨了气相纳米二氧化硅在用于防弹保护的超高性能混凝土中的潜在用途。首先，测定了含有不同含量Aerosil 200的超高性能混凝土的力学性能、坍落流动度和比重。然后，对这些水泥基复合材料进行了量热研究。最后，测定了含有气相纳米二氧化硅的超高性能混凝土的微分效率因子和剥落面积。结果发现，添加气相纳米二氧化硅会使坍落流动度、力学性能和微分效率因子略有降低。然而，添加气相纳米二氧化硅有利于减小剥落面积，并且在诱导期具有高反应活性。部分结果得到了背散射电子显微镜成像的支持。