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Dynamic compressive properties of reactive powder concrete at high temperature: a review
Cement and Concrete Composites ( IF 10.8 ) Pub Date : 2020-02-24 , DOI: 10.1016/j.cemconcomp.2020.103568
Shaojun Cao , Xiaomeng Hou , Qin Rong

The dynamic performance of reactive powder concrete (RPC) has led to the corresponding rapid adoption from many industries. RPC exhibits ultra-high strength, improved energy absorption and ductility, proving to be an ideal material for high-energy dynamic load resistance, such as impacts and blasts. Recent studies have demonstrated the effect of strain rate on the mechanical response of RPC under dynamic compression through split Hopkinson pressure bar (SHPB) utilization. Dynamic increase factors for ultimate strength, modulus of elasticity, energy absorption, stress-strain models, as well as a variety of mechanical properties of RPC under compression have also been reported. In this paper, a review of these studies and an analysis of the presented data have been described. Overall, data from existing literatures have demonstrated that in the existing models, the effects of several factors, such as specimen size and fiber content, on the dynamic compressive performances of RPC have been ignored. Specifically, the existing models have limitations and cannot be widely utilized. To surpass these limitations, sufficient amounts of data were collected and through additional factor considerations, improved models with wide application range and higher accuracy have been proposed.



中文翻译:

活性粉末混凝土在高温下的动态压缩性能:综述

活性粉末混凝土(RPC)的动态性能已导致相应的迅速被许多行业采用。RPC具有超高强度,改善了能量吸收和延展性,被证明是抗高能量动态载荷(例如冲击和爆炸)的理想材料。最近的研究表明,通过分裂霍普金森压力杆(SHPB)的利用,在动态压缩下,应变速率对RPC力学响应的影响。也已经报道了极限强度,弹性模量,能量吸收,应力应变模型以及RPC压缩下的各种机械性能的动态增加因子。在本文中,已经描述了对这些研究的综述以及对所提供数据的分析。总体,现有文献的数据表明,在现有模型中,忽略了标本尺寸和纤维含量等多种因素对RPC动态压缩性能的影响。具体地,现有模型具有局限性,不能被广泛利用。为了克服这些限制,已收集了足够的数据,并通过考虑其他因素,提出了具有广泛应用范围和更高准确性的改进模型。

更新日期:2020-02-25
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