The dynamic material properties of stabilised rammed earth materials using cement and calcium carbonate residue

IF 2.1 Q2 ENGINEERING, CIVIL International Journal of Protective Structures Pub Date : 2022-08-12 DOI:10.1177/20414196221119239

Ke-wei Liu, M. Walske, Minbo Zhou, Xihong Zhang

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引用次数: 1

Abstract

The use of rammed earth (RE) as a construction material has recently received renewed interest due to its sustainability characteristics and potential for low-cost construction. Modern RE includes the addition of a binder to increase its performance. The mechanical performance of stabilised RE particularly the dynamic material properties is still not well understood. During the design life, a structure could experience dynamic loading. It is necessary to properly understand the dynamic properties of stabilised RE for safe applications. In this study, the quasi-static and dynamic material properties of cement and calcium carbonate residue (CCR) stabilised RE are experimentally investigated. The failure of the stabilised RE under different loading rates is investigated. Dynamic increase effect on cement and CCR stabilised RE are studied. The unconfined uniaxial compressive strength (UCS), Young’s modulus of the two types of stabilised RE at different strain rates are quantified. Empirical formulae of dynamic increase factor are derived for engineering application.

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用水泥和碳酸钙渣稳定夯土材料的动态材料性能

由于其可持续性特点和低成本建筑的潜力，夯土（RE）作为建筑材料的使用最近重新引起了人们的兴趣。现代RE包括添加粘合剂以提高其性能。稳定稀土的机械性能，特别是动态材料性能，仍然没有得到很好的理解。在设计寿命期间，结构可能会经历动态载荷。为了安全应用，有必要正确理解稳定稀土的动态特性。在本研究中，对水泥和碳酸钙渣（CCR）稳定RE的准静态和动态材料性能进行了实验研究。研究了稳定稀土在不同加载速率下的失效。研究了水泥和CCR稳定稀土的动态增长效应。量化了两种类型的稳定RE在不同应变速率下的无侧限单轴抗压强度（UCS）和杨氏模量。推导了动力增长系数的经验公式，以供工程应用。

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来源期刊

International Journal of Protective Structures ENGINEERING, CIVIL-

CiteScore

4.30

自引率

25.00%

发文量