Magnesia-bearing materials for challenging infrastructure and environment
Magnesia-bearing materials for challenging infrastructure and environment
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发表时间：
2016-09
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通讯作者：
A. Al-Tabbaa;F. Jin;Yun Bai;J. Qian;L. Mo
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作者：
A. Al-Tabbaa;F. Jin;Yun Bai;J. Qian;L. Mo
在自然资源有限、人口不断增长、污染加剧和气候不确定性的情况下，我们的基础设施和环境在应对低碳未来方面面临着前所未有的挑战。因此，适应和创新必须在应对未来预期的广泛复杂情景中发挥至关重要的作用。建筑材料需要发挥作用的环境将变得更加复杂和更具挑战性，因此需要对未来基础设施和环境最合适的材料进行根本性的重新评估，以应对这些挑战。本文重点介绍一类基于氧化镁 (MgO) 的新旧建筑材料。它们包括多种材料，从含有 MgO 作为少量添加剂的材料到仅由 MgO 组成的材料。它们包括以 MgO 作为膨胀添加剂的混凝土、透水混凝土、碱激活水泥、磷酸镁水泥、碳酸产品、用于地面改良的稳定添加剂、自修复添加剂、碳捕获和储存材料以及用于废物 105 和污染土地修复的粘合剂。这些材料和产品为一系列结构、岩土和环境应用提供了一系列技术和可持续性优势。本文重点介绍了含镁建筑材料的应用和优势。
Our infrastructure and environment face unprecedented challenges in addressing a low carbon future with limited natural resources, expanding population, increased pollution and climatic uncertainties. Adaptation and innovations must therefore play a vital role in addressing the anticipated wide ranging complex scenarios ahead. The environment in which construction materials will need to function will become far more complex and aggressive and hence a fundamental revaluation of the most appropriate materials for future infrastructure and environment will be required in order to tackle those challenges. This paper focuses on a class of construction materials, both old and new, based on magnesia (MgO). They include a wide range of materials from those that contain MgO as a small additive to those which solely consist of MgO. They include concrete with MgO as an expansive additive, pervious concrete, alkali-activated cements, magnesium phosphate cements, carbonated products, stabilising additives for ground improvement, self-healing additives, carbon capture and storagematerials and binders for waste 105 and contaminated land remediation. Those materials and products offer a range of technical and sustainability benefits for a range of structural, geotechnical and environmental applications. The paper highlights the applications and benefits that would be achieved with magnesia-bearing construction materials.