Šavija Branko
Microlab, Delft University of Technology, 2628 CN Delft, The Netherlands.
Materials (Basel). 2018 Apr 24;11(5):654. doi: 10.3390/ma11050654.
Cracks in concrete structures present a threat to their durability. Therefore, numerous research studies have been devoted to reducing concrete cracking. In recent years, a new approach has been proposed for controlling temperature related cracking—utilization of phase change materials (PCMs) in concrete. Through their ability to capture heat, PCMs can offset temperature changes and reduce gradients in concrete structures. Nevertheless, they can also influence concrete properties. This paper presents a comprehensive overview of the literature devoted to using PCMs to control temperature related cracking in concrete. First, types of PCMs and ways of incorporation in concrete are discussed. Then, possible uses of PCMs in concrete technology are discussed. Further, the influences of PCMs on concrete properties (fresh, hardened, durability) are discussed in detail. This is followed by a discussion of modelling techniques for PCM-concrete composites and their performance. Finally, a summary and the possible research directions for future work are given. This overview aims to assure the researchers and asset owners of the potential of this maturing technology and bring it one step closer to practical application.
混凝土结构中的裂缝对其耐久性构成威胁。因此，众多研究致力于减少混凝土裂缝。近年来，提出了一种控制温度相关裂缝的新方法——在混凝土中使用相变材料（PCM）。通过其蓄热能力，PCM可以抵消温度变化并降低混凝土结构中的温度梯度。然而，它们也会影响混凝土性能。本文全面概述了有关使用PCM控制混凝土温度相关裂缝的文献。首先，讨论了PCM的类型及其掺入混凝土的方式。然后，讨论了PCM在混凝土技术中的可能用途。此外，详细讨论了PCM对混凝土性能（新拌、硬化、耐久性）的影响。随后是对PCM-混凝土复合材料的建模技术及其性能的讨论。最后，给出了总结以及未来工作可能的研究方向。本概述旨在向研究人员和资产所有者确保这种成熟技术的潜力，并使其更接近实际应用。
