期刊
CEMENT & CONCRETE COMPOSITES
卷 73, 期 -, 页码 29-41出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2016.06.018
关键词
Phase change materials (PCMs); Microstructure; Dispersion; Pore structure; Compressive strength; Finite element analysis
资金
- National Science Foundation [CMMI: 1130028]
- Ira A. Fulton Schools of Engineering at Arizona State University (ASU)
- Security and Defense Systems Initiative (SDSI) at ASU
- Scientific and Technological Research Council of Turkey
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1130028] Funding Source: National Science Foundation
Phase Change Materials (PCMs) incorporated into cementitious systems have been well-studied with respect to energy efficiency of building envelopes. New applications of PCMs in infrastructural concrete, e.g., for mitigating early-age cracking and freeze-and-thaw induced damage, have been proposed. Hence this paper develops a detailed understanding of the characteristics of cementitious systems containing two different microencapsulated PCMs. The PCMs are evaluated using thermal analysis, vibrational (FTIR) spectroscopy, and electron microscopy, and their dispersion in cement pastes is quantified using X-ray Computed Microtomography (mu CT). The influences of PCMs on cement hydration and pore structure are evaluated. The compressive strength of mortars containing PCMs is noted to be strongly dependent on the encapsulation properties. Finite element simulations carried out on cementitious microstructures are used to assess the influence of interface properties and inter-inclusion interactions. The outcomes provide insights on methods to tailor the component phase properties and PCM volume fraction so as to achieve desirable performance. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据