期刊
CEMENT & CONCRETE COMPOSITES
卷 88, 期 -, 页码 73-85出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2018.02.001
关键词
Geopolymer; Fiber-reinforced composite; Design of experiment; Micromechanics; Material sustainability
资金
- National Science Foundation [CMMI 1068005]
Strain-hardening ductile fiber-reinforced geopolymer composite, named Engineered Geopolymer Composite (EGC), is a promising material for achieving green and durable civil infrastructure. Despite increasing attentions of the unique material, inefficient trial-and-error approaches are often employed in the material design, which slows the research and development. This paper proposed a new design methodology of EGC that integrates three design techniques: Design of Experiment (DOE), micro mechanical modeling, and Material Sustainability Indices (MSI). The mix design of a preliminary version of EGC was optimized to achieve higher compressive strength, maintain high tensile ductility, and enhance the material greenness simultaneously. With the aid of the systematic design process, an optimized EGC with improved compressive strength of 43.1 MPa and high tensile ductility of 4.7% was developed, while achieving 11% less embodied energy and 55% less CO2 equivalent emissions compared with a standard Engineered Cementitious Composite (ECC). Therefore, the applicability and effectiveness of the proposed design method were successfully demonstrated. (C) 2018 Elsevier Ltd. All rights reserved.
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