An integrated design method of Engineered Geopolymer Composite

By Motohiro Ohno, Victor C. Li. 2018

219 citations recorded by the source corpus.

Abstract 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), micromechanical 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.

Subfields: Building and Construction, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/235c3143a65793dec22e2fd670e7a3a86e70291a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Building and Construction

1. Zhenming Li
2. Mingzhong Zhang
3. Guang Ye
4. Navid Ranjbar
5. M. Hadi
6. Shizhe Zhang
7. I. B. R. Widiarsa

In Civil and Structural Engineering

1. Zhenming Li
2. Mingzhong Zhang
3. Shizhe Zhang
4. S. Parkinson
5. Haiqiu Zhang
6. Suhong Yin
7. B. Ghiassi
8. Guang Ye

Citations in the corpus

• Fiber-reinforced geopolymer composites: A review (2020, methodology): “This continuous process results in formation of multiple microcracks and pseudo strain hardening if the material microstructure and associated microparameters controlling macroscopic behavior are carefully optimized according to the micromechanics-based material design theory [87, 89, 186, 187].”
• Fracture properties and microstructure formation of hardened alkali-activated slag/fly ash pastes (2021, methodology): “(1) using the peak load PMax [N] from the 3PB test while considering the specimen-related shape function, as has been widely used in previous studies and recommendations [11,13,14,27,28].”
• Optimum mix design of geopolymer pastes and concretes cured in ambient condition based on compressive strength, setting time and workability (2019, background): “Most of the studies that sought the optimum mix design of geopolymer materials were based on the 69 compressive strength alone [19-22].”