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Article
Materials Science, Ceramics
Chunyang Lu et al.
Summary: This study investigates the effect of organic strong alkali as activators on the mechanical properties of fly ash geopolymer, finding that a new mixture alkali activator can improve the density and integrity of the microstructure, leading to enhanced mechanical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Qi Sun et al.
Summary: The use of tailings, waste rock, fly ash, and slag to prepare geopolymer concrete effectively solves the problems of resource occupation, low utilization rate, and environmental pollution. This study analyzed the performance change and microstructure of geopolymer concrete prepared using different corrosion solutions. The predicted service life of the concrete was also determined. The test results showed that an increase in the number of dry-wet cycles resulted in the crystallization, cracking, and spalling of the concrete surface, and the strength exhibited a trend of first increasing and then decreasing. Cl- inhibited the corrosion of the concrete and improved its durability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Rashmi Shrivas et al.
Summary: This study examines the usability of MSW rejected waste as a geopolymer binder by replacing it with GGBFS. The results showed that increasing the percentage of GGBFS and concentration of NaOH can improve the strength of the geopolymer.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Construction & Building Technology
Zhijie Huang et al.
Summary: This study investigates the dynamic compressive and splitting tensile properties of ambient-cured geopolymer concrete (GPC) using split Hopkinson pressure bar (SHPB). The results show that ambient-cured GPC exhibits strain rate sensitivity, with the dynamic increase factor (DIF) increasing with strain rate. The specific energy absorption of ambient-cured GPC under dynamic compression increases linearly with strain rate.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Zhi-hang Wang et al.
Summary: This study investigated the effects of different nano-material doping on the static and dynamic properties of concrete. The results showed that doping with nano-CaCO3 increased both the strength and elastic modulus of concrete, while doping with nano-SiO2 decreased the strength but increased the elastic modulus. Under dynamic load, doping with nano-CaCO3 significantly improved the dynamic performance of concrete, while doping with nano-SiO2 decreased the dynamic performance. Furthermore, doping with nano-CaCO3 improved the compactness and pore structure of concrete.
SCIENTIFIC REPORTS
(2022)
Article
Green & Sustainable Science & Technology
Jyotirmoy Mishra et al.
Summary: This paper evaluates the feasibility of developing open-air cured geopolymer concrete using ferrochrome ash and ground granulated blast furnace slag. The results show that a mixture consisting of 80% ferrochrome ash and 20% ground granulated blast furnace slag provides a compressive strength suitable for general construction works. Additionally, it requires less embodied energy and produces less carbon dioxide emissions compared to cement-based concrete of similar strength.
JOURNAL OF SUSTAINABLE METALLURGY
(2022)
Article
Engineering, Civil
M. S. Eisa et al.
Summary: Geopolymer concrete is a new environmentally friendly concrete that gains early strength at room temperature and continues to develop strength through heating. This study explores the potential of using metakaolin-based geopolymer concrete as a rigid pavement concrete slab material, and as an efficient alternative to conventional Portland cement concrete. The study found that geopolymer concrete exhibited comparable performance to Portland cement concrete, with higher rigidity and resistance to surface abrasion in fuel resistance tests.
INNOVATIVE INFRASTRUCTURE SOLUTIONS
(2022)
Article
Construction & Building Technology
Jianhe Xie et al.
Summary: Using recycled concrete aggregate to produce geopolymeric recycled aggregate concrete is an eco-friendly solution for handling construction and demolition waste. This study investigates the dynamic compressive behavior of GRAC and develops a new model to predict its dynamic increase factor.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Review
Construction & Building Technology
Shikun Chen et al.
Summary: This paper reviews the studies on the pore structure of geopolymers, focusing on its relationship with material performance and influencing factors. It provides general rules for optimizing the pore structure and performance of geopolymers, aiding in their rational design and application.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Jinyan Shi et al.
Summary: In this study, cenospheres were used to replace part of fly ash in order to prepare ultra-lightweight foamed geopolymer concrete. The results showed that the addition of cenospheres improved the fluidity, setting time, mechanical properties, and thermal insulation performance of the geopolymer foams. It also improved the pore structure and reduced the sorptivity and drying shrinkage of the UFGC samples.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Abhishek Sharma et al.
Summary: This paper discusses the potential of recycled fine powder as an activator in fly ash based geopolymer mortar. The results show that up to 30% substitution of recycled fine powder enhances the strength and durability properties of geopolymer mortar mixes. Microstructure analysis confirms the presence of calcium content in recycled fine powder provides additional gel with geopolymer matrix and densify the microstructure to enhance all properties of geopolymer mortar.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
S. Khalid et al.
Summary: This study attempts to replace cement with mineral admixtures like fly ash and GGBS, and enhance the properties of concrete by adding steel fibers and polypropylene fibers. The test results indicate that the combination of metakaolin and GGBS can be used to develop environmentally friendly geopolymer concrete.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Chemistry, Multidisciplinary
Zhong Xu et al.
Summary: This article investigates the mechanical properties and strengthening mechanism of fiber-reinforced coal gangue-based geopolymer concrete. The results show that fibers can significantly improve the splitting tensile strength, but not the compressive strength. Among the different types of fibers tested, steel fiber and polyester fiber have a better effect on the splitting tensile strength than basalt fiber.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Construction & Building Technology
Hongen Zhang et al.
Summary: This study investigated the workability and mechanical properties of ambient-cured fly ash geopolymer concrete containing different fibres. Steel fibre showed the most effective role in improving mechanical properties, while the combination of steel and recycled polypropylene fibres was found to be the most effective in enhancing toughness. There is a strong positive correlation between total toughness and stress at the limit of proportionality point.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Construction & Building Technology
Sk S. Hossain et al.
Summary: This study reviews the utilization of waste Rice husk ash (RHA) for cleaner production of geopolymer. The effects of RHA on key properties of geopolymer are discussed, with findings suggesting that the incorporation of a moderate amount of RHA can improve the performance of geopolymer, providing a sustainable and environmentally friendly pathway for the construction industry.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Construction & Building Technology
Dunwen Huang et al.
Summary: Alkali-activated binder (AAB) concrete is considered an environmentally friendly material with high strength and low carbon emissions, but its greater shrinkage compared to ordinary Portland cement (OPC) poses challenges for its engineering applications. Current research focuses on understanding the mechanisms and factors influencing AAB shrinkage, with limited predictive models available.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Environmental Sciences
Daisuke Kurokawa et al.
Summary: This study shows that increasing the aluminate phase content in clinker and using mineral admixtures can lead to an increase in waste utilization and a reduction in CO2 emissions in the Japanese cement industry. Based on the estimates, it is projected that these measures can significantly reduce CO2 emissions and increase waste utilization in the coming years.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2021)
Article
Chemistry, Physical
Agnieszka Baziak et al.
Summary: This paper aims to analyze the impact of hybrid fiber reinforcement on the properties of a lightweight geopolymer composite. Steel fibers and carbon fibers were used as reinforcement materials to improve compressive and bending strength. The results demonstrate that the addition of fibers enhances the mechanical properties of the composite, with the best performance achieved through hybrid reinforcement.
Article
Materials Science, Composites
V. Sathish Kumar et al.
Summary: The demand for sustainable concrete in the civil infrastructure industry is growing, with geopolymer concrete emerging as a sustainable alternative to reduce carbon footprint. Experimental investigations have shown that hybrid fibre reinforced TGPC has excellent durability performance.
JOURNAL OF COMPOSITES SCIENCE
(2021)
Article
Construction & Building Technology
Thong M. Pham et al.
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Proceedings Paper
Materials Science, Multidisciplinary
Sathishraj Mani et al.
MATERIALS TODAY-PROCEEDINGS
(2020)
Article
Materials Science, Multidisciplinary
M. Saeli et al.
Article
Materials Science, Multidisciplinary
Diegles Simoes de Toledo Pereira et al.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2018)
Article
Construction & Building Technology
C. Arenas et al.
CONSTRUCTION AND BUILDING MATERIALS
(2017)
