Topic
Geopolymer
About: Geopolymer is a research topic. Over the lifetime, 6776 publications have been published within this topic receiving 157991 citations. The topic is also known as: geopolymers.
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TL;DR: The performance of the CTAB-modified geopolymer based composites is superior to composites based on unmodified geopolemer hosts, the most effective composite containing 5wt% Cu2O/TiO2 in a CTABs modified geopolym host.
83 citations
TL;DR: In this paper, the effects of sodium hydroxide ratio, external heat amount, and partial Portland cement replacement on fly ash-based geopolymer concrete were investigated and the early compressive strength, density, absorption, and permeable voids were measured, and the microstructure of the fly-ash-based paste was observed and characterized.
83 citations
TL;DR: In this paper, the effect of nano-silica and silica fume (SF) on workability, setting time, compressive strength and microstructural properties of fly ash-ground granulated blast furnace slag (FA-GGBFS) based geopolymer concrete (GPC) is investigated.
Abstract: In this study, the effect of nano-silica (NS) and silica fume (SF) on workability, setting time, compressive strength and microstructural properties of fly ash-ground granulated blast furnace slag (FA-GGBFS) based geopolymer concrete (GPC) is investigated. Five mixtures of each containing 0.5%, 1.0%, 1.5%, 2.0% and 2.5% NS and SF are prepared for this investigation. The optimum GPC mixture with NS resulted in compressive strength of 63 MPa and the SF modified GPC achieved a compressive strength of 59.59 MPa after 28 days of outdoor temperature curing (Avg. temp. 31.4℃). The hardened concrete samples are analyzed through X-ray diffraction (XRD), X-ray fluorescence (XRF), field emission scanning electron microscope (FESEM), Fourier transform infrared spectroscopy (FTIR), and petrographic examination, for the better understanding of geopolymer mineralogy, mechanism and microstructure. Results indicate that both NS and SF facilitated a higher degree of geopolymerization, leading to the densification of the geopolymer matrix which led to the improvement of the properties of FA-GGBFS based GPC.
83 citations
TL;DR: In this paper, the impact of nano-CaCO3 on the mechanical properties of geopolymer composites was investigated based on three aspects: flexural and compressive strengths, impact strength, and hardness.
83 citations
TL;DR: In this paper, coal fly ash has been used in polycondensation processes aimed at the production of geopolymer-based low temperature ceramic bricks, showing favorable reactivity in any case.
83 citations