ArticleACS omega2025
Obsidian: A Pioneering Natural Resource for Green, Fire-Resistant Composite Material Industries.
Article in ACS omega, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A cleaner production approach was employed to develop an innovative and eco-friendly, fire-resistant composite material that boasts exceptional mechanical performance and is capable of withstanding harsh conditions. Novel obsidian (OB) and metakaolin (MK) were individually mixed with NaOH at different ratios ranging from 8 to 12 wt %. Each material was subjected to only 80 °C, forming alkali-activated obsidian (AAOB) and metakaolin-based geopolymer (MKBG). Extensive analyses, including compressive strength, thermal conductivity, X-ray diffraction (XRD), X-ray fluorescence (XRF), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray (EDX) analysis, confirmed the performance of both AAOB and MKBG. The AAOB outshined MKBG in fire resistance and mechanical strength, boasting impressive compressive strengths of 36.5, 69, and 101 MPa, respectively at day one. In contrast, MKBG lagged behind, with compressive strengths of 9.1, 23.24, and 25.66 MPa under the same conditions. Furthermore, AAOB exhibited a significantly higher porosity (80%) at 1000 °C and a lower thermal conductivity of 0.193 W/mK, compared to MKBG, which possessed a lower porosity (33%) and higher thermal conductivity of 0.901 W/mK. The AAOB represents a significant leap in the green revolution for sustainable fire-resistant composite materials. Its versatility extends across various sectors, notably in ultrahigh-temperature industrial and construction applications.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.