In situ monitoring of the hydration of calcium silicate minerals in cement with a remote fiber-optic Raman probe

Zhang, Bohong; Liao, Wenyu; Huang, Jie

doi:10.1016/j.cemconcomp.2023.105214

Cited by 6 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Challenges exist in implementing this technique directly into industry applications, particularly for immersing into molten materials due to apparatus limitations. Optical fiber sensors have found extensive and effective applications across various sensing domains, including structural health monitoring, chemical and biological sensing, and environmental monitoring [7][8][9][10][11]. Their compactness, small size, and low weight make them well-suited for enhancing or combining traditional technologies.…”

Section: Introductionmentioning

confidence: 99%

Development of an immersion fiber optic Raman probe for real-time analysis of molten materials

Zhang,

Tekle,

O'Malley

et al. 2024

Optical Waveguide and Laser Sensors III

View full text Add to dashboard Cite

This study presents an advancement in high-temperature Raman spectroscopy, specifically for analyzing molten materials. It introduces an approach by integrating a fiber-optic Raman probe with a copper block protection system designed to endure extreme thermal conditions. The copper block features an open port designed to accommodate an external telescope with a 3 cm focal length, enabling Raman spectra collection in challenging high-temperature environments. A built-in gas channel ensures a continuous flow of argon gas to prevent flux intrusion. The robust copper block acts as a reliable shield, safeguarding the fiber-optic Raman probe within molten materials. This enhancement maintains the probe's integrity and significantly improves its resilience, making it ideal for rigorous investigations of molten substances. This advancement is particularly relevant in metallurgy, where flux materials impact production quality and efficiency. The ability to acquire Raman signals under elevated thermal conditions offers opportunities for studying molecular dynamics, compositional changes, and chemical interactions within molten substances. This introduced direct immersion probing technique has implications, benefiting both scientific and industrial fields. It holds promise for advancing research and exploration in various contexts, from fundamental scientific inquiries to practical applications in metallurgical processes, where flux materials are critical for optimizing production quality and efficiency. This approach enhances the capabilities of high-temperature Raman spectroscopy, making it a valuable tool for investigating molten materials and their properties in diverse settings.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of an immersion fiber optic Raman probe for real-time analysis of molten materials

Zhang,

Tekle,

O'Malley

et al. 2024

Optical Waveguide and Laser Sensors III

View full text Add to dashboard Cite

show abstract

Study on the design method of multi-component industrial solid waste low carbon cementitious material with cement as the activator

Wang,

Li,

et al. 2024

Case Studies in Construction Materials

View full text Add to dashboard Cite

Enhancing aluminum casting efficiency through real-time optical fiber sensor monitoring at the metal-mold interface

Zhang,

Prakash-Hungund,

O'Malley

et al. 2024

Optical Waveguide and Laser Sensors III

View full text Add to dashboard Cite

This study focuses on the critical aspect of interfacial heat transfer during the solidification process in metal casting, aiming to optimize these manufacturing processes. Fiber-optic sensors were employed to provide continuous real-time monitoring of mold gaps and temperature profiles during the solidification of A356 aluminum in a permanent moldcasting environment. A specially designed mold system, constructed from unheated, uncoated tool steel, facilitated the seamless integration of these advanced fiber-optic sensors. One key technique used was the Extrinsic Fabry-Perot interferometric (EFPI) sensor, which uniquely utilized molten metal as the second reflection interface for measuring mold gaps. This method yielded impressively accurate results, with a maximum error of just 2 µm compared to physical measurements. Additionally, using the Rayleigh backscattering (RBS) technique, a stainless steel-encased fiber provided real-time temperature measurements with an impressive spatial resolution of 0.65 mm. The study demonstrates that combining high-resolution temperature profiles with gap evolution measurements significantly enhances our understanding of heat transfer dynamics at the mold-metal interface, proving particularly beneficial for optimizing complex-shaped castings and continuous casting processes. Furthermore, the capability to monitor the shape of the casting in real-time as it exits a continuous casting mold introduces a novel tool for quality control and process safety improvement by early detection of conditions that might lead to slab cracking and breakouts, ultimately enhancing overall process efficiency and reliability.

show abstract

In situ monitoring of the hydration of calcium silicate minerals in cement with a remote fiber-optic Raman probe

Cited by 6 publications

References 57 publications

Development of an immersion fiber optic Raman probe for real-time analysis of molten materials

Development of an immersion fiber optic Raman probe for real-time analysis of molten materials

Study on the design method of multi-component industrial solid waste low carbon cementitious material with cement as the activator

Enhancing aluminum casting efficiency through real-time optical fiber sensor monitoring at the metal-mold interface

Contact Info

Product

Resources

About