【摘 要】
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This paper presents results from the analysis of the first 48 hours of the hydration of three high-volume blended BFS-PC systems.This work has been carried out on the I11 beamline of the Diamond Light
【机 构】
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Immobilisation Science Laboratory, Department of Materials Science and Engineering, Sir Robert Hadfi
【出 处】
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The 14th International Congress on the Chemistry of Cement (
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This paper presents results from the analysis of the first 48 hours of the hydration of three high-volume blended BFS-PC systems.This work has been carried out on the I11 beamline of the Diamond Light Source, UK, and is a novel experiment paving the way for a long duration study at the same facility.The application of the partial or no known crystal structure (PONKCS) methodology to a reacting cementitious system with a dominant amorphous content in the cementitious constituent is demonstrated, enabling accurate phase quantification with no internal reference standard.We describe the data acquisition methodology, and the refinement technique developed with a view towards producing quantitative information regarding the phase composition of the material as a function of time during the early stages of reaction.The formation of common crystalline hydrate phases such as portlandite and ettringite is observed, along with the generation of amorphous hydrate components within the system.The consumption of clinker and slag phases, and the reaction of gypsum and anhydrite present within the cement powder, are monitored with unparalleled temporal and angular resolution.
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