We will introduce a case where the setting delay time of cement was predicted using pulse NMR.
We would like to introduce a case study conducted by Majelica Japan Co., Ltd., which experimentally demonstrated the feasibility of easily comparing setting times using pulse NMR. Two types of dispersions were prepared: one with water added to achieve 50wt% cement, and the other with a cement setting retardant added. The viscosity and relaxation time T1 of each were measured at 60°C. The dispersion with the setting retardant showed an initial viscosity in the low shear region that was about ten times greater, while the initial relaxation time was shorter for the dispersion containing only cement and water. [Experiment] - Two types of dispersions were prepared: one with water added to achieve 50wt% cement, and the other with a cement setting retardant added. - The viscosity and relaxation time T1 of each were measured at 60°C. *For more details, please refer to the PDF document or feel free to contact us.
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【Results】 ■ The dispersion with the added thickening agent had an initial viscosity in the low shear range that was about 10 times greater. ■ The initial relaxation time was shorter for the dispersion containing only cement and water. ■ In both dispersions, the relaxation time decreased over time. *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Our company was established with the cooperation of Mageleka, Inc. in the United States and Resonance Systems in Germany. We engage in the import and sales of analytical instruments, as well as the sales of analytical consumables, contract measurement services, technical consulting, and collaborative research. We believe it is a great joy to assist, even in a small way, with research and quality control, and we will think together with you as closely as possible as analysts, so please feel free to contact us with your requests.
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