Abstract
A hybrid model, comprised of analytical and phenomenological models, was developed to quantify the effective free water diffusion coefficient of cement hydration with superabsorbent polymers (SAP) as internal curing. NMR/MRI measurements were used to estimate the water types and distribution, and the cement degree of hydration. Employing reverse engineering, the estimated temporal free water distribution in cement hydration with SAP was reproduced using 1-D finite element transient flow model and a tortuosity model. The computed free water diffusion coefficient and effective diffusion length of cement paste with 0.2% and 0.3% SAP is 5.48 × 10−12 m2/s and 4.46 × 10−12 m2/s, and 0.25 mm and 0.19 mm, respectively. The computed efficacy of SAP dropped by 8% and 27%, for 0.2% and 0.3% SAP content respectively, when accounting for particles agglomeration.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
