The influences of chemical treatment on recycled rejected fiber cement used as fillers in the fiber cement products
Keywords:
Chemical treatment, Recycling, Fiber cement, SustainableAbstract
Fiber cement products (FC) are globally used in the constructions of houses and commercial buildings. The recycling of rejected FC as fillers is an important way to contribute to a sustainable material flow. However, several negative effects regarding the extremely high water content from the FC forming (Hatschek process) and the limited reuse of rejected FC instead of natural fillers can be explained by the negative influences on setting and hardening behaviors of FC. Both mentioned inferiors significantly decrease the cement hydration mechanism, leading to remarkable reductions of set and hardened performances of FC. Hence, chemical treatment (CT) was applied to drive the hydration kinetic, and the properties achieved were characterized via the relevance of higher heat of hydration. Moreover, scanning electron microscope (SEM) was used to reveal the favorable effects of appropriate chemical and mineral additives through the microstructures of treated reject-FC.Downloads
References
B. J. Pirie, F. P. Glasser, C. Schmitt-Henco, and S. A. S. Akers, “Durability studies and characterization of the matrix and fibre-cement interface of asbestos-free fibre-cement products,” Cement and Concrete Composites, vol. 12, pp. 233-244, 1990.
W. Barbosa, R. D. Ramalho, and K. F. Portella, “Influence of gypsum fineness in the first hours of cement paste: Hydration kinetics and rheological behaviour,” Construction and Building Materials, vol. 184, pp. 304-310, 2018.
K. Matsui, J. Kikuma, M. Tsunashima, T. Ishikawa, S. Matsuno, A. Ogawa, and M. Sato, “In situ time-resolved X-ray diffraction of tobermorite formation in autoclaved aerated concrete: Influence of silica source reactivity and Al addition,” Cement and Concrete Research, vol. 41, pp. 510-519, 2011.
M. Chen, L. Lu, S. Wang, P. Zhao, W. Zhang, and S. Zhang, “Investigation on the formation of tobermorite in calcium silicate board and its influence factors under autoclaved curing,” Construction and Building Materials, vol. 143, pp. 280-288, 2017.
N. B. Winter, Understanding cement. United Kingdom: WHD Microanalysis Consultants, Ltd., 2012.
R. J. Kirkpartick, J. L. Yarger, P. F. McMillan, P. Yu, and X. Cong, “Raman spectroscopy of C-S-H, tobermorite, and jennite,” Advanced Cement Based Materials, vol. 5, pp. 93-99, 1997.
A. Akhavan, J. Catchmark, and F. Rajabipour, “Ductility enhancement of autoclaved cellulose fiber reinforced cement boards manufactured using a laboratory method simulating the Hatschek process,” Construction and Building Materials, vol. 135, pp. 251-259, 2017.
N. Meller, K. Kyritsis, and C. Hall, “The hydrothermal decomposition of calcium monosulfoaluminate 14-hydrate to katoite hydrogarnet and β-anhydrite: An in-situ synchrotron X-ray diffraction study,” Journal of Solid State Chemistry, vol. 182, pp. 2743- 2747, 2009.
N. B. Singh and B. Middendorf, “Calcium sulphate hemihydrate hydration leading to gypsum crystallization,” Progress in Crystal Growth and Characterization of Materials, vol. 53, pp. 57-77, 2007.
O. Fenyvesi and B. Jankus, “Opportunities in recycling AAC waste as aggregate for lightweight concrete,” Journal of Silicate Based and Composite Materials, vol. 67, pp. 66-70, 2015.
T. Suwan and P. Wattanachai, “Properties and Internal Curing of Concrete Containing Recycled Autoclaved Aerated Lightweight Concrete as Aggregate,” Advances in Materials Science and Engineering, vol. 2017, pp. 1-11, 2017.
E. I. Al-Wakeel, S. A. El-Korashy, S. A. ElHemaly, and N. Uossef, “Promotion effect of C-S-H-phase nuclei on building calcium silicate hydrate phases,” Cement and Concrete Composites, vol. 21, pp. 173-180, 1999.
J. J. Thomas, H. M. Jennings, and J. J. Chen, “Influence of Nucleation Seeding on the Hydration Mechanisms of Tricalcium Silicate and Cement,” The Journal of Physical Chemistry C, vol. 113, pp. 4327-4334, 2009.
M. H. Hubler, J. J. Thomas, and H. M. Jennings, “Influence of nucleation seeding on the hydration kinetics and compressive strength of alkali activated slag paste,” Cement and Concrete Research, vol. 41, pp. 842-846, 2011.
K. V. S. Gopala Krishna Sastry and P. M. Kumar, “Self-curing concrete with different self-curing agents,” in IOP Conference Series: Materials Science and Engineering, vol. 330, pp. 1039- 1045, 2018.
ASTM C186-05, Standard Test Method for Heat of Hydration of Hydraulic Cement, ASTM International, West Conshohocken, PA, 2005.
ASTM C114-07, Standard Test Methods for Chemical Analysis of Hydraulic Cement, ASTM International, West Conshohocken, PA, 2007.
G. Land and D. Stephan, “Controlling cement hydration with nanoparticles,” Cement and Concrete Composites, vol. 57, pp. 64-67, 2015.
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