Microstructural Properties of Cement Paste and Mortar Modified by Low Cost Nanoplatelets Sourced from Natural Materials

Materials
Piao HuangZhongzi Xu

Abstract

Nanomaterials have been widely used in cement-based materials. Graphene has excellent properties for improving the durability of cement-based materials. Given its high production budget, it has limited its wide potential for application in the field of engineering. Hence, it is very meaningful to obtain low cost nanoplatelets from natural materials that can replace graphene nanoplatelets (GNPs) The purpose of this paper is to improve the resistance to chloride ion penetration by optimizing the pore structure of cement-based materials, and another point is to reduce investment costs. The results illustrated that low cost CaCO₃ nanoplatelets (CCNPs) were successfully obtained under alkali treatment of seashell powder, and the chloride ion permeability of cement-based materials significantly decreased by 15.7% compared to that of the control samples when CCNPs were incorporated. Furthermore, the compressive strength of cement pastes at the age of 28 days increased by 37.9% than that of the plain sample. Improvement of performance of cement-based materials can be partly attributed to the refinement of the pore structure. In addition, AFM was employed to characterize the nanoplatelet thickness of CCNPs and the pore structures of the...Continue Reading

References

Oct 30, 2003·Waste Management·Gil-Lim YoonSang-Hun Han
Jul 21, 2006·Nature·Sasha StankovichRodney S Ruoff
Jul 27, 2007·Nature·Dmitriy A DikinRodney S Ruoff
Aug 14, 2010·Advanced Materials·Yanwu ZhuRodney S Ruoff
Sep 11, 2010·Advanced Materials·Owen C ComptonSonBinh T Nguyen
Oct 23, 2012·Journal of the Mechanical Behavior of Biomedical Materials·Ahmad Khayer DastjerdiFrancois Barthelat

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Citations

Nov 2, 2019·Materials·Karla P Bautista-GutierrezSergio A Zamora-Castro

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Methods Mentioned

BETA
X-ray
AFM

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