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纤维素纳米晶改性水泥混合物的性能与微观结构研究

An Investigation into the Properties and Microstructure of Cement Mixtures Modified with Cellulose Nanocrystal.

作者信息

Flores Jessica, Kamali Mahsa, Ghahremaninezhad Ali

机构信息

Department of Civil, Architectural and Environmental Engineering, University of Miami, Coral Gables, FL 33146, USA.

出版信息

Materials (Basel). 2017 May 4;10(5):498. doi: 10.3390/ma10050498.

DOI:10.3390/ma10050498
PMID:28772857
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5459080/
Abstract

This paper aims to examine the effect of cellulose nanocrystals (CNC) on the hydration, transport behavior, and microstructure of cement mixtures. The addition of CNC delayed hydration at an early age but improved hydration at later ages. A small increase in the electrical resistivity of the cement mixtures with CNC was observed. Statistical nanoindentation showed a small tendency to a larger volume fraction of high density calcium-silicate-hydrate (C-S-H) and a smaller volume fraction of low-density C-S-H in the mixture with CNC.

摘要

本文旨在研究纤维素纳米晶体(CNC)对水泥混合物的水化、传输行为和微观结构的影响。CNC的添加在早期延缓了水化,但在后期改善了水化。观察到添加CNC的水泥混合物的电阻率略有增加。统计纳米压痕显示,在含有CNC的混合物中,高密度硅酸钙水合物(C-S-H)的体积分数有略微增大的趋势,而低密度C-S-H的体积分数有减小的趋势。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/7df3d54efb5b/materials-10-00498-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/f7e29fcc16e7/materials-10-00498-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/2f43b825cacb/materials-10-00498-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/ad39897ee102/materials-10-00498-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/0910c0aa745a/materials-10-00498-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/7c945cf06c33/materials-10-00498-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/d614e2fec8d1/materials-10-00498-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/a1bdef684fae/materials-10-00498-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/0af126d01c6e/materials-10-00498-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/7df3d54efb5b/materials-10-00498-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/f7e29fcc16e7/materials-10-00498-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/2f43b825cacb/materials-10-00498-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/ad39897ee102/materials-10-00498-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/0910c0aa745a/materials-10-00498-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/7c945cf06c33/materials-10-00498-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/d614e2fec8d1/materials-10-00498-g006a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/a1bdef684fae/materials-10-00498-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/0af126d01c6e/materials-10-00498-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/27b4/5459080/7df3d54efb5b/materials-10-00498-g009.jpg

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