PMID- 28335328
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201001
IS  - 2079-4991 (Print)
IS  - 2079-4991 (Electronic)
IS  - 2079-4991 (Linking)
VI  - 6
IP  - 11
DP  - 2016 Nov 4
TI  - Investigation of the Mechanical Properties and Microstructure of Graphene 
      Nanoplatelet-Cement Composite.
LID - 10.3390/nano6110200 [doi]
LID - 200
AB  - In this work, graphene nanoplatelets (GNPs) were dispersed uniformly in aqueous 
      solution using methylcellulose (MC) as a dispersing agent via ultrasonic 
      processing. Homogenous GNP suspensions were incorporated into the cement matrix 
      to investigate the effect of GNPs on the mechanical behavior of cement paste. The 
      optimum concentration ratio of GNPs to MC was confirmed as 1:7 by ultraviolet 
      visible spectroscopy (UV-Vis), and the optical microscope and transmission 
      electron microscopy (TEM) images displayed remarkable dispersing performance. The 
      GNP-cement composite exhibited better mechanical properties with the help of 
      surface-modified GNPs. The flexural strength of cement paste increased up to 
      15%-24% with 0.05 wt % GNPs (by weight of cement). Meanwhile, the compressive 
      strength of the GNP-cement composite increased up to 3%-8%. The X-ray diffraction 
      (XRD) and thermal analysis (TG/DTG) demonstrated that the GNPs could accelerate 
      the degree of hydration and increase the amount of hydration products, especially 
      at an early age. Meanwhile, the lower porosity and finer pore size distribution 
      of GNP-cement composite were detected by mercury intrusion porosimetry (MIP). In 
      addition, scanning electron microscope (SEM) analysis showed the introduction of 
      GNPs could impede the development of cracks and preserve the completeness of the 
      matrix through the plicate morphology and tortuous behavior of GNPs.
FAU - Wang, Baomin
AU  - Wang B
AD  - Institute of Building Materials, School of Civil Engineering, Dalian University 
      of Technology, Dalian 116024, China. wangbm@dlut.edu.cn.
FAU - Jiang, Ruishuang
AU  - Jiang R
AD  - Institute of Building Materials, School of Civil Engineering, Dalian University 
      of Technology, Dalian 116024, China. jiangruishuang@mail.dlut.edu.cn.
FAU - Wu, Zhenlin
AU  - Wu Z
AD  - School of Physics and Opto-electronic Engineering, Dalian University of 
      Technology, Dalian 116024, China. zhenlinwu@dlut.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20161104
PL  - Switzerland
TA  - Nanomaterials (Basel)
JT  - Nanomaterials (Basel, Switzerland)
JID - 101610216
PMC - PMC5245736
OTO - NOTNLM
OT  - cement paste
OT  - graphene nanoplatelets (GNPs)
OT  - mechanical properties
OT  - morphology
OT  - porosity
COIS- The authors declare no conflict of interest.
EDAT- 2016/01/01 00:00
MHDA- 2016/01/01 00:01
PMCR- 2016/11/04
CRDT- 2017/03/25 06:00
PHST- 2016/08/27 00:00 [received]
PHST- 2016/10/27 00:00 [revised]
PHST- 2016/10/28 00:00 [accepted]
PHST- 2017/03/25 06:00 [entrez]
PHST- 2016/01/01 00:00 [pubmed]
PHST- 2016/01/01 00:01 [medline]
PHST- 2016/11/04 00:00 [pmc-release]
AID - nano6110200 [pii]
AID - nanomaterials-06-00200 [pii]
AID - 10.3390/nano6110200 [doi]
PST - epublish
SO  - Nanomaterials (Basel). 2016 Nov 4;6(11):200. doi: 10.3390/nano6110200.