Preparation, characterization of highly dispersed reduced graphene oxide/epoxy resin and its application in alkali-activated slag composites

2020 ◽  
Vol 105 ◽  
pp. 103424 ◽  
Author(s):  
Siyao Guo ◽  
Yu Lu ◽  
Xiaomei Wan ◽  
Fei Wu ◽  
Tiejun Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Epoxy Resin ◽  
Reduced Graphene Oxide ◽  
Alkali Activated Slag ◽  
Reduced Graphene ◽  
Highly Dispersed ◽  
Activated Slag ◽  
Alkali Activated

scholarly journals Investigation of Graphene Derivatives on Electrical Properties of Alkali Activated Slag Composites

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4374
Author(s):  
Wu-Jian Long ◽  
Xuanhan Zhang ◽  
Biqin Dong ◽  
Yuan Fang ◽  
Tao-Hua Ye ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrical Properties ◽  
Mechanical Performance ◽  
Structural Defects ◽  
Alkali Activated Slag ◽  
Mechanical And Electrical Properties ◽  
Reduced Graphene ◽  
Graphene Derivatives ◽  
Activated Slag ◽  
Alkali Activated

Reduced graphene oxide (rGO) has been widely used to modify the mechanical performance of alkali activated slag composites (AASC); however, the mechanism is still unclear and the electrical properties of rGO reinforced AASC are unknown. Here, the rheological, mechanical, and electrical properties of the AASC containing rGO nanosheets (0, 0.1, 0.2, and 0.3 wt.%) are investigated. Results showed that rGO nanosheets addition can significantly improve the yield stress, plastic viscosity, thixotropy, and compressive strength of the AASC. The addition of 0.3 wt.% rGO nanosheets increased the stress, viscosity, thixotropy, and strength by 186.77 times, 3.68 times, 15.15 times, and 21.02%, respectively. As for electrical properties, the impedance of the AASC increased when the rGO content was less than 0.2 wt.% but decreased with the increasing dosage. In contrast, the dielectric constant and electrical conductivity of the AASC containing rGO nanosheets decreased and then increased, which can be attributed to the abundant interlayer water and the increasing structural defects as the storage sites for charge carriers, respectively. In addition, the effect of graphene oxide (GO) on the AASC is also studied and the results indicated that the agglomeration of GO nanosheets largely inhibited the application of it in the AASC, even with a small dosage.

Synthesis and characterization of reduced graphene oxide by cobalt oxide composite electrode

2020 ◽  
Author(s):  
S. Veeresh ◽  
H. Ganesh ◽  
Y. S. Nagaraj ◽  
M. Vandana ◽  
S. P. Ashokkumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cobalt Oxide ◽  
Composite Electrode ◽  
Synthesis And Characterization ◽  
Oxide Composite ◽  
Reduced Graphene

Characterization of alkali-activated slag paste containing dredged marine sediment

2016 ◽  
Vol 57 (51) ◽  
pp. 24688-24696 ◽  
Author(s):  
Jae-Ho Shim ◽  
Joo-Young Jeong ◽  
Jin-Young Park ◽  
Jin-Suk Ryu ◽  
Joo-Yang Park
Keyword(s):  
Marine Sediment ◽  
Alkali Activated Slag ◽  
Dredged Marine Sediment ◽  
Activated Slag ◽  
Alkali Activated
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