The effects of Graphene Oxide flakes on the mechanical properties of cement mortar

다국어 초록 (Multilingual Abstract)

This paper discusses a study of cement mortar reinforced with Graphene Oxide (GO) flakes carried out at the University of Plymouth. Over 60 specimens were prepared and tested to obtain the tensile, compressive and flexural strengths of cement mortar with/without 0.5% GO flakes by weight of cement. The dispersion of the GO flakes and the effect of the use of polycarboxylate ether superplasticizer (0.2% by weight of cement) on the material strength are discussed. Images of the particle sizes of GO are presented from the transmission electron microscopy analysis. In addition, the images from the field emission scanning electron microscope analysis are also presented to show the difference of the microscopic structure of cement mortar with/without GO. The results of the strength tests are presented. It is shown that the inclusion of the GO flakes in general led to positive results, which suggest that GO improved the tensile, compressive and flexural strengths of cement mortar.

참고문헌 (Reference)

1 Lv, S., "Use of graphene oxide nanosheets to regulate the microstructure of hardened cement paste to increase its strength and toughness" 16 (16): 8508-8516, 2014

2 Le, J.L., "Use of 2D Graphene Nanoplatelets (GNP) in cement composites for structural health evaluation" 67 : 555-563, 2014

3 Gong, K., "Reinforcing effects of Graphene Oxide on portland cement paste" 27 (27): 1-6, 2014

4 Babak, F., "Preparation and mechanical properties of graphene oxide: cement nano composites" 1-10, 2014

5 Horszczaruk, E., "Nanocomposite of cement/ graphene oxide-Impact on hydration kinetics and Young's modulus" 78 : 234-242, 2015

6 Chuah, S., "Nano reinforced cement and concrete composites and new perspective from graphene oxide" 73 : 113-124, 2014

7 Pan, Z., "Mechanical properties and microstructure of a graphene oxidecement composite" 58 : 140-147, 2015

8 Sedaghat, A., "Investigation of physical properties of Graphene-Cement composite for structural applications" 4 : 12-21, 2014

9 Wang, Q., "Influence of graphene oxide additions on the microstructure and mechanical strength of cement" 30 (30): 349-356, 2015

10 Du, H., "Improvement in concrete resistance against water and chloride ingress by adding graphene nanoplatelet" 83 : 114-123, 2016

11 Du, H., "Enhancement of barrier properties of cement mortar with graphene nanoplatelet" 76 : 10-19, 2015

12 Lv, S., "Effect of graphene oxide nanosheets of microstructure and mechanical properties of cement composites" 49 : 121-127, 2013

13 Lv, S., "Effect of GO nanosheets on shapes of cement hydration crystals and their formation process" 64 : 231-239, 2014

14 American Society for Testing Materials Standards, "C307-03 Standard Test Method for Tensile Strength of Chemical Resistant Mortar and Monolithic Surfacings"

15 British Standards Institution, "BS EN 196-1:2005 Methods of Testing Cement-Part 1: Determination of Strength"

16 Lu, S.N., "Applications of nanostrcutred carbon materials in constructions: the state of the art" 2015 : 1-10, 2015