The significance of nanoparticles on bond strength of polymer concrete to steel

Journal Article · Tue Jan 03 00:00:00 EST 2017 · International Journal of Adhesion and Adhesives

DOI:https://doi.org/10.1016/j.ijadhadh.2017.01.001· OSTI ID:1339286

Douba, A. ^[1]; Genedy, M. ^[1]; Matteo, E. N. ^[2]; Kandil, U. F. ^[3]; Stormont, J. ^[1]; Reda Taha, M. M. ^[1]

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1. Univ. of New Mexico, Albuquerque, NM (United States)
2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
3. Egyptian Petroleum Research Institute, Cairo (Egypt)

Here, polymer concrete (PC) is a commonly used material in construction due to its improved durability and good bond strength to steel substrate. PC has been suggested as a repair and seal material to restore the bond between the cement annulus and the steel casing in wells that penetrate formations under consideration for CO₂ sequestration. Nanoparticles including Multi-Walled Carbon Nano Tubes (MWCNTs), Aluminum Nanoparticles (ANPs) and Silica Nano particles (SNPs) were added to an epoxy-based PC to examine how the nanoparticles affect the bond strength of PC to a steel substrate. Slant shear tests were used to determine the bond strength of PC incorporating nanomaterials to steel; results reveal that PC incorporating nanomaterials has an improved bond strength to steel substrate compared with neat PC. In particular, ANPs improve the bond strength by 51% over neat PC. Local shear stresses, extracted from Finite Element (FE) analysis of the slant shear test, were found to be as much as twice the apparent/average shear/bond strength. These results suggest that the impact of nanomaterials is higher than that shown by the apparent strength. Fourier Transform Infrared (FTIR) measurements of epoxy with and without nanomaterials showed ANPs to influence curing of epoxy, which might explain the improved bond strength of PC incorporating ANPs.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Fossil Energy (FE); USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000; DEFE0009562
• OSTI ID: 1339286
• Alternate ID(s): OSTI ID: 1413773
• Report Number(s): SAND-2015-11102J; PII: S0143749617300015
• Journal Information: International Journal of Adhesion and Adhesives, Vol. 74, Issue C; ISSN 0143-7496
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
polymer concrete
slant
shear test
bond strength
nanomaterials
Finite element analysis