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

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 CO 2 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, whichmore » might explain the improved bond strength of PC incorporating ANPs.« less
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [1]
  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)
Publication Date:
Report Number(s):
SAND-2015-11102J
Journal ID: ISSN 0143-7496; PII: S0143749617300015
Grant/Contract Number:
AC04-94AL85000; DEFE0009562
Type:
Accepted Manuscript
Journal Name:
International Journal of Adhesion and Adhesives
Additional Journal Information:
Journal Volume: 74; Journal Issue: C; Journal ID: ISSN 0143-7496
Publisher:
Elsevier
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE Office of Fossil Energy (FE); USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; polymer concrete; slant; shear test; bond strength; nanomaterials; Finite element analysis
OSTI Identifier:
1339286
Alternate Identifier(s):
OSTI ID: 1413773