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

被引：13

作者：

Douba, A. ^{[1
]}

Genedy, M. ^{[1
]}

Matteo, E. N. ^{[2
]}

Kandil, U. F. ^{[3
]}

Stormont, J. ^{[1
]}

Taha, M. M. Reda ^{[1
]}

机构：

[1] Univ New Mexico, Dept Civil Engn, MSC01 1070,1 Univ New Mexico, Albuquerque, NM 87131 USA

[2] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA

[3] Egyptian Petr Res Inst, Polymer Nanocomposite Ctr, Cairo 11727, Egypt

来源：

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2017年 / 74卷

关键词：

Polymer concrete; Slant; Shear test; Bond strength; Nanomaterials; Finite element analysis; CARBON NANOTUBES; MECHANICAL-PROPERTIES; EPOXY ADHESIVE; NANO-PARTICLES; NANOCOMPOSITES; PERFORMANCE; COMPOSITES; COATINGS; DELAMINATION; DURABILITY;

D O I：

10.1016/j.ijadhadh.2017.01.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

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.

引用

页码：77 / 85

页数：9

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