concretetoconcrete bond strength influence of an epoxy

Concrete-to-concrete bond strength: influence of an epoxy ...

Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface E. N. B. S. Ju´lio*, F. A. B. Branco† and V. D. Silva* University of Coimbra, Portugal; Technical University of Lisbon, Portugal An experimental study was performed to evaluate the bond strength between two concrete layers, using ...

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Concrete-to-concrete bond strength: influence of an epoxy ...

May 25, 2015  Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface E. N. B. S. Júlio, F. A. B. Branco and V. D. Silva 150th ANNIVERSARY ESSAY COMPETITION.

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Concrete-to-concrete bond strength: Influence of an epoxy ...

Concrete-to-concrete bond strength: Influence of an epoxy-based bonding agent on a roughened substrate surface January 2005 Magazine of Concrete Research 57(8):463-468

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Concrete-to-concrete bond strength: influence of an epoxy ...

May 25, 2015  Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface E. N. B. S. Júlio, F. A. B. Branco and V. D. Silva Preparation of metallographic specimens for electron backscatter diffraction

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Concrete-to-concrete bond strength. Influence of the ...

Nov 01, 2004  Concrete-to-concrete bond strength. Influence of the roughness of the substrate surface ... with an epoxy resin, to the surface of the core. A tension force was applied to the disc, with a commercial device at a steady rate of 0.05 MPa/s, until failure occurred.

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Influence of lightweight aggregates concrete on the bond ...

Both compressive strength and flexural toughness influence interface bonding performance. a b s t r a c t An aqueous epoxy resin with four different dosages was employed to enhance ordinary ...

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Concrete-to-concrete bond strength: influence of an epoxy ...

Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface E. N. B. S. Júlio, F. A. B. Branco and V. D. Silva DISCUSSION.

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Concrete-to-concrete bond strength: influence of an epoxy ...

An experimental study was performed to evaluate the bond strength between two concrete layers, using different techniques for increasing the roughness of the substrate surface and a commercial epox...

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Influence of added concrete compressive strength on ...

Dec 01, 2006  Júlio ES, Branco F, Silva VD. Concrete-to-concrete bond strength. Influence of an epoxy-based bonding agent on a roughened substrate surface, Thomas Telford. Magazine of Concrete Research 2005. (to be published in V. 57)

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Effect of surface preparation and bonding agent on the ...

Dec 01, 2012  Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface Mag Concr Res , 57 ( 8 ) ( 2005 ) , pp. 463 - 468 CrossRef View Record in Scopus Google Scholar

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Laboratory Investigation on the Interface Bond Strength ...

SST was used to evaluate the bond strength in shear of epoxy based resins. er,Howev a prismatic version was adopted to study the bond strength of concrete-to-concrete interfaces. Two different failure mechanisms can occur on a SST: i) cohe-sive or monolithic failure and

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Influence of lightweight aggregates concrete on the bond ...

Both compressive strength and flexural toughness influence interface bonding performance. a b s t r a c t An aqueous epoxy resin with four different dosages was employed to enhance ordinary ...

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(PDF) Longitudinal Shear Strength between Two Concrete ...

Concrete-to-concrete bond strength: Influence of an epoxy-based bonding agent on a roughened substrate surface. ... may possibly have an influence on concrete-to-concrete bond strength

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(PDF) Reinforced Concrete Jacketing – Interface Influence ...

Concrete-to-concrete bond strength: Influence of an epoxy-based bonding agent on a roughened substra... January 2005 Magazine of Concrete Research Fernando A. Branco

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Epoxy Strengths Compressive Tensile Flexural Bond - Epoxy ...

Epoxy resins are designed to have a bond strength on concrete that is greater than the tensile strength of the concrete. If the bond strength of the epoxy or epoxy like material is greater than the tensile strength of concrete than if there is a failure it will be a failure of the limits of the strength of the concrete not the epoxy. Epoxy ...

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Performance of Bonding Agents by Retrofitting in M30

portugal;Technical university of lisbon,Portugal, “Concrete to Concrete bond strength: Influence of an epoxy –based bonding agent on a roughened substrate surface” [4] R.Radha krishnana, V.Syam prakash and C.K.Prasad Varma Thampan, 2007, “Performance Evaluation of Bonding

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BOND STRENGTH OF CONCRETE WITH THE

its influence on the bond between reinforcing steel bars and concrete. His conclusions showed that the bond strength was reduced by a percentage of 7.6% when the bars coated with rust agent. Hadi (2008) had investigated the bond strength of high strength concrete with high strength reinforcement steel.

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Evaluation of bond strength between old and new concrete ...

Dec 06, 2001  Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface Authors: E. N. B. S. Júlio , F. A. B. Branco , V. D. Silva Source: Magazine of Concrete Research, Volume 57, Issue 8 , 1 Oct 2005 (463–468)

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Correlation between concrete-to-concrete bond strength and ...

Aug 01, 2007  Slant shear and pull-off tests were adopted to assess bond strength in shear and in tension, respectively. In the slant shear test, a concrete specimen is tested under compression, Fig. 3.The adopted geometry was a 0.20 × 0.20 × 0.40 m 3 prism, with the interface at approximately 30° to the vertical. The rupture mode of the specimen in this test may be monolithic or adhesive, Fig. 4.

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(PDF) Effect of surface preparation and bonding agent on ...

The bond strength of the concrete- to -concrete interface is influenced by several parame ters, namely: 1) the preparation of the substrate surface; 2) the use of a bonding agent at t he interface ...

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(PDF) Longitudinal Shear Strength between Two Concrete ...

Concrete-to-concrete bond strength: Influence of an epoxy-based bonding agent on a roughened substrate surface. ... may possibly have an influence on concrete-to-concrete bond strength. Therefore ...

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Review of Epoxy Coated Steel on Bond Strength of Concrete

bond strength decreases. The cooling method does not affect the ultimate bond stress of the specimens using uncoated rebar very much but can greatly affect specimens that contained epoxy coated rebar. A more in-depth study can be considered regarding the cooling effect on the bond strength. 2.4. Wenjun Zhu, Jian-Guo Dai and Chi-Sun Poon,

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Epoxy Strengths Compressive Tensile Flexural Bond - Epoxy ...

Epoxy resins are designed to have a bond strength on concrete that is greater than the tensile strength of the concrete. If the bond strength of the epoxy or epoxy like material is greater than the tensile strength of concrete than if there is a failure it will be a failure of the limits of the strength of the concrete not the epoxy. Epoxy ...

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Evaluation of bond strength between old and new concrete ...

Dec 06, 2001  Concrete-to-concrete bond strength: influence of an epoxy-based bonding agent on a roughened substrate surface Authors: E. N. B. S. Júlio , F. A. B. Branco , V. D. Silva Source: Magazine of Concrete Research, Volume 57, Issue 8 , 1 Oct 2005 (463–468)

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Performance of Bonding Agents by Retrofitting in M30

portugal;Technical university of lisbon,Portugal, “Concrete to Concrete bond strength: Influence of an epoxy –based bonding agent on a roughened substrate surface” [4] R.Radha krishnana, V.Syam prakash and C.K.Prasad Varma Thampan, 2007, “Performance Evaluation of Bonding

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Title no. 96-S68 Bond of Epoxy-Coated Reinforcement ...

by the geometry of the reinforcing bars on bond is needed to devel-op realistic strategies for improving the bond strength of ep-oxy-coated reinforcement. Studies by Choi et al. (1991) and Darwin et al. (1996a) have demonstrated that the relative bond strength of epoxy-coated bars can be increased by increasing the relative rib area R r * of ...

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BOND STRENGTH OF CONCRETE WITH THE

its influence on the bond between reinforcing steel bars and concrete. His conclusions showed that the bond strength was reduced by a percentage of 7.6% when the bars coated with rust agent. Hadi (2008) had investigated the bond strength of high strength concrete with high strength reinforcement steel.

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Solutions for Bond Improving of Reinforced Concrete ...

case the bond strength was 1.50 N/mm2 smaller than at the normal failure. Consequently, this value was neglected. The results obtained on the specimens without special techniques for connection, concrete-to-concrete bond, as well on the specimens with improved bond by using special techniques, are presented in Table 1.

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Engineering Properties of Epoxy Resins Used as Concrete ...

Jan 01, 1996  The influence of curing temperature on the mechanical strength of the material was investigated by testing the strength of epoxies after curing at temperatures of 10, 20, and 40 C. Long-term tensile creep tests of epoxy adhesives subjected to difSerent sustained stresses that were conducted indicated that bulk-hardened epoxies have creep ...

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Bond of Epoxy-Coated Reinforcement: Coefficient of ...

Bond of Epoxy-Coated Reinforcement: Coefficient of Friction and Rib Face Angle by Emmanuel K. Idun and David Darwin The co~ffi"cients ef friction between epoxy-coated and uncoated rein-forcing .1/ Pel and mortar and the effects ef rib face angle on the rela-tive bond strength ef epoxy-coated bars are determined. Results for

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Laboratory Investigation on the Interface Bond Strength ...

2.2 Test Set up Kriegh [11] proposed in a cylinder-shaped specimen for the SST was used to evaluate the bond strength in shear of epoxy based resins. However, a prismatic version was adopted to study the bond strength of concrete-to-concrete interfaces.

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The significance of nanoparticles on bond strength of ...

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.

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The impact of surface preparation on the bond strength of ...

Abstract The article is stemmed from an experimental program in which the influence of various types of surface preparation on bond strength of repaired concrete is evaluated. Six different surface textures are studied: as-cast; wire brushed; acid etched; grooved; grooved-wire brushed; grooved-acid etched. According to ASTM C882, 144 half-specimens as substrate concrete are cast.

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ENGINEERING PROPERTIES OF EPOXY RESINS USED AS

Apr 11, 2016  The influence of curing temperature on the mechanical strength of the material was studied by testing the strength of epoxies after curing at temperatures of 10, 20, and 40 deg C. Long-term tensile creep tests of epoxy adhesives subjected to different sustained stresses that were conducted indicated that bulk-hardened epoxies have creep strains ...

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