Applications of resins in bridge and structural engineering

Sims, F A

doi:10.1016/0262-5075(85)90042-9

Cited by 7 publications

(3 citation statements)

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“…In civil engineering, adhesives have been used for more than 50 years [34,35] for connecting structural elements without harming their structural integrity by drilling. The use of adhesives, initially, has been limited for strengthening, maintenance, or secondary connections [36] as was evidenced by the development of several retrofitting reinforcement methods [37,38]. Nevertheless, recently structural adhesives have been used in critical bonding of structures, notably in bridge engineering and the wind energy, as they offer advantages against other joining methods [39,40].…”

Section: Introductionmentioning

confidence: 99%

Review of fatigue of bulk structural adhesives and thick adhesive joints

Zuo

Vassilopoulos

2020

International Materials Reviews

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Fatigue of structural adhesives has been investigated through joints and a little number of works investigate bulk adhesive behaviour itself. Aerospace and automotive engineering focuses more on joint configuration studies, which are correlated with practical applications. Previous works showed that for thin adhesive joints, material properties measured by bulk adhesive testing and joint testing are similar despite the triaxial stress states developing in the adhesive bondlines. However, with the introduction of structural adhesives in construction industry, thicker bondlines have emerged where the bulk adhesive material dominates the joint behaviour. This review work summarises works on the fatigue of bulk structural adhesives used mainly in the construction industry investigating structural adhesives fatigue behaviour either through experiment on joints or on bulk adhesive specimens. The work focuses on thick adhesive bondlines in joints, and discusses the controversy that is over whether adhesive properties from joints or from bulk material should be used.

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Section: Introductionmentioning

confidence: 99%

Review of fatigue of bulk structural adhesives and thick adhesive joints

Zuo

Vassilopoulos

2020

International Materials Reviews

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“…Epoxy resins have found many industrial applications since first synthesized in the mid-20th century. Aerospace, construction, and, recently, medical uses [1][2][3][4][5][6][7][8][9] are some examples of growing applications. Epoxy belongs to a family of thermosetting polymers that have a wide variety of properties with remarkable advantages, such as excellent environmental resistance, high mechanical properties, and low shrinkage percentage [10].…”

Section: Introductionmentioning

confidence: 99%

Experimental modeling of the cure behavior of a formulated blend of DGEBA epoxy and C12-C14 glycidyl ether as a reactive diluent

Ali

Hammami

2005

Polym. Compos.

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Microwave curing of polymer matrix composites has been suggested as an attractive substitute for conventional thermal curing. Formulations of epoxy and reactive diluents have the advantage of better wettability and uniform fiber impregnation. However, higher peak exotherms in large masses, and thus thermal overshoot, presents a challenge for cure cycle optimization. Therefore, building a reliable curing model will not only predict the behavior of these materials during actual processing, but also facilitate numerical modeling of the process and comparison of other resin formulations. In this study the effect of the reactive diluent on the isothermal cure kinetics of low viscosity epoxy was investigated using differential scanning calorimetry (DSC). A formulated blend of diglycidyl ether of bisphenol A (DGEBA) and C 12 -C 14 aliphatic glycidyl was cured using diethylene triamine as the curing agent. Using a standardized procedure, ISO 113571-5, the epoxy formulation was isothermally cured at several temperatures and the heat flow monitored and recorded. Using the heat flow data from DSC, the rate of cure was determined experimentally and a proper autocatalytic model with a total order of about 2.3 was fit to describe the process. Leastsquare regression and isoconversion methods were used to find the model parameters and the activation energy, respectively. The accuracy of the model shows fine correlation with experimental data. By comparison to other epoxy resin without diluents, the analysis of the data shows that the reactive diluent increased the curing rate, while the values of activation energy and process parameters remained within the typical values of epoxy formulations. Based on these data, the future use of these types of resins in nonthermal curing of epoxy matrix composites is discussed. POLYM. COMPOS., 26: 593-603, 2005.

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“…Others (6-15) also had many contributions in this research field. The technique had many practical applications reported are concerned with bridges and multi-story buildings (16)(17)(18)(19)(20)(21).…”

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confidence: 99%

Behavior of R.C. T-Beams Strengthened with Glued Steel Plate

Salman¹

2015

ETJ

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The paper discusses the experimental research carried out at Sheffield University (1) by the author. The main aim of this paper is to study the structural behaviors of Tbeams strengthened by glued steel plates anchored at the ends withL-shaped plates to prevent the premature debonding failure. Further, the relative performance of external plates was compared with equivalent internal reinforcement designed to achieve the same ultimate strength. Results are presented for 24 T-beams; the variables studied were concrete strength (20-50Mpa), plate thickness (1.6-6mm) and double or single plate layers.The results are discussed and demonstrated a reduction in bar strains, central deflections and crack widths was between "30% and 53%" at service load. The theoretical ultimate load of the composite section was achieved for beams with single and double plated and the maximum increase in strength was 41%. Tests results on beams with 25% to 72% of their main reinforcement replaced by steel plates showed that at service load a reduction in bar strains, central deflections and crack widths were between "54% and 66%".

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Applications of resins in bridge and structural engineering

Cited by 7 publications

References 0 publications

Review of fatigue of bulk structural adhesives and thick adhesive joints

Review of fatigue of bulk structural adhesives and thick adhesive joints

Experimental modeling of the cure behavior of a formulated blend of DGEBA epoxy and C12-C14 glycidyl ether as a reactive diluent

Behavior of R.C. T-Beams Strengthened with Glued Steel Plate

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