Durability assessment of epoxy modified concrete

El-Hawary, Moetaz; Abdul-Jaleel, A.

doi:10.1016/j.conbuildmat.2010.02.004

Cited by 48 publications

(23 citation statements)

References 1 publication

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“…Polymers have been used for modification of cementitious materials for many decades, but the available studies on polymer-cement mortars (PCMs) far exceed those on polymer-cement concrete [14,29,50]. Due to this and to the fact that short-term alkali-reactivity tests are carried on mortar bar specimens, the discussion on the potential polymer action on ASR is based on data from studies of PCMs.…”

Section: Polymer Action On Asrmentioning

confidence: 99%

Review and discussion of polymer action on alkali–silica reaction

2012

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This paper compares the factors known to influence the deleterious alkali-silica reaction in concrete with the properties that polymers tend to modify in cementitious materials. A discussion on the potential ASR-influencing mechanisms of polymer additions is provided, along with a critical review of the existing literature on the subject. The influence of the potentially significant differences in mechanical properties and sorptivity between polymer-modified and unmodified cementitious materials on the expansion results of alkali reactivity tests is also discussed. According to the available results, the influence of polymers on ASR-related expansion seems to depend on both polymer type and dosage, suggesting the existence of concurrent, not yet well understood mechanisms by which polymers may influence ASRrelated expansion. As polymer modification of cementitious materials can lead to significantly lower modulus of elasticity, higher tensile strength and resistance to microcracking, it is suggested that further research on the subject includes not only expansion tests but also an assessment of the resistance of polymer-modified cementitious materials to ASRrelated damage, the main concern due to this deleterious phenomena.

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Section: Polymer Action On Asrmentioning

confidence: 99%

Review and discussion of polymer action on alkali–silica reaction

2012

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“…However, PU and epoxy are characterized by high flammability and fabrication costs. As an alternative, various researchers mixed inorganic and organic grouting materials to prepare composites with excellent mechanical properties, such as PU/cement, epoxy resin/cement, PU/water glass (PU/WG), and phenolic resin/SiO 2 . Among these materials, PU‐based composites demonstrated several advantages.…”

Section: Introductionmentioning

confidence: 99%

Effects of different catalysts on the structure and properties of polyurethane/water glass grouting materials

Zhang

et al. 2018

J of Applied Polymer Sci

114

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Polyurethane/water glass (PU/WG) grouting materials were prepared in presence of different proportions of catalyst. The effects of catalyst on the mechanical properties, thermal properties, and chemical cross‐sectional morphologies of the grouting materials were also investigated. Catalyst addition can significantly increase the chemical reaction rate, reduce the gel time and curing time, and improve the thermal stability of PU/WG grouting materials. It was found that the grouting material containing 0.1 wt % BDMA + 0.1 wt % DBTDL demonstrated high fluidity, short curing time, and high early‐stage and late‐stage (up to 66.1 MPa) compression strengths. However, when the content of the added catalyst was equal to 0.5 wt %, fine cracks were formed in the material structure accompanied by the detachment of spherical particles from the PU matrix, which significantly deteriorated its mechanical properties. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46460.

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“…Consequently, epoxy resins are used for a wide range of applications such as adhesives, coatings, mechanic and electronic materials, molding compounds, composites, and in structural application [4][5][6][7][8][9][10][11]. Although epoxy resins are used for a wide range of applications, their brittleness, due to the high crosslink density in epoxy cure systems, is a major drawback for several advanced applications [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of amino-terminated hyperbranched polymer and its effect on impact resistance of epoxy resin thermosets

Cui

Hou

2015

Colloid Polym Sci

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Amino-terminated hyperbranched polymer (HBP-NH 2 ) was synthesized from diethylenetriamine (DETA) and methyl acrylate (MA) by melt polycondensation through AB 3 and AB 2 route, and its chemical structure was characterized by attenuated total internal reflectance infrared spectroscopy (ATR-IR) and 1 H nuclear magnetic resonance ( 1 H-NMR) spectroscopy. Then, the influence of HBP-NH 2 content on the toughness improvement and fractural surface morphology of diglycidyl ether of bisphenol A (DGEBA) cured systems was investigated through impact resistance test and field emission scanning electron microscopy (FESEM), respectively. The results indicated that HBP-NH 2 can enhance the toughness of epoxy cured system near 61 % than the neat DGEBA cured thermosets. FESEM images show that the toughness enhancement of epoxy system should be based on shearing deformation mechanism (the thermosets modified with low content of HBP-NH 2 ) and the second phase toughening mechanism (the thermosets modified with high content of HBP-NH 2 ).

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Durability assessment of epoxy modified concrete

Cited by 48 publications

References 1 publication

Review and discussion of polymer action on alkali–silica reaction

Review and discussion of polymer action on alkali–silica reaction

Effects of different catalysts on the structure and properties of polyurethane/water glass grouting materials

Synthesis and characterization of amino-terminated hyperbranched polymer and its effect on impact resistance of epoxy resin thermosets

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