High-pressure epoxy-impregnated cementitious materials for microstructure characterization

Chen, J.J; Zampini, Davide; Walliser, A.

doi:10.1016/s0008-8846(01)00620-2

Cited by 31 publications

(25 citation statements)

References 5 publications

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“…The cement and water were used to obtain standard cement slurry. The amounts of the components of the slurries were calculated in relation to a final density of the cured slurries from 1.50 to 2.00 g cm −3 [6,7]. The cement slurries were poured into cubic molds with 5.08 cm sides and cured for 30 days before use.…”

Section: Preparation Of the Cement Slurriesmentioning

confidence: 99%

“…At the moment, polymeric materials are used as concrete or mortar additives in order to control the rheological properties or to improve the toughness, as protective coatings for civil structures, as adhesives for the reinforcement of bridge structures by bonded composites, and as sealing resins for injecting cracks in concrete [3,4]. Epoxy adhesives are even in most of these applications, a good wettability of the cementitious substrate by the polymer is required in order to promote physico-chemical interactions and ensure an optimal level of adhesion between the mineral and organic phases [5,6]. Therefore, the surface interactions of cementitious substrates, and especially the dispersion and acid-base properties, are of great importance.…”

Section: Introductionmentioning

confidence: 99%

“…The mixing procedures for the epoxy cement mortar were fairly complicated by the two-component mixing, epoxy resin, and any hardener. The epoxy resins can harden in the presence of alkalis formed from the hydration of cement [1,5,6].…”

Section: Introductionmentioning

confidence: 99%

“…[6,7]. Several hardened oilwells have been observed to have intercommunication problems attributed to the occurrence of reactions between the hardened cement slurry in the annulus and the acid, which is used frequently in oilfield operations.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis and characterization of epoxy-modified cement slurries—Kinetic data at hardened slurries/HCl interfaces

Cestari¹,

Vieira²,

Pinto³

et al. 2008

Journal of Colloid and Interface Science

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Section: Preparation Of the Cement Slurriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and characterization of epoxy-modified cement slurries—Kinetic data at hardened slurries/HCl interfaces

Cestari¹,

Vieira²,

Pinto³

et al. 2008

Journal of Colloid and Interface Science

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“…Because of sealing the material structure with the polymer, and the effect of a number of physicochemical factors, its strength increases by several times, and frost resistance and resistance significantly increases in aggressive media [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Concrete composites of double structure formation

2017

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Abstract. Modification of concrete composites includes the manufacture of a concrete product, followed by its impregnation with monomers such as styrene and methyl methacrylate, capable of curing in concrete pores. However, despite the high efficiency of concrete modification with polymers, their production is hampered by the complexity of the technology associated with the toxicity and explosiveness of these impregnating materials. The article proposes to use technical vegetable oil as an impregnating material. The study showed that the treatment of concretes with technical vegetable oil (TVO) reduces their water absorption to less than 1%, strength by 40%, and frost resistance by an order of magnitude.

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Epoxy resin‐cement paste composite for wellbores: Evaluation of chemical degradation fostered carbon dioxide

et al. 2017

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Excessive carbon dioxide (CO2) environmental emission can be partially solved using carbon geological storage technologies. Up‐to‐date materials in CO2 injection wells are strongly susceptible to acidic attacks causing their irreversible damage over a long time scale. This study investigates degradation by CO2 of epoxy resin‐cement paste composites at elevated pressure (50 bar) and temperature (70°C) to mimic wellbore conditions. The effect of epoxy resins on cement carbonation was evaluated by phenolphthalein test, field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and numerical simulations. According to electronic‐structure‐based molecular dynamics simulations, the epoxy resin forms a separate phase that blocks potential reaction sites between the cement and CO2. Thanks to CO2‐phobic behavior, the resin repels CO2 and minimizes cement damage due to degradation process. The optimal content of epoxy resin in the cement paste was up to 30% w/w. The reported results provide clear guidelines for further evolution of reinforced cements for use in CO2 injection wellbores. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

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High-pressure epoxy-impregnated cementitious materials for microstructure characterization

Cited by 31 publications

References 5 publications

Synthesis and characterization of epoxy-modified cement slurries—Kinetic data at hardened slurries/HCl interfaces

Synthesis and characterization of epoxy-modified cement slurries—Kinetic data at hardened slurries/HCl interfaces

Concrete composites of double structure formation

Epoxy resin‐cement paste composite for wellbores: Evaluation of chemical degradation fostered carbon dioxide

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