Strength properties and molecular composition of epoxy-modified mortars

Ariffin, Nur Farhayu; Hussin, Mohd Warid; Sam, Abdul Rahman Mohd; Bhutta, Muhammad Aamer Rafique; Khalid, Nur Hafizah A.; Mirza, Jahangir

doi:10.1016/j.conbuildmat.2015.06.056

Cited by 64 publications

(27 citation statements)

References 6 publications

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“…It is known that adding a polymeric compound to a cementitious material can improve the material properties such as strength, durability, and interfacial bond between the newly applied material and the existing substrate [1][2][3][4][5][6][7][8][9][10][11][12]. Therefore, incorporating polymers in patch repair cement mortars is common for better repair work of various reinforced concrete (RC) structures, including bridges, dams, high-rise buildings, pavements, and marine concrete structures [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…There exist a few representative types of polymers, including acrylate polymers (AC), polyvinyl alcohol (PVA), styrene-butadiene rubber (SBR), and ethylene-vinyl acetate (EVA), all of which are utilized in the repair or surface treatment of RC structures. Many experimental studies were conducted to investigate the effect of different polymer types on the mechanical properties and durability of polymer-modified cement mortars (PCMs) [1][2][3][4][5][6][7][8][9]. Dogan and Bideci [1] studied the effects of different SBR replacement ratios (by weight) on the concrete strength measured at three, seven, and 28 days.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars

Kim

2020

Applied Sciences

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This is an experimental study showing the effect of four types of polymers (acrylate polymer (AC), polyvinyl alcohol (PVA), styrene–butadiene rubber (SBR), and ethylene-vinyl acetate (EVA)) on the mechanical properties of polymer-modified cement mortars (PCMs). One polymer dosage was used in this study (3%), and the effect of this dosage on PCMs was compared with a control mortar mix with 0% polymer. The compressive, flexural, and pull-off bond strengths were measured and compared with previous results in works of literature. The effect of polymer addition on improving the mechanical properties of PCMs was clarified, and this effect was more obvious on the flexural strength than that on the compressive strength. The PCMs containing EVA showed the best performance, with up to 33% and 63% increases in compressive and flexural strengths after 28 days, respectively. In comparison, AC, PVA, and SBR produced smaller (16%–46% compared to control) improvements in the flexural strength after 28 days. In general, PCMs containing EVA showed the best mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars

Kim

2020

Applied Sciences

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“…Water reducers and superplasticizers such as lignosulfonate and polycarboxylate also tend to improve the mechanical performance and durability of concrete by reducing the w/c ratio without affecting flowability [9]. The use of epoxy resins [10], expanded polystyrene [11], and subabsorbent polymers [12] has also led to improved strength and durability in cement mortars. Certain self-curing chemicals also enhance the durability of concrete by decreasing the water transport properties through a higher degree of hydration [13].…”

Section: Introductionmentioning

confidence: 99%

Strength and Durability Assessment of Portland Cement Mortars Formulated from Hydrogen-Rich Water

Sikandar

Chakraborty

et al. 2017

Advances in Materials Science and Engineering

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We investigated the effects of hydrogen-rich water (HRW) on the strength and durability of Portland cement mortars. We comparatively assessed the performances of HRW-based mortars (HWMs) with respect to cement mortars fabricated from control water (CWM). The results indicate that the use of HRW significantly improves the compressive, flexural, and splitting tensile strength of mortars at both the early and later ages of curing. Durability was assessed in terms of capillary absorption, ultrasonic pulse velocity (UPV), dynamic elastic modulus (DEM), and electrical resistivity (ER). We attribute the generally improved mechanical and durability properties of HWMs to the formation of more cement hydrates with fewer voids in the hydrogen-rich environment. Based on X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM) analyses, we deduce that the use of HRW in Portland cement mortars produces a more compact, dense, and durable microstructure with fewer voids due to a higher degree of hydration.

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“…Addition of polymers to cement paste can be considered an alternate method to reduce the effects of the carbonation process, since literature reports improvements in mechanical and chemical properties of cement‐based materials containing polymeric admixtures . Epoxy resins are a class of thermoset materials widely used as polymer composite matrices because of their high mechanical and adhesion characteristics, effective electrical insulation, chemical and solvent resistance, relatively low shrinkage during curing, low toxicity and cost as well as ease in processing .…”

Section: Introductionmentioning

confidence: 99%

Chemical degradation of reinforced epoxy‐cement composites under CO₂‐rich environments

et al. 2017

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Long‐term wellbore integrity is crucial to prevent leakage of CO2 and to ensure performance and safety of carbon geologic storage. One of the concerns is the degradation of Portland cement due to its exposure to CO2. In this study, Portland cement paste composed of three reinforced‐epoxy resins (talc, agalmatolite, and montmorillonite clay as filler) was compared to unmodified cement paste with respect to CO2 resistance. CO2 degradation experiments were conducted with aqueous CO2 at elevated pressure (50 bar) and temperature (70°C) in order to mimic wellbore conditions. Epoxy cement composites were characterized by phenolphthalein test, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and mechanical compression test. The preparation method of the composites is the parameter likely to affect the CO2 resistance than curing conditions (natural and thermal). Addition of up to 5% of montmorillonite clay reinforced‐epoxy resins provides an improvement in CO2 resistance over unmodified Portland cement paste, showing to be a promising alternative to obtain suitable materials for use in wellbores in CO2 sequestration reservoirs. POLYM. COMPOS., 39:E2234–E2244, 2018. © 2017 Society of Plastics Engineers

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Strength properties and molecular composition of epoxy-modified mortars

Cited by 64 publications

References 6 publications

Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars

Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars

Strength and Durability Assessment of Portland Cement Mortars Formulated from Hydrogen-Rich Water

Chemical degradation of reinforced epoxy‐cement composites under CO₂‐rich environments

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Strength properties and molecular composition of epoxy-modified mortars

Cited by 64 publications

References 6 publications

Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars

Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars

Strength and Durability Assessment of Portland Cement Mortars Formulated from Hydrogen-Rich Water

Chemical degradation of reinforced epoxy‐cement composites under CO2‐rich environments

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Product

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Chemical degradation of reinforced epoxy‐cement composites under CO₂‐rich environments