Improvement of the properties of gypsum-based composites with recycled isostatic graphite powder from the milling production of molds for Electrical Discharge Machining (EDM) used as a new filler

Medina, Nelson Flores; Barbero–Barrera, María del Mar; Bustamante, Roberto Cervantes

doi:10.1016/j.conbuildmat.2015.12.194

Cited by 25 publications

(8 citation statements)

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“…The setting of favorable conditions for effective hydration can be reached by the application of ultrafine additives with high surface activity caused by their small size. Among such additives, it is possible to mention carbon-based nanomaterials such as carbon black [14][15][16][17], isostatic graphite [18][19][20], graphene oxide [21,22], graphene nanoplatelets [23,24], carbon nanotubes [25][26][27], and carbon fibers [28,29]. The listed additives possess several unique properties, such as high surface energy, mechanical strength, and electrical conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…The listed additives possess several unique properties, such as high surface energy, mechanical strength, and electrical conductivity. The application of such additives for the modification of composites provides an improvement in the structure of the binding matrix and, consequently, leads to the improvement of different composite properties [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

et al. 2021

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The present research is focused on the investigation of the influence of ultrafine additives on the structure formation of hardened cement paste and the establishment of the mechanisms of the morphological transformations, which determine the properties of hydrated products. In the course of the research, the modification of ordinary Portland cement was performed by the suspension of multi-walled carbon nanotubes (MWCNTs), carbon black (CB) paste, and silica fume (SF). Scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) microanalysis, X-ray diffraction (XRD) analysis, thermal analysis, and Fourier-transform infrared (FTIR) spectroscopy were used to study cement hydration products. The morphology of hardened cement paste depends on the chemical reactivity of additives, their geometry, and their genesis. The action mechanism of the inert carbon-based additives and pozzolanic silica fume were considered. The cement hydration products formed in the process of modification by both types of ultrafine additives are described. In the case of the modification of cement paste by inert MWCNTs and CB paste, the formation of cement hydration products on their surface without strong adhesion was observed, whereas in the case of the addition of SF separately and together with MWCNTs, the strong adhesion of additives and cement hydration products was noted.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

et al. 2021

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“…In order to improve physical and technical properties of gypsum binders, such as strength, water resistance, and durability, modern materials science suggests a wide use of mineral and organic modifiers (Petropavlovskaya, Buryanov, Novichenkova, & Petropavlovskii, 2018a, 2018bKondratieva, Barre, Goutenoire, & Sanytsky, 2017;Arikan & Sobolev, 2002;Flores Medina, Barbero-Barrera, & Bustamante, 2016;Flores Medina & Barbero-Barrera, 2017). Adding additives of mineral origin to the gypsum binder is considered one of the available ways to control its properties and the structure of gypsum rock.…”

Section: Introductionmentioning

confidence: 99%

Gypsum composition with siltstone-based mineral modifier

Yakovlev

Gordina

KHRITANKOV

et al. 2019

Modern Building Materials, Structures and Techniques (MBMST)

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The paper presents the results of studies of the structure and properties of the gypsum composition comprising 3% of crushed siltstone, a metamorphic rock. The structure and physicochemical properties of siltstone were studied, which predetermine its usage as a structuring additive in gypsum compositions. Adding crushed siltstone to the composition of a gypsum binder is shown to cause the compaction of the structure of the gypsum matrix due to changes in the morphology of crystalline hydrates of calcium sulfate and monolithic structure in general, and, consequently, the enhanced mechanical characteristics of the gypsum composition. Using scanning electron microscopy, differential thermography, and IR spectral analysis explain the change in the physicomechanical properties of the gypsum binder.

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“…POWDER ADDITIVES Improvement on the properties of gypsum-based composites with reused isostatic graphite powders from the processing creation of molds for Electrical Discharge Machining (EDM) utilized as new filler [47]. Surface Characterization and Multi-reaction streamlining of EDM process parameters utilizing powder blended dielectric such as silicon carbide is used as a dielectric medium [48].ZrN powder was used as dielectric on different heating temperature and impurity content was measured using inductively Coupled Plasma Mass Spectrometry [49].…”

Section: VImentioning

confidence: 99%

A Review on Progress in Electrical Discharge Machining and Theoretical Models

Prasanna¹

2017

IJRASET

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Electrical release machining (EDM) is one of the most non-conventional machining forms. EDM process depends on the thermoelectric vitality between the work piece and a cathode. A pulse discharge to happen in a little hole between the work piece and the cathode and expels the undesirable material from the parent metal through liquefying and vaporizing. The electrode and the work piece must have electrical conductivity to generate the spark. There are different sorts of items which can be delivered by EDM such as dies and moulds. The Auto motive industry, Aerospace parts and surgical components are manufactured by EDM process. This paper focuses on dry EDM machining, EDM with powder additives, EDM in water and advanced technique to predict the EDM performance.

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Improvement of the properties of gypsum-based composites with recycled isostatic graphite powder from the milling production of molds for Electrical Discharge Machining (EDM) used as a new filler

Cited by 25 publications

References 24 publications

Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

Gypsum composition with siltstone-based mineral modifier

A Review on Progress in Electrical Discharge Machining and Theoretical Models

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