Sustainability of gypsum products as a construction material

Lushnikova, Nataliya; Дворкін, Леонід

doi:10.1016/b978-0-08-100370-1.00025-1

Cited by 73 publications

(39 citation statements)

References 26 publications

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“…The synthetic gypsum products are commonly used in the building industry [1]. The production of gypsum lies in the conversion of calcium carbonate in flue gas desulfurization technology using a wet limestone method that is often integrated with coal combustion in power plants [2].…”

Section: Introductionmentioning

confidence: 99%

Paraffin Permeability of Synthetic Gypsum Binders Modified by Individual Polymers

Powała

Heim

2019

Latvian Journal of Physics and Technical Sciences

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The paper presents an experimental study of five different gypsum composites taking into account paraffin permeability. The composites consist of synthetic gypsum, paraffin and polymers. The samples were produced from gypsum slurry of mixing ingredients, all in the liquid state. After 7 days of maturing, the condition of the samples was assessed as well as drying time was determined. In the second part, the paraffin tightness of different samples was analysed. The results showed that after three weeks of tests the tightness sample was A4. Other polymers were characterised by lower tightness. The content of polymer had also the effect on the final results, but the direct relation between polymer content and paraffin tightness was not observed.

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Section: Introductionmentioning

confidence: 99%

Paraffin Permeability of Synthetic Gypsum Binders Modified by Individual Polymers

Powała

Heim

2019

Latvian Journal of Physics and Technical Sciences

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“…Consistent efforts with the goal of significant reduction of emissions of CO 2 are directed to research the chemistry of cement that ensures partial or complete replacement of ordinary Portland cement by ecologically friendly binders [18]. Currently, the consumption of calcium sulphate plasters increases as they belong to the most ecologically friendly binders because of their low energy consumption during the production.…”

Section: Research Resultsmentioning

confidence: 99%

Sustainable low-carbon binders and concretes

et al. 2020

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Sustainable development depends on a consistency of interests, social, ecological and economic, and that the interests are evaluated in a balanced manner. In order to reduce CO2 emissions, the conception of decreasing clinker factor and increasing the role of supplementary cementitious materials (SCMs) in the cementitious materials has high economical and environmental efficiency. The performance of clinkerefficient blended cements with supplementary cementitious materials were examined. The influence of superfine zeolite with increased surface energy on the physical and chemical properties of low-carbon blended cements is shown. Increasing the dispersion of cementitious materials contributes to the growth of their strength activity index due to compaction of cement matrix and pozzolanic reactions in unclincker part. In consequence of the early structure formation and the directed formation of the microstructure of the cement matrix is solving the problem of obtaining clinker-efficient concretes. Shown that low-carbon blended cements with high volume of SCMs are suitable, in principle, for producing structural concretes.

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“…For example, in the Serbian cement industry, A-grade cements should have WI values >80%, so for gypsum to be used as one of the components of A-grade cements, it must comply with this standard (RS Official Gazette, 2014). Furthermore, chiefly high-strength gypsum of high whiteness is applied for interior decoration (Lushnikova & Dvorkin, 2016).…”

Section: Whiteness Indexmentioning

confidence: 99%

Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

et al. 2020

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Two samples collected from the phosphogypsum deposits of the chemical products industry Elixir Prahovo (Serbia) were subjected to a recrystallization experiment performed over several repeated cycles. In these tests, phosphogypsum was separated into recrystallized (purified) gypsum, insoluble residue and supernatant. Both raw phosphogypsum and recrystallized gypsum were examined using inductively coupled plasma optical emission spectrometry, X-ray diffraction and scanning electron microscopy with energy-dispersive spectrometry. The activity concentrations of 238U, 235U, 226Ra, 210Pb, 232Th and 40K were investigated using γ-ray spectrometry. Based on the activity concentration results, a number of radiometric parameters were calculated for the original and recrystallized phosphogypsum (i.e. radium equivalent activity, γ indices for construction materials, α index and external and internal hazard indices). Raw phosphogypsum samples showed greater mean activity concentration levels of 238U and 226Ra than the international recommended limits, while the recrystallized gypsum demonstrated notably lower activity concentrations for these two isotopes. The activity concentration of 226Ra in recrystallized gypsum is ~6 times lower than in raw phosphogypsum. Therefore, recrystallized gypsum does not present a radiation hazard when used as a building material, while raw phosphogypsum meets the requirements only for road construction materials.

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Sustainability of gypsum products as a construction material

Cited by 73 publications

References 26 publications

Paraffin Permeability of Synthetic Gypsum Binders Modified by Individual Polymers

Paraffin Permeability of Synthetic Gypsum Binders Modified by Individual Polymers

Sustainable low-carbon binders and concretes

Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

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