Effect of environmental pH values on phase composition …
The XRD pattern is illustrated in Fig. 1 for Portland cement samples exposed to Na 2 SO 4 solution at different pH values, with significant differences in the phase content of corrosion products at different pH values and corrosion ages. At the corrosion age of 28 days, ettringite, gypsum, calcium hydroxide and unreacted tricalcium silicate were …
Use of Gypsum on Soils: A Review | SpringerLink
Gypsum is a relatively common mineral that is widely available in agricultural areas and has a number of specialized agronomic uses, principally as a Ca source on legumes and as a soil conditioner on sodic soils. Recent research has suggest that the utility of gypsum...
Evaluation of engineering properties and environmental effect …
Storage and landfill are the main ways to dispose of by-product gypsum (see Fig. 2), and discard is also a common way.In Turkey, the PG produced per year is direct discarded in landfills, rivers and ponds (Degirmenci et al., 2007).However, there are some harmful substances in the waste gypsum, which pollutes the environment and causes …
Environmental Evaluation of Gypsum Plasterboard Recycling
The different moisture contents of the investigated gypsum types (natural gypsum 1%, recycled gypsum 3–5%, and FGD gypsum 8–10%) affect the energy …
Environmental Conditions
Gypsum panels should not be installed where they will be subject to direct exposure to water or continuous high humidity conditions. As with all construction materials, gypsum …
Effect of Different Evaporation Rates on Gypsum Habit: …
To recognize the effect of impurities on the gypsum habit, the impurity-free gypsum habit must be known. This is often reported in the literature by mixing calcium chloride dihydrate (CaCl 2 ·2H 2 O) or calcium nitrate (Ca(NO 3) 2) with sodium sulfate (Na 2 SO 4) to produce supersaturated solutions with respect to calcium sulfate dihydrate …
Coal explained Coal and the environment
Coal is an abundant fuel source that is relatively inexpensive to produce and convert to useful energy. However, producing and using coal affects the environment. Effects of coal mining. Surface mines (sometimes called strip mines) were the source of about 63% of the coal mined in the United States in 2022.
Embodied Carbon and Material Health in Gypsum …
For gypsum drywall, the biggest opportunity to work toward lower-carbon is to reduce energy use at the drywall manufacturing site. The biggest opportunity to work toward ...
Evaluation of engineering properties and environmental …
Storage and landfill are the main ways to dispose of by-product gypsum (see Fig. 2), and discard is also a common way.In Turkey, the PG produced per year is direct …
Sustainability | Free Full-Text | Quantifying Environmental …
The ongoing global climate change and the associated environmental degradation pose a threat to Europe and the rest of the world. Raw materials and energy are required to produce building materials, which are used for construction purposes. Resulting buildings and structures generate waste during construction, operation, and …
Environmental factors influencing fungal growth …
Introduction. Indoor environments, as the main habitats of modern humans, encompass a complex mixture of viable and dead microorganisms [] which can affect occupants' health and also …
Is Gypsum Good for Lawns? What You Need to Know
Avoid filling it on the lawn to prevent concentrated spots of gypsum that could affect grass growth. Apply Evenly: Walk at a steady pace and use a consistent pattern when applying gypsum to your lawn. Overlapping slightly on each pass can help prevent missed areas or stripes. ... Gypsum is a natural mineral that is safe for the environment ...
Gypsum Plasterboard and the environment
Gypsum can regulate humidity through moisture absorption. Lining paper is typically 90% recycled. Recyclable - content of new plasterboard can be up to 25% recycled. Production and calcination use significant amounts of natural gas and fossil-derived electricity. Global warming effect of …
Does phosphogypsum application affect salts, nutrients, and …
A pot experiment was undertaken, to evaluate the effect of Phosphogypsum (PG) and Gypsum (G), to remove salts, nutrients and trace elements in leached water from saline and saline-sodic soils. In order to determine the efficiency and safety of these amendments, as an affordable strategy, for overcoming salinity and sodicity stress.
effect of gypsum mining on environment
Gypsum Plasterboard is versatile & recyclable but uses considerable energy in a process that also can cause toxicity to land and eutrophication of water. ... but the biggest source of extraction is in East Sussex where mining extracts some 100,000 tonnes of gypsum a year from 100 m below the High Weald. ...
Review on the effect of gypsum content on soil behavior
According to the Environment and Raw Material Committee ... It is well known that gypsum affects the properties of soils used as a construction materials. However, some researchers used natural gypsum and other used recycled gypsum to investigate the effect gypsum on soil performance. The authors illustrate and discuss …
Evaluation of engineering properties and environmental effect …
The discard and landfill of by-product gypsum cause significant environmental problems. About 100–280 million tons of phosphogypsum and a large amount of waste plasterboard are produced every year in the world, but the utilization rate of phosphogypsum is about 10%. Most by-product gypsum is directly landfilled or …
Analysis of Mechanical and Thermal Performance and …
Gypsum board is a building material known for its various qualities and functional characteristics, including its low density, fire resistance, thermal insulation, …
The Effect of Environmental Conditions on Drywall …
The ideal conditions for installation, finishing, and decorating of gypsum materials are closely matched to intended occupancy environments. Anything too hot, too cold, too …
Life cycle energy and material flow implications of gypsum …
We study how variations of selected parameters would affect the environmental impacts associated with gypsum plasterboard over its life cycle. Both …
Environmental Evaluation of Gypsum …
The different moisture contents of the investigated gypsum types (natural gypsum 1%, recycled gypsum 3–5%, and FGD gypsum 8–10%) affect the energy consumption of the processing and, …
Recycling of phosphogypsum to prepare gypsum plaster: Effect …
1. Introduction. Phosphogypsum (PG) is an industrial waste derived from the wet process for the manufacture of phosphorus fertilizer, during which the natural phosphate rock ore reacts with sulfuric acid [[1], [2], [3]]: (1.1) Ca 5 (PO 4) 3 F + 5 H 2 SO 4 + 10 H 2 O → 3 H 3 PO 4 + 5 C a SO 4 ⋅ 2 H 2 O + HFApproximately 4–5 tons of PG are …
Evaluation of engineering properties and environmental effect …
@article{Pu2021EvaluationOE, title={Evaluation of engineering properties and environmental effect of recycled gypsum stabilized soil in geotechnical engineering: A comprehensive review}, author={Shaoyun Pu and Zhiduo Zhu and Wangwen Huo}, journal={Resources Conservation and Recycling}, year={2021}, …
Autism Spectrum Disorder and the Environment_fact …
about specific gene-environment interactions. • NIEHS is also interested in learning more about environmental exposures, such as air pollution and . related changes at the cellular level, that affect brain development. For more information on the National Institute of Environmental Health Sciences, go to
Gypsum Soils—Their Morphology, Classification, Function, and Landscapes
Gypsum and calcium carbonate behave differently in terms of solubility and precipitation in a soil environment, and gypsum solubility may result in more progressive–regressive cycles corresponding to wetting–drying events. ... While precipitation of calcium carbonate is described as having an aggregant effect, gypsum …
Life Cycle Resources
Life Cycle Assessment tools — including those employed in analyzing life-cycle impacts of gypsum products — use environmental, costing and human health criteria to compare building materials and building systems. Life cycle tools typically take two forms: They examine the financial life-cost of a material or system or appraise the environmental …
Sustainable Uses of FGD Gypsum in Agricultural Systems
The environmental impacts of FGD gypsum are mostly positive, with only a few negative results observed, even when applied at rates representing cumulative 80-year applications. Thus, FGD gypsum, if properly managed, seems to represent an important potential input into agricultural systems. ... In-season Effect of Flue Gas Desulfurization …
Sustainability | Free Full-Text | Quantifying …
For this study, the environmental impact was assessed using the LCA method for three gypsum plasters, one based on natural gypsum and two others on FGD gypsum. All products under normal …
Environmental Conditions
As with all construction materials, gypsum panel products must be installed and stored under specific environmental conditions. Failure to comply with basic application and maintenance requirements may limit the service life of the material.
Moisture parameters and fungal communities associated with gypsum …
Different types of gypsum drywall had a significant effect on fungal sporulation and growth, yet the physical and chemical properties of gypsum drywall, ... Fallah P, Robbins C. Controlled study of mold growth and cleaning procedure on treated and untreated wet gypsum wallboard in an indoor environment. J Occup Environ Hyg. …