study on improving absorption of gypsum powder

Characterization of Natural Gypsum Materials and Their …

The absorption coefficients were slightly higher than the ones of conventional plasters with similar thickness. A good sound insulation performance was confirmed, especially for Safi Gypsum, with a transmission loss-value up to about 50 dB …

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Experimental Study on the Properties and …

In order to achieve the resourceful, large-scale and high-value utilization of bulk industrial solid wastes such as flue gas desulfurization gypsum (FGDG), fly ash (FA) and ground blast furnace …

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Improvement on mechanical strength and water absorption of gypsum

Except careful choosing the gypsum formula, i.e., the ratio of α-H to β-H [1], using additives [2] like polymers can improve the strengths and alternate the water absorption; but so far, except countable experiences coming from industry, there are very few reports can be adapted to understand how the functional groups in molecular …

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Gypsum-Based Humidity-Control Material: Preparation, …

To improve the humidity-control performance of traditional building materials and augment their efficacy in regulating indoor relative humidity, this study incorporated sepiolite powder activated by calcium chloride into gypsum–silica gel humidity-control material to prepare a new type of gypsum-based humidity-control material.

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Infrared, optical absorption, and EPR spectroscopic studies …

The chemical composition of the natural gypsum is compiled in Table 1.The room temperature powder X-ray diffraction pattern of the natural gypsum presented in Fig. 1 shows quite sharp peaks with little background absorption. The presence of principal reflections at the d-spacings 4.2782, 7.5419, 3.0689, 2.8781, 2.6909 Å and their …

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Experimental Study on Application of Anhydrous Plaster …

lime plaster powder improve the gelling properties of stucco gypsum and play an active role in the hydration of anhydrite. Because of volume shrinkage phenomenon of lime powder after har dening, sand is ad ded as a ggrega te to pr ev ent cr acking and increase the intensity of stucco gypsum. The respiratory is composed by the moisture …

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Preparation of gypsum with high purity and whiteness from …

Materials and chemicals. The raw PG material used in this study was obtained from Sinochem Fuling Chemical Industry Co, Ltd. (Chongqing, China). After this, PG was dried at 40 °C for 12 h to ...

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Effects of Gypsum and Limestone Powder on …

The study evaluated the influences of anhydrous gypsum, di-hydrate gypsum, and limestone powder on fresh properties and compressive strength of concrete with ground granulated blast-furnace …

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Building Gypsum

Gypsum Decorative Materials. In Building Decorative Materials, 2011. 4 Applications of Building Gypsum. Building gypsum is used as heating resistant, moisture preserving, sound absorbing and fire proofing material. As a building decorative material, it is widely used in ceiling and partition projects. Building gypsum can be used to manufacture …

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Highly efficient modified phosphogypsum building gypsum powder …

The stockpiling of phosphogypsum is a waste of land resources and also causes serious pollution to natural resources such as water and atmosphere. This paper explores the mechanism of efficiently modified phosphogypsum and constructs a model and evaluation system for heavy metal leaching and migration transformation. The modified …

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Partial Cement Replacement in Concrete with Gypsum Powder …

In this study, recycled gypsum powder from waste drywall will be used as a partial replacement for cement in concrete. Five concrete mix designs which include 0, 10, and 20% of recycled fine gypsum powder and whole gypsum are considered for this study. ... Infrastructure regeneration and rehabilitation improving the quality of life …

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Physicomechanical Properties of Gypsum with Mineral …

This work has investigated the possibility of two common minerals (silica flour and talc powder) in modifying composite gypsum's physical and mechanical …

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(PDF) Applications of Recycled Gypsum from Waste Drywalls …

Recycled gypsum powder from waste drywalls combined with fly ash for partial ceme nt rep lacement in concrete. Journal of Cleaner Production 274, 122785.

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Physical and mechanical properties of gypsum-based …

Abstract. The purpose of this experiment is to investigate the influence of basalt fibers (BF), glass fibers (GF), and Polyvinyl alcohol (PVA) fibers on the properties …

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New insight into the phase changes of gypsum

Gypsum was also investigated as a partial substitute for ordinary Portland cement. The resulting material is the eco-friendly gypsum-cement composite [].For example, the use of 50% recycled gypsum in cement production could save 6.78 E+07 MJ/year in the non-renewable energy category in Spain alone, and in the global warming …

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Sustainable Absorption Panels from Agricultural Wastes

mixture. Second objective is to identify the absorption rate of the panels. The study encompasses the fabrication of the particle board using the coconut husk powder mix with shredded waste paper and using the gypsum powder as the binder for the two materials. Four acoustic panels of size 0.5m x 0.5m and 0.012 m thick were fabricated with different

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High-Strength and Heat-Insulating Cellular Building …

The powder mixture representing the binding material was composed of Portland cement (30%), gypsum-containing components (30%), and ash (40%). Aluminum powder was used in the amount of 6.55 kg/m 3 and the ash was dosed at 309 kg/m 3. The amount of working water was 371 kg/m 3, with the water/solid ratio being 0.74. The …

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Properties study of cotton stalk fiber/gypsum composite

This paper reviews previous studies of GCs reinforced with fibres and summarizes, reviews, and discusses the sources and properties of gypsum and fibres, the pretreatments of fibres to improve ...

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Exploring the Properties and Versatile Applications …

Gypsum powder is a highly mold-resistant material due to its ability to absorb moisture. When applied to walls and other structures, it helps reduce the level of moisture in the air, which inhibits the growth of …

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Using Gypsum to Improve Clay Soil in Australia : …

In its hydrated form, it is a powder used most commonly around the world to make wall plaster in the building trade. In horticulture and agriculture, gypsum is an incredibly useful soil adjustment, offering …

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Utilizing waste stone powder for improving properties of …

1. Introduction. Phosphogypsum (PG) is a type of industrial solid waste generated during the wet method process for producing phosphoric acid [1], and the manufacturing of one ton of phosphoric acid yields between 4 and 6 tons of PG [2].At present, China is witnessing an annual release of more than 70 million tons of PG, …

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Properties study of cotton stalk fiber/gypsum composite

Section snippets Raw materials, shape technology and equipment. The materials are prepared as follows. Mix β-hemihydrate gypsum powder, slag that was ground through 170 mesh and cotton stalk fiber that was crushed by disintegrator first, and then press with wheel, with a length of 5–20 mm and a diameter of 0.5–3 mm at a ratio …

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Development of similar materials for fluid–solid coupling …

It can be concluded that gypsum powder can effectively adjust the softening coefficient of the material, and a gypsum content range of 4% -16% can be applied to most sedimentary rocks, which is of ...

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Compressive Strength of Fly Ash Brick with Addition of …

Key words : Fly ash, Lime, Gypsum, Quarry dust, Compressive strength and Water absorption. Introduction In the present scenario in the construction industry, use of economic and environmental friendly material is of a great concern. One of the main ingredients used is cement. It is observed from various studies

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Effects of Gypsum and Limestone Powder on Fresh …

Usage of industrial by-products such as ground granulated blast furnace slag (GGBFS), gypsum, and limestone powder have gained prominence in concrete production. It is, therefore, very important to conduct research into the various materials and their attendant influence on properties of concrete at different ambient temperatures. …

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The study on the effect of flotation purification on the performance …

The mechanical strength of high strength gypsum prepared from PG concentrate was significantly better than that of raw PG, indicating that flotation purification can effectively improve the ...

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Preparation and absorption/desorption performance of …

Absorption/desorption properties of some humidity controlling materials which contain gypsum as basic cement materials and activated Sepiolite powder as …

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Characterization of Natural Gypsum Materials and …

Gypsum powder was used for fabricating samples, which were investigated in terms of thermal and acoustic performance. Thermal properties were measured by means of a hot disk apparatus and...

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Improvement on mechanical strength and water absorption …

Unlike construction gypsum, gypsum model urges both high mechanical strength and water absorption. In this experiment, synthetic polymers were investigated …

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Gypsum Powder in Mycology: A Comprehensive Guide to …

What is Gypsum Powder? Gypsum powder is a soft mineral compound consisting of calcium sulfate dihydrate.It is commonly used in various industries including construction, agriculture, and mycology.In mycology, gypsum powder serves as a pH buffer, providing a stable and ideal environment for mushrooms to grow. It also helps in …

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