1. Introduction. Gypsum plaster has been a material used since long time ago: in Egyptian pyramids and tombs at least 2000 years BC, in Greece 1000 years BC and by the Romans later [1] and is still extensively used in building construction for indoor wall renderings, blocks, plates and components. The gypsum plaster use is widely spread …
DOI: 10.1016/J.CONBUILDMAT.2011.06.072 Corpus ID: 136559540; Effect of citric acid on setting inhibition and mechanical properties of gypsum building plasters @article{Lanzn2012EffectOC, title={Effect of citric acid on setting inhibition and mechanical properties of gypsum building plasters}, author={Marcos Lanz{'o}n and Pedro Antonio …
Hydrogen gas production can be carbon neutral if produced from renewable/green electricity through, for example, the electrolysis of water instead of steam reforming. The …
The present study was aimed to produce gypsum plaster composites using mineral admixture (natural and calcined zeolite) and bio-filler (shell powders). A number of conclusions can be drawn from the obtained experimental results. 1. The various water binder ratios adopted showed dramatic effects on the workability of the gypsum …
The amazing properties of structural gypsum make it as a miracle material for finishing construction processes, especially from the health and the environmental point of view.
1. Introduction. The gypsum plaster chemically known as Calcium sulphate hemihydrate is one of the widely used building materials and its utilisation can be traced back to several thousand years ago [1].The Calcium sulphate hemihydrates were commonly known as "green cements" due to their healthful contribution to environment and …
The hemihydrate gypsum appeared and the pH value increased after fast firing. In the gypsum industry, the main fields of phosphogypsum utilization are the conversion of phosphogypsum to plaster and plaster products. Singh (2005) studied the impact of phosphogypsum impurities on strength and microstructure of selenite plaster.
•. Calcium sulfate (gypsum) types (see BS 1191-Part 1), used neatly. •. Lightweight plasters (see BS 1191 Part 2) initially hold more water than other types and may take …
The effects of kaolin on the properties of flue gas desulphurization gypsum-based steel slag composites were analyzed in this article and the influence rules of setting time, final setting time on ...
The recycled gypsum plaster is obtained by a simple process of crushing, sieving and heating at relatively low temperatures [9]. The dehydration of the hydrated gypsum plaster (gypsum waste) is in temperature up to 180 °C. The use of this waste provides a saving of raw materials and a reduction of the environmental impact.
Download Citation | Synergistic effect of mineral admixture and bio-carbonate fillers on the physico-mechanical properties of gypsum plaster | The present study proposes a new strategy to develop ...
Retain desirable physical properties uniform chemical and physical properties gypsum plaster water In the presence of water, the plaster will revert to These include: talc iron oxide kaolin resins ball clay asphalt perlite starches effects: Industrial plasters require from 65 to 160 lb of water per 100 lb of plasterkaolin uses for gypsum - bio ...
This study investigates the impact of kaolin-modified superabsorbent polymers (SAPs) as internal curing agents on mortar properties. While SAPs have been known to mitigate the shrinkage of cement-based materials, their adverse effects on …
Highlights We propose an alternative method using ATR-FTIR to study the plaster setting time. We found new evidences about the role of citric acid as retarder by XRD. In this study the efficiency of citric acid is maximum at doses of 1500 ppm. New evidences on the effect of citric acid are shown by ultrasonic tests and SEM. …
DOI: 10.1016/J.CONBUILDMAT.2014.06.081 Corpus ID: 136757053; Effect of some waste additives on the physical and mechanical properties of gypsum plaster composites @article{Khalil2014EffectOS, title={Effect of some waste additives on the physical and mechanical properties of gypsum plaster composites}, author={Abdel …
Phosphorus Gypsum (PG) based Self-Leveling mortar (GSL) is a green and efficient material for floor construction. Its hydration kinetics, rheology property and their effect on mechanical strength of hydrated GSL were crucial to its final application. This study analyzed the effect on setting time of three retarders, namely Protein Salt (PS), …
Jiang et al. [10] developed a light weight gypsum plaster using pre -swelled bentonite and found that on increase of bentonite, the dry density, compressive strength and flexural strength decreased, while the thermal conductivity of the material increased. Gopinathan et al. [11], evaluated the mechanical and durable performance of gypsum …
Gypsum plaster is made by partial or complete dehydration of the mineral gypsum. Here we have given its properties, advantages and disadvantages. ... Properties of Gypsum Plaster. It is light-weight and …
Kaolin is a natural clay mineral with potential applications as a filler in improving the performance of thermosetting polymers like mechanical properties, …
The results indicate that Elevated temperatures and increasing of exposure duration had passively influenced on hardened properties of both plain and fiber reinforced gypsum. The hardened ...
The main objective of this research was studying of the effect of using fly ash as a partial replacement by weight of both ordinary gypsum plaster and plaster of Paris on some physical properties.
To cite this paper: Hajar Ahmadi Moghadam, Mozafar Jalili Masir, Zahra Bandani Torshaki, Ali Dehghan (2019) Effect of Mixing Rate of Plaster with Water on Properties of Gypsum Plaster. Advance Researches in Civil Engineering 1(1): 42-48. 43 Volume 1, , pages: 42-48 energy used in the process of the paste mixing can accelerate the …
Gypsum (CaSO 4 ·2H 2 O) as a widely used building material needs to have good mechanical strength and low water absorption. This paper investigated the effect …
The role of a polymer as a retarder additive is to enhance workability of the gypsum paste by modifying its setting process and to improve its properties.
Gypsum is a naturally occurring mineral that has been used by humans for various purposes for thousands of years. It is a versatile mineral with a wide range of applications in construction, agriculture, industry, and even art. In this introduction, we'll explore the definition and composition of gypsum.
DOI: 10.1016/J.CONBUILDMAT.2019.01.160 Corpus ID: 139331974; Synergistic effect of mineral admixture and bio-carbonate fillers on the physico-mechanical properties of gypsum plaster
Gypsum has excellent fire resistance, but it is necessary to focus on the behavior of the gypsum composites with fillers at high temperatures because of the influence of fillers on the properties ...
DOI: 10.1016/j.jobe.2019.101075 Corpus ID: 210241956; Comparing the effects of a retarder and accelerator on properties of gypsum building plaster @article{Moghadam2020ComparingTE, title={Comparing the effects of a retarder and accelerator on properties of gypsum building plaster}, author={Hajar Ahmadi …
ABSTRACT Although gypsum plaster has been well studied, there are few related researches on the effects of primers on the pull-off strength of gypsum plaster in the plastering systems.
Materials Science and Engineering, Volume 45, No. 1 (2020), pp. 191–197. DOI: 10.32974.mse.2020.019 THE EFFECT OF THE APPLIED PLASTER/WATER RATIO ON THE TECHNOLOGICAL PROPERTIES OF GYPSUM MOLD
This paper investigated the effect of sodium tiipolyphosphate (STPP) and sodium sulphate (SS) additives on propelTies of gypsum building plaster. For this ptupose, different …
The strength of recycled gypsum plaster increased with the increase of specific surface area, and the low water to plaster ratio and high strength were achieved when the specific surface area was ...
