High strength phosphogypsum and its use as a building material
DOI: 10.1063/1.2991234 Corpus ID: 135090300; High strength phosphogypsum and its use as a building material @inproceedings{Kanno2008HighSP, title={High strength phosphogypsum and its use as a building material}, author={Wellington Massayuki Kanno and Hebert Lu{'i}s Rossetto and Milton Ferreira de Souza and Marcelo Francis …
The Use of Phosphogypsum as a Source of Raw Materials …
Only 15% of all phosphogypsum produced in the world is recycled; the remaining volume is stored or dumped into water reservoirs, which causes significant damage to the environment [].In this connection, the search for ways to use PG as a resource for the production of gypsum binders is a promised trend that will solve the …
Present Situation and Development of Building Material …
Phosphogypsum; Building Materials; Application; Prospect. 1. Introduction Phosphogypsum is a solid waste produced by phosphate fertilizer process, which is gray-white or gray-black powder. About 4.5-5t phosphogypsum is produced per 1t phosphoric acid. It is an acid by-product. Due to the complex and harmful impurity components, …
Phosphogypsum
Valorization of phosphogypsum in cement-based materials: Limits and potential in eco-efficient construction. Bianca R.S. Calderón-Morales, ... Rafael García-Tenório, in Journal of Building Engineering, 2021. Abstract. Phosphogypsum (PG) is a type of synthetic gypsum generated during the production of phosphoric acid. Each ton of phosphoric …
Valorization of phosphogypsum in cement-based materials…
Although phosphogypsum has NORM characteristics, over the years, research has been conducted to make possible using it as a building material component [32, 33] or as fertilizer [34]. The valorization of phosphogypsum is an active research field, and therefore, constant advances are performed to use it as recycled material, with …
Investigation of a durable gypsum binder for building materials
National Seminar on Building Materials - Their Science and Technology New 5 Delhi, India, Vol IIC(A) (1982) 1-5 Singh, M Effect of phosphogypsum impurities on the morphology and physical characteristics of set plaster. 9th CIB Congr Stockholm, Sweden (1983) 239-250 6 Singh, M Utilization of phosphogypsum for building materials.
Phosphogypsum – An Industrial Byproduct with Value
Use in Construction and Building Materials. Phosphogypsum has also been studied for use in construction and building materials. Use in such applications is always attractive for industrial by-products, as it provides an outlet for mass utilization, which is often a key requirement of waste reuse. Furthermore, as the world continues to grow and ...
Recent research in utilization of phosphogypsum as building …
Phosphogypsum (PG) is a byproduct of the wet manufacturing process for phosphoric acid and is considered an industrial waste material. Around 5 tonnes of PG are generated for every 1 tonne of phosphoric acid production [1].As the phosphorus …
Evaluation of Thermal and Mechanical Properties of ed Phosphogypsum …
As detrimental byproduct waste generated during the production of fertilizers, phosphogypsum can be harmlessly treated by producing phosphogypsum-based cementitious materials (PGCs) for offshore well cementing in hydrate reservoirs. To be specific, the excellent mechanical properties of PGCs significantly promote wellbore …
The Development of a New Phosphogypsum-Based …
During the process of preparing PG for use as a building and/or decoration material, phosphogypsum changed from a hydration level of ½ and 2 (PGF and PGW, …
High Strength Phosphogypsum and Its Use as a Building …
A new process (patent applied) that works equally well with both plaster of mineral gypsum and phosphogypsum for the preparation of gypsum components, …
Preparation of Load-Bearing Building Materials from Autoclaved
The application of phosphogypsum in building materials can consume waste phosphogypsum and reduce ecological pressure. In this study, building phosphogypsum was used as the base material, and fly ...
The Development of a New Phosphogypsum …
Phosphogypsum (PG) is a waste (or by-product) of the production of phosphoric acid, a basic constituent in the manufacturing of modern fertilizers. The annual production of phosphogypsum in …
The treatment of phosphogypsum with zeolite to use it in binding material
Ultrasonic treatment of phosphogypsum paste makes soluble impurities to disperse from crushed phosphogypsum crystals, i.e. the phosphate and fluoride films are disrupted, pH drops from 4.97 to 4.86 or 4.72 and the 138 D. Nizevičienė et al. / Construction and Building Materials 180 (2018) 134–142 Fig. 2.
Properties of Cemented Filling Materials Prepared from Phosphogypsum …
Phosphogypsum (PG) occupies a large amount of land due to its large annual production and low utilization rate, and at the same time causes serious environmental problems due to toxic impurities. PG is used for mine backfill, and industrial solid waste is a curing agent for PG, which can save the filling cost and reduce …
Valorization of phosphogypsum in cement-based materials: …
Although phosphogypsum has NORM characteristics, over the years, research has been conducted to make possible using it as a building material …
(PDF) The using of waste phosphogypsum and …
from Oman. Build Environ 2005;40(6):681–7. ... Using PG waste to produce environmentally friendly building materials is becoming a desirable waste recovery method. ... The use of phosphogypsum ...
Research on the Performance of Phosphorus Building …
The phosphogypsum was first roasted into construction gypsum following the national standard GB/T 9776–2008, and then the gypsum-based material properties were investigated in all aspects by using various admixtures and adjuvants, and the gypsum-based material properties such as standard consistency, setting time, …
Phosphogypsum circular economy considerations: A critical …
Phosphogypsum (PG) is the primary byproduct generated during the production of phosphoric acid, an intermediate product in phosphate fertilizer production, from calcium phosphate (apatite) ore. ... The texture of the PG is particularly important for its potential use as a building material. For example, in the plaster industry only certain ...
Phosphogypsum-based building materials: Resource …
Phosphogypsum slag-based composite cementitious materials were prepared by using phosphogypsum and slag powder as the main raw materials, adding quicklime, lithium slag, steel slag and other admixtures, and adding NaOH, NaHCO 3 and triethanolamine (TEA). The effects of different admixtures on the fluidity, setting time and …
Florida needs more research on …
The study also stressed phosphogypsum's durability as a building material. Still, it ends by calling for more research into techniques to scale up purification processes to make use of phosphogypsum both safe …
ADVANTAGES AND DISADVANTAGES OF USING PHOSPHOGYPSUM AS BUILDING
The natural radioactivity level in the waste-phosphogypsum could be a restriction for its use as building material, but this drawback could be avoided controlling its percentage in the cement preparation and the natural radioactivity level of the other raw materials used in its production, in addition to the calculation of the Ra-equivalent ...
Construction and Building Materials
1. Introduction. Phosphogypsum (PG) is a waste obtained through the chemical reaction of sulfuric acid with phosphate rock during the production of phosphoric acid [1].PG is composed mainly of gypsum (CaSO 4 ⋅2 H 2 O), but contains also small amounts of impurities such as phosphorus pentoxide, organic matter, heavy metals, and …
The treatment of phosphogypsum with zeolite to use it in binding material
1. Introduction. Phosphogypsum (PG) is an acidic by-product of the phosphate fertilizer industry. Large quantities of the phosphogypsum are produced world-wide and it is estimated that more than 250 million tons will be produced annually [1].Although phosphogypsum is mainly CaSO 4 ·2H 2 O, it contains elevated levels of …
Phosphogypsum as a construction material | Request PDF
Request PDF | Phosphogypsum as a construction material | Phosphogypsum (PG) is a by-product from the industry of phosphate fertilizer. …
Assessment of the radiological impacts of treated phosphogypsum …
The radium equivalent activity (Raeq), gamma index (I γ ), alpha index (I α ), absorbed gamma dose rate (D in), and corresponding annual effective dose (E in) were evaluated for public exposure ...
High Strength Phosphogypsum and Its Use as a Building Material
A new process (patent applied) that works equally well with both plaster of mineral gypsum and phosphogypsum for the preparation of gypsum components, UCOS, has been developed. The process consists of the following steps: humidification of plaster by fine water droplets, uni-axial compression, hydration reaction and drying. Strong hydrogen …
Advantages and disadvantages of using phosphogypsum as building
The mixture of phosphogypsum with normal gypsum can dilute the concentrations of natural radionuclides allowing the use of the mixed building materials to be safe from a radiological point of view ...
Phosphogypsum: potential uses and problems – …
The material has therefore, tried to incorporate in cement manufacturing considering its sustainable use. Phosphogypsum could be used as a substitute of natural gypsum in the production of ...
Low cost and high efficiency utilization of hemihydrate phosphogypsum …
1. Introduction. Dihydrate-wet and hemihydrate-wet process are the main phosphoric acid production methods, the chief by-products of which are dihydrate phosphogypsum (referred to as phosphogypsum, PG) and hemihydrate PG (HPG), respectively [1].As we all know, PG, the main phase of which is CaSO 4 ·2H 2 O, cannot …