Resource utilization and development of phosphogypsum-based materials in civil engineering

Qin, Xiantao; Cao, Yihu; Guan, Haowei; Hu, Quan; Liu, Zhihao; Xu, Jing; Hu, Bo; Zhang, Zeyu; Luo, Rong

doi:10.1016/j.jclepro.2023.135858

Cited by 80 publications

(16 citation statements)

References 113 publications

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“…However, in countries where deposits of NG are limited, gypsum-bearing wastes from various industrial enterprises, such as phosphogypsum, citrogypsum, FGD-gypsum, etc., can be used as an alternative source for gypsum binder production [6][7][8][9][10]. The most large-tonnage of the above-mentioned wastes is phosphogypsum (PG), the annual production of which in the world is ≈300 million tons [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…PG is a primary by-product formed during the production of phosphoric acid and an intermediate product in the production of phosphate fertilizers from phosphate rock (calcium phosphate or apatite) [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the fact that PG is mainly represented by calcium sulfate dihydrate (CaSO 4 2H 2 O) (Reaction (2)) [13], it also contains impurities of phosphorus, fluorine, organic substances, heavy metals, radioactive substances, etc. [11,14], which can have an ambiguous effect on the quality of gypsum materials. Therefore, PG, as a gypsum-bearing resource, requires additional, more detailed study.…”

Section: Introductionmentioning

confidence: 99%

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The Use of Phosphogypsum as a Source of Raw Materials for Gypsum-Based Materials

Levickaya,

Alfimova,

Nikulin

et al. 2024

Resources

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Gypsum binders and the products based on them are widely in demand in the construction materials market, which is due to their easy production technology, lower energy consumption, and low environmental impact in relation to Portland cement. Not only natural gypsum (NG), but also phosphogypsum (PG), which is a by-product of the synthesis of orthophosphoric acid from phosphorite rock, can be used as a source of raw materials for the production of gypsum materials. PG is produced annually in large quantities throughout the world. In chemical composition, PG mainly consists of calcium sulfate dihydrate CaSO4·2H2O, so it is a good potential analogue of natural gypsum, which is used as the main component of gypsum building materials. Thus, the useful recycling of PG as a technogenic resource with valuable properties will expand the raw material base for the production of gypsum materials. This approach to handling technogenic resources fits well with the principles of a circular economy. However, like any technogenic resource, PGs from different enterprises normally differ in their deposits of the original phosphate rock and production technologies. Therefore, PG contains a large number of undesirable impurities, the proportion and composition of which vary over a wide range. This feature does not allow for predicting the properties of PG-based materials without a preliminary detailed study of PG. This research was aimed at carrying out a comprehensive study of the characteristics of PGs from three different industrial plants to evaluate their relationship with the properties of gypsum materials based on them. It was found that PGs have significant differences in their structural and morphological characteristics both in relation to each other and in relation to NG. Also, binders based on PG and NG have significant differences in their physical properties. The average density, compressive strength, and flexural strength for the PG binders with equal workability are lower than those of NG binders. At a water/solid ratio (W/S) < 0.7, all PG binders exhibit comparable compressive strength to NG binders. Thus, PG can act as an alternative to natural gypsum in gypsum binders.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Use of Phosphogypsum as a Source of Raw Materials for Gypsum-Based Materials

Levickaya,

Alfimova,

Nikulin

et al. 2024

Resources

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“…Replacing some cement with phosphogypsum can effectively reduce carbon dioxide emissions, thus aiding in the building materials industry's goal to reach carbon peak as soon as possible (Chernysh et al, 2021;Meskini et al, 2021;Amrani et al, 2020;Pliaka and Gaidajis, 2022). Research in China has found that phosphogypsum can replace between 10% and 50% of cement content to produce lightweight foam concrete, using existing technology for the comprehensive utilization of phosphogypsum resources (Calderon-Morales et al, 2021;Li et al, 2022;Xiantao et al, 2023). This lightweight material offers excellent sound insulation and superior resistance against cracking, earthquakes, and water damage.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Impact Performance of Phosphogypsum Foam Concrete

Kaka Khel,

Yang,

Peng

et al. 2023

Smart Manufacturing and Material Processing (SMMP)

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To mitigate environmental pollution and address the issue of solid waste phosphogypsum materials, cement is utilized as a binding agent alongside various building materials to create Phosphogypsum Foam Concrete(PFC), commonly used in construction. This study focuses on the use of PFC infilled walls as the subject of investigation. The general finite element software ABAQUS was utilized to select the optimal plastic damage and elastoplastic constitutive models for concrete and reinforcement, respectively. A physical model of a 400mm*400mm*20mm PFC slab was established, and an impact load was applied to it via four-sided consolidation. By numerically studying the response of concrete under impact, by altering its strength, reinforcement ratio, and impact speed, and qualitatively analyzing the impact load, deformation, and energy dissipation of various parameter variables, a theoretical basis for the optimization and design method of PFC infilled wall is provided.

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“…Subsequently, beta-hemihydrate gypsum (β-CaSO 4 -0.5H 2 O) and alpha-hemihydrate gypsum (α-CaSO 4 -0.5H 2 O) can be obtained using different calcination methods. According to the various qualities of phosphate ore, 1 ton can yield about 4-6 tons of phosphogypsum [1,2]. China is a significant producer of phosphogypsum production; the annual growth rate of phosphogypsum is about 70 million metric tons, of which the comprehensive utilization rate is only 15 percent.…”

Section: Introductionmentioning

confidence: 99%

Effects of Sodium Gluconate on the Fluidity and Setting Time of Phosphorus Gypsum-Based Self-Leveling

Shen,

Ding,

Chen

et al. 2023

Buildings

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To comprehensively utilize industrial by-products of gypsum while reducing the consumption of natural river sand, this experiment was conducted to prepare gypsum-based sandless self-leveling (PGSL) materials by using phosphorus-building gypsum (PBG) and portland cement (PC) as gelling raw materials with the addition of polycarboxylate superplasticizer (PCE), cellulose ethers (CE), and retarders. However, employing phosphogypsum as the source material results in a significant 30 min fluidity loss in the gypsum-based self-leveling system. Therefore, to enhance the flow characteristics of gypsum self-leveling, sodium gluconate was chosen for usage in this research. The impact of single and compound mixing of protein-based retarder (PR) and sodium gluconate (SG) on gypsum-based sandless self-leveling materials was evaluated in terms of heat of hydration analysis, pore structure, fluidity, strength, and setting time. According to the experimental findings, it was possible to considerably decrease the fluidity loss of gypsum-based sandless self-leveling materials, postpone the setting time, boost strength, and enhance pore structure when combined with 0.4% SG and 0.03% PR.

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Resource utilization and development of phosphogypsum-based materials in civil engineering

Cited by 80 publications

References 113 publications

The Use of Phosphogypsum as a Source of Raw Materials for Gypsum-Based Materials

The Use of Phosphogypsum as a Source of Raw Materials for Gypsum-Based Materials

Numerical Study on Impact Performance of Phosphogypsum Foam Concrete

Effects of Sodium Gluconate on the Fluidity and Setting Time of Phosphorus Gypsum-Based Self-Leveling

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