Graphite tailings and coal gangue (CG) are solid wastes produced by mines. The large accumulation of surface materials poses great harm globally, and resource utilization is …

The massive accumulation of graphite tailings causes serious environmental pollution, mainly from heavy metal pollution. Therefore, this article introduces a method of using graphite tailings as a high-content main material, cement as a small component of the auxiliary cementitious material, and clay as a substitute for cement. …

The composite powders recycled from graphite tailings made a great contribution to the improvement of the tensile strength of SBR, and the particle size of the filler had a significant effect on the tensile property of SBR. The smaller the particle size of the filler, the higher the tensile strength of SBR. Composite powder alone made little ...

The graphite tailing causes serious environmental pollution, and the pollution problem becomes worse and worse with the increase in graphite demands. This paper focuses on …

Graphite tailings (GT) is solid wastes produced in large quantities in the process of graphite mining, but it is also a resource to be developed. ... However, after adding 40% GT, the various absorption peaks of the hydrated product did not change significantly. In summary, a proper combination of GT and RA can change the vibration of the O ...

Graphite tailings were used as the raw materials for the preparation of ed ceramics via a high-temperature self-ing method. The residual carbon in the tailings acted as the ing agent and no additional ing agents were required. The residual carbon reacted with Fe2O3 and produced gas that was wrapped by the liquid …

By observing the microstructure and XRD pattern of the 28-day hydrated mortar block, it was determined that the hydration products of the mortar with graphite tailings as an aggregate included ...

@article{Tan2023InvestigationOP, title={Investigation on preparation and properties of carbon fiber graphite tailings conductive asphalt mixture: A new approach of graphite tailings application}, author={Yiqiu Tan and Wen Wang and Yongjiang Xu and Chao Xing and Zundong Liang and Junjie Zhang}, journal={Construction and Building …

Because the graphite tailings used in the test need to have a smaller particle size, it is necessary to screen the graphite. Effect of bacterial solution concentration on CaCO 3 production. Turbidimetry is a commonly used method for detecting microbial concentration. It is based on the light scattering nature of bacteria in a bacterial solution.

By observing the microstructure and XRD pattern of the 28-day hydrated mortar block, it was determined that the hydration products of the mortar with graphite tailings as an aggregate included ...

When the graphite tailings content was higher than 70%, the interface defects of the aggregate matrix increased, thus making it easier for cracks to propagate along the interface. ... At Stage 3, C 3 S and C 2 S were hydrated to form C–S–H and Ca(OH) 2. Ca–Si–Al film was formed on the surface of silica fume (Figure 23 c).

The main components of graphite tailings contain silicate minerals and residual graphite, which have potential pozzolanic activity and promote the hydration …

Using graphite tailings (GT) to replace part of sand to prepare graphite tailings concrete (GTC) is an effective way to reduce the environmental hazards. ... electronic and hole conduction. With the passage of the curing age, the concrete is gradually hydrated, thus, the ions in the pore solution and the porosity of concrete are …

Hydrated aramid nanofiber network enhanced flexible expanded graphite films towards high EMI shielding and thermal properties. Compos. Sci. Technol. ... and X-ray diffraction (XRD) tests. The experimental results demonstrate that the graphite tailings cured by MICP exhibit commendable wind erosion resistance, water retention, and …

Graphite tailings and coal gangue (CG) are solid wastes produced by mines. The large accumulation of surface materials poses great harm globally, and resource utilization is an urgent problem to be solved. ... The incorporation of hydrated lime can provide sufficient Ca(OH) 2, thereby increasing the efficiency of calcium(-aluminate)-silicate ...

So far, the application of graphite tailings is relatively narrow, mostly used as materials for firing ceramic bricks, and also as aggregates for road subbases [34], [35]. The advanced utilization of graphite tailings mostly focuses on the extraction of heavy metals and the preparation of concrete. It has been noted that graphite tailings ...

3. Results and Discussion 3.1. Macroscopic Property Analysis of GTC 3.1.1. Compressive Strength of GTC. The substitution rate of graphite tailings in concrete is 0% to (in volume percentage), and the mechanical properties are shown in Figure 1.The volume replacement rate in the range of 10% to 20% has a positive effect on the improvement of …

By observing the microstructure and XRD pattern of the 28-day hydrated mortar block, it was determined that the hydration products of the mortar with graphite tailings as an aggregate included ...

DOI: 10.1016/j.conbuildmat.2020.121792 Corpus ID: 230570440; Preparation of autoclaved aerated concrete by using graphite tailings as an alternative silica source @article{Peng2021PreparationOA, title={Preparation of autoclaved aerated concrete by using graphite tailings as an alternative silica source}, author={Yanzhou Peng and …

In this study, the combined effects of different amounts of graphite tailings (GT) as a substitute for sand and three cure methods on the early-age mechanical and material performances of cement mortar …

The particle size analysis of graphite tailing was investigated using 40 and 60 mesh filter screens, and the weight percent of GT which was greater than 350 μm, during 245–350 μm and less than 245 μm were 12.97%, 68.84% and 18.19%, respectively.

Graphite tailings were taken from a graphite tailings depot in Luobei County, Heilongjiang Province, and the actual situation and the graphite tailings scanned via SEM are displayed in Fig. 2.

the 28-day hydrated mortar block, it was determined that the hydration products of the mortar with graphite tailings as an aggregate included ettringite, Ca ... of graphite tailings is quartz, muscovite, and calcite, the SiO2 content was very high. Therefore, Peng et al. [12] used graphite tailings as an alternative silicon source to …

By observing the microstructure and XRD pattern of the 28-day hydrated mortar block, it was determined that the hydration products of the mortar with graphite …

According to the data presented in the table, the porosity of graphite tailings is 41.53%. e natural dry density was 1.613g/cm3. e permeability coecient is 1.101 × 10−4cm/s. Based on the ...

In this study, graphite tailings and basalt fibers were added to cement mortar, and the impact of mixing GT and BF fibers on the mechanical characteristics and drying shrinkage properties of cement mortar were analysed through experimental studies. The hydration of cement mortar was investigated by using techniques such as energy …

The results showed that the concentration of graphite tailings has an important influence on the mechanical, electroconductivity, and material properties of concrete. Finally, a new model for ...

The hydration product stabilized and filled the gaps between the tailing particles, thereby cementing them together. Not only did it improve the mechanical …

The G curve is expressed as the XRD of the expanded graphite raw material. The gold tailings raw material peaks correspond to Sodium Calcium Silicate (PDF No. 23–0671) with Al 2 O 3 ... Properties of fly ash concrete modified with hydrated lime and silica fume. Constr. Build. Mater., 23 (10) (2009), pp. 3233-3239. View PDF View …

By observing the microstructure and XRD pattern of the 28-day hydrated mortar block, it was determined that the hydration products of the mortar with graphite tailings as an aggregate included ...