Effect of Chopped Carbon Fibre (CCF) on enhancing the compressive strength and density of gypsum plaster

Jameel, Mohammed Abid; Al-Asadi, Laith S. M.; Hacheem, Zuhair Abd; AL-Ridha, Ahmed S. D.

doi:10.1016/j.matpr.2022.05.108

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…It is interesting to observe the compressive strength of other plaster systems as reported in the literature. The lime plasters have a compressive strength of about 20 MPa for curing at a temperature of 100 • C and about 30 MPa at 200 • C [51], while the gypsum plasters feature compressive strengths of about 10 MPa after powder hydration [52,53]. The addition of short fibers [50] or microstructural activators might enhance the gypsum plaster's compressive strength at 20-30 MPa [54], achieving comparable values to the lime plasters.…”

Section: Discussionmentioning

confidence: 99%

Microstructural Investigations Regarding Sustainable Recycling of Ceramic Slurry Collected from Industrial Waste Waters

Avram,

Barbu Tudoran,

Cuc

et al. 2024

Sustainability

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Ceramic slurry wastes have a significant hazardous potential when dumped. Their recycling as raw material is a sustainable approach for the development of nature-friendly applications. The microstructure and mechanical properties play a key role in the success of this sustainable recycling. Ceramic slurry samples resulting from the wall and floor tiles production facility were analyzed. The mineral composition was investigated by XRD combined with mineralogical microscopy and the microstructure was investigated by SEM microscopy coupled with EDX spectroscopy and elemental mapping. The ceramic slurry contains: quartz, kaolinite, mullite and small amounts of lepidocrocite. Quartz and mullite particles have sizes in the range of 5–100 μm and kaolinite has small particles of around 1 to 30 μm. Iron hydroxide crystallized as lepidocrocite is finely distributed among kaolinite aggregates. It makes the slurry unable to be reused in the technological process because of the glaze staining risk, but it does not affect the material cohesion. Thus, the cylindrical samples were prepared at progressive compactions rates as follows: 1808.55; 1853.46; 1930.79 and 2181.24 kg/m3 and dried. Thereafter, were subjected to a compression test with a lower compression strength of 0.75 MPa for lower density and a higher strength of 1.36 MPa for the higher density. Thus, slurry compaction enhances the kaolinite binding ability. The Young’s Modulus slightly decreases with the compaction increasing due to local microstructure rigidizing. This proves the binding ability of kaolinite, which properly embeds quartz and mullite particles into a coherent and resistant structure. The fractography analysis reveals that fracture starts on the internal pores at low compaction rates and throughout the kaolinite layer in the samples with high compactness. The observed properties indicate that the investigated ceramic slurry is proper as a clay-based binder for sustainable ecological buildings, avoiding the exploitation of new clay quarries. Also, it might be utilized for ecological brick production.

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Section: Discussionmentioning

confidence: 99%

Microstructural Investigations Regarding Sustainable Recycling of Ceramic Slurry Collected from Industrial Waste Waters

Avram,

Barbu Tudoran,

Cuc

et al. 2024

Sustainability

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“…Thus, the use of small aggregates in the form of ash and slag waste components has a positive effect on the strength characteristics of artificial stone on alternative types of binder [ 36 , 37 , 38 , 39 ], i.e., its use is possible not only in systems based on a cement binder, as noted in [ 40 ], and concrete [ 41 , 42 ]. As a rule, a positive effect is due not only to packing density [ 43 ], but also to a change in the morphology of gypsum crystals formed during hydration and curing [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of Aluminosilicate Ash Microspheres from Waste Ash and Slag Mixtures in Gypsum-Lime Compositions

et al. 2023

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The article considered the issues of the modification of gypsum stone to improve its performance properties. The influence of mineral additives on the physical and mechanical characteristics of the modified gypsum composition is described. The composition of the gypsum mixture included slaked lime and an aluminosilicate additive in the form of ash microspheres. It was isolated from ash and slag waste from fuel power plants as a result of their enrichment. This made it possible to reduce the carbon content in the additive to 3%. Modified compositions of the gypsum composition are proposed. The binder was replaced with an aluminosilicate microsphere. Hydrated lime was used to activate it. Its content varied: 0, 2, 4, 6, 8 and 10% of the weight of the gypsum binder. Replacing the binder with an aluminosilicate product for the enrichment of ash and slag mixtures made it possible to improve the structure of the stone and increase its operational properties. The compressive strength of the gypsum stone was 9 MPa. This is more than 100% higher than the strength of the control composition of gypsum stone. Studies have confirmed the effectiveness of using an aluminosilicate additive—a product of enrichment of ash and slag mixtures. The use of an aluminosilicate component for the production of modified gypsum mixtures allows the saving of gypsum resources. Developed formulations of gypsum compositions using aluminosilicate microspheres and chemical additives provide the specified performance properties. This makes it possible to use them in the production of self-leveling floors, plastering and puttying works. Replacing traditional compositions with a new composition based on waste has a positive effect on the preservation of the natural environment and contributes to the formation of comfortable conditions for human habitation.

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Effect of chopped carbon fibers (CCF) and water to gypsum ratio on the compressive strength and density of gypsum plaster

Hussein

2023

Recent Advances in Industry 4.0 Technologies

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Effect of Chopped Carbon Fibre (CCF) on enhancing the compressive strength and density of gypsum plaster

Cited by 7 publications

References 27 publications

Microstructural Investigations Regarding Sustainable Recycling of Ceramic Slurry Collected from Industrial Waste Waters

Microstructural Investigations Regarding Sustainable Recycling of Ceramic Slurry Collected from Industrial Waste Waters

The Use of Aluminosilicate Ash Microspheres from Waste Ash and Slag Mixtures in Gypsum-Lime Compositions

Effect of chopped carbon fibers (CCF) and water to gypsum ratio on the compressive strength and density of gypsum plaster

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