The application of ultra-fine fly ash in the seal coating for the wall of underground coal mine

Song, Huiping; Liu, Jianqiang; Xue, Fangbin; Cheng, Fangqin

doi:10.1016/j.apt.2016.05.028

Cited by 22 publications

(8 citation statements)

References 11 publications

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“…Cebollite is a type of fibrous and sheaf-like aggregates and an orthorhombic mineral with Al, Ca, H, O, and Si. A compact matrix was formed on the UFA-containing coating, which provided a powerful support for its strength and durability [ 36 ]. In addition, the film formation of the base coating was due to the chemical reaction between the emulsion and the cement hydration product through ionic bonding.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Ultrafine Fly Ash-Based Superhydrophobic Composite Coating and Its Application to Foam Concrete

Song

Tang

et al. 2020

Polymers

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The waterproof and thermal insulation property of foamed concrete is very important. In this study, the ultrafine fly ash (UFA)-based superhydrophobic composite coating was applied onto foam concrete. The UFA-based base coating that closely adhered to the concrete initially improved the waterproofness of the test block, and the silane coupling agent-modified UFA-based surface coating further achieved superhydrophobicity. The UFA on the coating surface and the asperities on the surface jointly formed a lotus leaf-like rough micro–nanostructure. The 154.34° water drop contact angle and 2.41° sliding angle on No. 5 coating were reached, indicating that it was a superhydrophobic surface. The water absorption ratios of the composite coating block were 1.87% and 16.6% at 4 h and 7 days, which were reduced by 97% and 75% in comparison with the original foam concrete. The compressive strength and heat conductivity coefficient after soaking for 4 h of the composite coating block were higher than 4.0 MPa and 0.225 W·m−1·K−1, respectively. The UFA-based superhydrophobic composite coating proposed in this study and applied onto foam concrete is simple and cheap, requires no precise instrument, and can be applied in a large area.

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Section: Resultsmentioning

confidence: 99%

Preparation of Ultrafine Fly Ash-Based Superhydrophobic Composite Coating and Its Application to Foam Concrete

Song

Tang

et al. 2020

Polymers

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“…As we described above in the introduction, CEMs with super durability, high corrosion resistance, anti-icing, and other excellent properties are in high demand. Traditional methods such as using seal coating to block the pores of concrete for water repellency would bring about the increase of internal pressure because of the moisture produced within the concrete [82][83][84]. When the internal pressure goes up to the limit, the seal coating will be destroyed, losing the sealing effect.…”

Section: Superhydrophobicity On the Application Of Cemsmentioning

confidence: 99%

Superhydrophobic Civil Engineering Materials: A Review from Recent Developments

Xiang

Fang

et al. 2019

Coatings

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Superhydrophobic surfaces have drawn attention from scientists and engineers because of their extreme water repellency. More interestingly, these surfaces have also demonstrated an infinite influence on civil engineering materials. In this feature article, the history of wettability theory is described firstly. The approaches to construct hierarchical micro/nanostructures such as chemical vapor deposition (CVD), electrochemical, etching, and flame synthesis methods are introduced. Then, the advantages and limitations of each method are discussed. Furthermore, the recent progress of superhydrophobicity applied on civil engineering materials and its applications are summarized. Finally, the obstacles and prospects of superhydrophobic civil engineering materials are stated and expected. This review should be of interest to scientists and civil engineers who are interested in superhydrophobic surfaces and novel civil engineering materials.

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“…The waste mainly comprises residues of magnetic ashes, alumina-silicates in a diversified spatial form, and most especially, the cenospheres -the alumina-silicates in the spherical form. The use of these residues mainly concerns the production of general building materials, road aggregates and materials for filling in inactive mines [6][7][8]. Of all the wastes, cenospheres are the most valuable part, at the same time forming the lowest proportion of the ashes.…”

Section: Introductionmentioning

confidence: 99%

Cenospheres and their application advantages in biomedical engineering - a systematic review

Nakonieczny

Antonowicz

Paszenda

2020

Reviews on Advanced Materials Science

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Aluminum-silicate cenospheres are the most valuable residue present in fly ashes after combusting stone coal. Cenospheres are hollow bodies with desirable engineering properties, such as hardness, low bulk density and complete chemical inertness, thanks to which they can be used in biomedical engineering. The following review presents data on obtaining and processing the material, as well as potential biomedical applications.

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The application of ultra-fine fly ash in the seal coating for the wall of underground coal mine

Cited by 22 publications

References 11 publications

Preparation of Ultrafine Fly Ash-Based Superhydrophobic Composite Coating and Its Application to Foam Concrete

Preparation of Ultrafine Fly Ash-Based Superhydrophobic Composite Coating and Its Application to Foam Concrete

Superhydrophobic Civil Engineering Materials: A Review from Recent Developments

Cenospheres and their application advantages in biomedical engineering - a systematic review

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