Properties of wastepaper sludge in geopolymer mortars for masonry applications

Yan, Shi; Sagoe‐Crentsil, Kwesi

doi:10.1016/j.jenvman.2012.07.008

Cited by 70 publications

(39 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As regards other mineral additives, work was carried out on fibres based on silica, aluminium oxide and zirconium [21]. Other mineral additives used in geopolymer composites include diatomaceous earth [22], however, this additive was not introduced in the form of fibres, but grains with a diameter of 1.2 µm and wollastonite, also introduced in the form of micro-additives [23,24].…”

Section: Ricon19 -Remine International Conferencementioning

confidence: 99%

Mechanical Properties of Basalt Fiber Reinforced Fly Ash-Based Geopolymer Composites

Korniejenko

Mucsi

Halyag

et al. 2020

KEG

View full text Add to dashboard Cite

This article analyses the influence of a short basalt fibre admixture on the mechanical properties of geopolymers, especially compressive strength. This preliminary research is the first step towards the development of a composite for fire resistant applications in civil engineering. This study investigates the behaviour of a fly ash based geopolymer containing basalt fibres. Fly ash from the coal power plant ‘Skawina’ (located in: Skawina, Lesser Poland, Poland) was used as the raw material. The chemical composition of this fly ash is typical for class F. Three series of fly ash based geopolymers were cast. In the first, short basalt fibres were added as 1% by weight of fly ash, in the second short basalt fibres were added as 2% by weight of fly ash and the third functioned as a control series without any fibres. Each series of samples were tested on compressive strength after 28, 14 and 7 days, and specimen density was determined. Additionally, microstructural analysis was carried out after 28 days. The results show that the addition of basalt fibres can improve the mechanical properties of geopolymer composites. Keywords: geopolymer, basalt fibre, composites, fire resistance

show abstract

Section: Ricon19 -Remine International Conferencementioning

confidence: 99%

Mechanical Properties of Basalt Fiber Reinforced Fly Ash-Based Geopolymer Composites

Korniejenko

Mucsi

Halyag

et al. 2020

KEG

View full text Add to dashboard Cite

show abstract

“…A limited number of studies have been carried out using paper sludge ashes as a precursor for alkali‐activated cements. Yan et al identified that the partial substitution of fly ash with dried (uncalcined) paper sludge reduced the workability and compressive strength of the alkali‐activated cements; however, it did promote a refinement of the pore structure which led to a reduced drying shrinkage of the material. Antunes Boca Santa et al produced alkali‐activated calcined paper sludge cements blended with coal bottom ashes, as the calcined paper sludge utilised was partially crystalline and not highly reactive.…”

Section: Wastes From Other Industriesmentioning

confidence: 99%

Management and valorisation of wastes through use in producing alkali‐activated cement materials

Bernal

Rodríguez

Kirchheim

et al. 2016

J of Chemical Tech & Biotech

144

View full text Add to dashboard Cite

ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Abstract 15There is a growing global interest in maximising the re-use and recycling of waste, to 16 minimise the environmental impacts associated with waste treatment and disposal. Use 17 of high-volume wastes in the production of blended or novel cements (including alkali-18 activated cements) is well known as a key pathway by which these wastes can be re-19 used. This paper presents a critical overview of the urban, agricultural, mining and 20 industrial wastes that have been identified as potential precursors for the production of 21 alkali-activated cement materials, or that can be effectively stabilised/solidified via 22 alkali activation, to assure their safe disposal. The central aim of this review is to 23 elucidate the potential advantages and pitfalls associated with the application of alkali-24 activation technology to a wide variety of wastes that have been claimed to be suitable 25 for the production of construction materials. A brief overview of the generation and 26 characteristics of each waste is reported, accompanied by identification of opportunities 27 for the use of alkali-activation technology for their valorisation and/or management. 28

show abstract

“…Moreover, the preparation of controlled-low-strength materials could be another possibility for the end-use of these materials (Zhen et al, 2013;Naganathan et al, 2013;Yan and Sagoe-Crentsil, 2012;Lertwattanaruk et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Treatment of toxic metal aqueous solutions: Encapsulation in a phosphate-calcium aluminate matrix

Fernández

Navarro-Blasco

Durán

et al. 2014

Journal of Environmental Management

View full text Add to dashboard Cite

Polyphosphate-modified calcium aluminate cement matrices were prepared by using aqueous solutions polluted with toxic metals as mixing water to obtain wastecontaining solid blocks with improved management and disposal. Synthetically contaminated waters containing either Pb or Cu or Zn were incorporated into phosphoaluminate cement mortars and the effects of the metal's presence on setting time and mechanical performance were assessed. Sorption and leaching tests were also executed and both retention and release patterns were investigated. For all three metals, high uptake capacities as well as percentages of retention larger than 99.9% were measured. Both Pb and Cu were seen to be largely compatible with this cementitious matrix, rendering the obtained blocks suitable for landfilling or for building purposes. However, Zn spoilt the compressive strength values because of its reaction with hydrogen phosphate anions, hindering the development of the binding matrix.

show abstract

Properties of wastepaper sludge in geopolymer mortars for masonry applications

Cited by 70 publications

References 18 publications

Mechanical Properties of Basalt Fiber Reinforced Fly Ash-Based Geopolymer Composites

Mechanical Properties of Basalt Fiber Reinforced Fly Ash-Based Geopolymer Composites

Management and valorisation of wastes through use in producing alkali‐activated cement materials

Treatment of toxic metal aqueous solutions: Encapsulation in a phosphate-calcium aluminate matrix

Contact Info

Product

Resources

About