Experimental investigations of aerogel-incorporated ultra-high performance concrete

Ng, Serina; Jelle, Bjørn Petter; Sandberg, Linn Ingunn Christie; Gao, Tao; Wallevik, Ólafur H.

doi:10.1016/j.conbuildmat.2014.12.064

Cited by 129 publications

(56 citation statements)

References 67 publications

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“…Based on the development of today's chemical industry, advanced materials are highlighted as solid catalysts including aerogel structures that are developed as heterogeneous catalyst or catalyst support in numerous applications. In fact, Kistler is also the first researcher to identify potential aero in catalytic applications and then be studied by other scientists such as Teichner, Baiker, Pajonk, and other groups …”

Section: Introductionmentioning

confidence: 99%

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Shaari

Kamarudin

2019

Int J Energy Res

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Summary Aerogel is known as one of today's 10 advanced structures that have earned a special place in industry or research based on its very high porosity, high active surface area, and low density. There are various methods that can be used to produce it as well as make it easily produced in bulk as subtopics in this paper in Section 2.0. At present, aerogels are widely used in catalytic applications, energy storage, photocatalysts, membrane separation, and fuel cells. Aerogel application in fuel cell has been discussed in Section 3.0 which include carbon‐based aerogel, graphene‐based aerogel, other aerogel based, and non‐noble catalyst with aerogel. This article is a reference for researchers to identify the advantages and opportunities available to lower costs and improve the performance of fuel cell systems that rely heavily on cost‐rich catalysts such as platinum. Opportunities and challenges in developing aerogel structures in the future are also explained in Section 5.0 in this paper.

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Section: Introductionmentioning

confidence: 99%

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Shaari

Kamarudin

2019

Int J Energy Res

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“…This indicates their potential for producing strong lightweight composites. Further, the studies carried out on the influence of aerogels by Hanif et al (2016) and Ng et al (2015) showed that aerogel is ideally suited for thermally insulated composites while the mechanical strength is not high enough because of the mechanical properties of aerogel particles (Woignier and Phalippou 1988).…”

Section: Introductionmentioning

confidence: 99%

“…In the recent years, researchers have also been trying to investigate some other materials like cenosphere (Chávez-Valdez et al 2011;Kwan and Chen 2013;Pichór 2009;Wang et al 2012Wang et al , 2013Wu et al 2015;Xu et al 2015) and aerogel particles (Gao et al 2014;Hanif et al 2016;Kim et al 2013;Ng et al 2015) for their use as LWF. Xu et al found that even though incorporating cenosphere in magnesium oxy-chloride cement composite reduces the compressive strength, still high levels of strength (60 MPa) are achieved (Xu et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Lightweight Functional Fillers for Use in Cementitious Composites

Hanif

Cheng

et al. 2017

Int J Concr Struct Mater

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Abstract:The effects of different lightweight functional fillers on the properties of cement-based composites are investigated in this study. The fillers include fly ash cenospheres (FACs) and glass micro-spheres (GMS15 and GMS38) in various proportions. The developed composites were tested for compressive, flexural and tensile strengths at 10 and 28-day ages. The results indicated that both FACs and GMS38 are excellent candidates for producing strong lightweight composites. However, incorporation of GMS15 resulted in much lower specific strength values (only up to 13.64 kPa/kg m 3 ) due to its thinner shell thickness and lower isostatic crushing strength value (2.07 MPa). Microstructural analyses further revealed that GMS38 and GMS15 were better suited for thermal insulating applications. However, higher weight fraction of the fillers in composites leads to increased porosity which might be detrimental to their strength development.

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“…The combination of the conventional building with the nanosized insulation materials is a well‐known approach . For example, 50% volume of aerogel embedded into the mortar reduced its thermal conductivity by factor 5 . The thermal conductivity of the materials based on the conventional and high‐performance building materials and waste PS nanofiber sheets decreased in the sandwich structures.…”

Section: Resultsmentioning

confidence: 99%

Polystyrene nanofibers for nonwoven porous building insulation materials

Datsyuk

Trotsenko

Peikert³

et al. 2019

Engineering Reports

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The building industry makes a great effort to reduce energy consumption. The use of nanotechnology is one of the approaches to surpassing the properties of conventional insulation materials. In this work, an industrial cost‐effective method to manufacture highly porous materials with excellent thermal insulation properties is described. The materials are prepared from polystyrene recovered from the building sector and electrospun as nanofiber‐based sheets. Varying electrospinning parameters allow controlling the morphology of the produced materials. The materials are obtained with differences in interfiber and inner‐fiber porosity and morphology. The thermal conductivity of the freestanding and compressed materials is evaluated. Those differences affect the insulation performance: the materials with higher interfiber porosity show better thermal insulation in the freestanding state. An increase of the inner‐fiber porosity leads to better insulation in the compressed samples. Insertion of carbon nanomaterials reduces the effects of the infrared Radiation. Nanofiber‐based insulation materials from the recycled expanded polystyrene (EPS) show thermal conductivity values of 20 to 25 mW/mK (ie, 20% to 30% below the thermal conductivity of the commercial EPS). The effect of integrating polystyrene nanofiber sheets into conventional wall‐building materials is also investigated in terms of thermal insulation. The nanofiber insulation sheets are sandwiched between two pieces of the building materials resulting in a drastic increase of the insulation effect. The materials have a great potential in using, for example, as thermal insulation for the restoration of historic buildings in the narrow central parts of the old towns.

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Experimental investigations of aerogel-incorporated ultra-high performance concrete

Cited by 129 publications

References 67 publications

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Current status, opportunities, and challenges in fuel cell catalytic application of aerogels

Effects of Different Lightweight Functional Fillers for Use in Cementitious Composites

Polystyrene nanofibers for nonwoven porous building insulation materials

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