The effects of expanded perlite aggregate, silica fume and fly ash on the thermal conductivity of lightweight concrete

Demirboğa, Ramazan; Gül, Rüstem

doi:10.1016/s0008-8846(02)01032-3

Cited by 366 publications

(139 citation statements)

References 6 publications

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“…Compressive strength is tested using cube specimens of 100mm x 100mm x 100mm according to BS EN 12390-3:2009 [19] as per shown in Figure 3. Flexural test is also conducted up to the same age of 28 days.…”

Section: Methodsmentioning

confidence: 99%

Determination of Bending and Axial Compression Young’s Modulus of Cellular Mortar Exposed to High Temperatures

Mydin¹,

Mohamad²,

Johari³

et al. 2018

IJET

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This paper focuses on laboratory investigation to scrutinize and portray the Young's modulus of cellular mortar exposed to high temperatures. Two densities of cellular mortar of 600 and 900 kg/m 3 density were cast and tested under axial compression and 3-point bending.The tests were performed at room temperature, 105°C, 205°C, 305°C, 405°C, 505°C, and 605°C. The results of this study consistently indicated that the loss in toughness for cement based material like cellular mortar exposed to high temperatures happens principally after 105°C, irrespective of density of cellular mortar. This specifies that the principal contrivance instigating stiffness deprivation is micro cracking in the cement matrix, which happens as water magnifies and disappears from the porous body. As projected, decreasing the density of cellular mortar diminishes its compressive strength and bending strength. Though, for cellular mortar of different densities, the normalized strength-temperature and Young's modulus-temperature relationships are comparable.

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Section: Methodsmentioning

confidence: 99%

Determination of Bending and Axial Compression Young’s Modulus of Cellular Mortar Exposed to High Temperatures

Mydin¹,

Mohamad²,

Johari³

et al. 2018

IJET

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“…For example, the density of control mixture (0% SPS + 0% FA) was 2171 kg/m 3 , which decreased to 2161 kg/m 3 with 40% FA content in concrete. A recent study [27] observed that the low density of LWAC containing FA is probably related to the higher air content and lack of structure of FA.…”

Section: Effect Of Famentioning

confidence: 98%

Combined Effects of Densified Polystyrene and Unprocessed Fly Ash on Concrete Engineering Properties

Herki

2017

Buildings

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Abstract:The present study evaluated the combined effects of two types of waste materials of expanded polystyrene (EPS) and unprocessed fly ash (FA) on different properties of concrete. A novel recycling technique of densifying waste EPS is used to produce a novel lightweight aggregate (LWA). This new technique has solved the problem of segregation in concrete by coating EPS particles with a natural binder of clay and cement. Nine different concrete mixtures with a water to cement ratio of 0.8 were used. The densified EPS and unprocessed FA were partially replaced with natural aggregate and Portland cement, respectively. The engineering properties, including workability, density, compressive strength, ultrasonic pulse velocity (UPV), and water absorption (WA) were investigated at different curing times. According to the experimental results, there is a decrease in compressive strength and UPV with increasing this novel LWA content in concrete. However, by using a suitable mix design, the utilisation of these two waste materials in concrete using an appropriate recycling technique is possible.

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“…Nowadays, there are many lightweight concrete applications made with natural or artificial lightweight aggregates in the literature [63]- [66]. However, the cost of artificial lightweight aggregate production is high due to requirement of high incineration temperature or thermal treatment [67].…”

Section: A Case Studiesmentioning

confidence: 99%

Utilization of Recycled Polyethylene Terephthalate (PET) in Engineering Materials: A Review

Sulyman¹,

Haponiuk²,

Formela³

2016

IJESD

108

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Abstract-In general, the quantity of plastics of all types consumed annually all over the world has been growing in a phenomenal way. The manufacturing processes, service industries and municipal solid wastes (MSW) generate numerous waste plastic materials. The increasing awareness about the environment has tremendously contributed to the concerns related with disposal of the generated wastes. It is believed that the management of solid waste is one of the major environmental concerns in the world. Due to limited space on landfills and increasing costs of plastics, utilization of waste plastics has become an attractive alternative for disposal. This paper provides a summary of experimental efforts on the utilization of poly(ethylene terephthalate) (PET) in civil engineering projects, mainly in road pavement, cements and concretes. Presented data indicate that use of waste PET for modification of asphalt, cement and concretes improved their selected properties, which makes economical this approach. Furthermore, using of waste PET in building materials reduce usage of new polymeric materials, which has significant effect on environment pollution (e.g. emission of carbon dioxide, waste disposal problems, etc.) Index Terms-Bitumen, building materials, concrete, PET, recycling.

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The effects of expanded perlite aggregate, silica fume and fly ash on the thermal conductivity of lightweight concrete

Cited by 366 publications

References 6 publications

Determination of Bending and Axial Compression Young’s Modulus of Cellular Mortar Exposed to High Temperatures

Determination of Bending and Axial Compression Young’s Modulus of Cellular Mortar Exposed to High Temperatures

Combined Effects of Densified Polystyrene and Unprocessed Fly Ash on Concrete Engineering Properties

Utilization of Recycled Polyethylene Terephthalate (PET) in Engineering Materials: A Review

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