Durability of concrete incorporating non-ground blast furnace slag and bottom ash as fine aggregate

Yüksel, İsa; Bilir, Turhan; Özkan, Ömer

doi:10.1016/j.buildenv.2006.07.003

Cited by 192 publications

(59 citation statements)

References 5 publications

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“…Relatively more CO 2 is emitted when high-strength concrete is used because the amount of cement used is increased compared to normal strength concrete. In order to solve this problem, methods such as substitution of a portion of the cement with industrial waste such as blast furnace slag have been proposed [36,37]. This study assumed a mixture with 20% blast furnace slag in the cement.…”

Section: Quantifying the Reduction Of Co 2 Emissions By Using High-stmentioning

confidence: 99%

Life Cycle CO2 Assessment by Block Type Changes of Apartment Housing

et al. 2016

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Abstract:The block type and structural systems in buildings affect the amount of building materials required as well as the CO 2 emissions that occur throughout the building life cycle (LCCO 2 ). The purpose of this study was to assess the life cycle CO 2 emissions when an apartment housing with 'flat-type' blocks (the reference case) was replaced with more sustainable 'T-type' blocks with fewer CO 2 emissions (the alternative case) maintaining the same total floor area. The quantity of building materials used and building energy simulations were analyzed for each block type using building information modeling techniques, and improvements in LCCO 2 emission were calculated by considering high-strength concrete alternatives. By changing the bearing wall system of the 'flat-type' block to the 'column and beam' system of the 'T-type' block, LCCO 2 emissions of the alternative case were 4299 kg-CO 2 /m 2 , of which 26% was at the construction stage, 73% was as the operational stage and 1% was at the dismantling and disposal stage. These total LCCO 2 emissions were 30% less than the reference case.

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Section: Quantifying the Reduction Of Co 2 Emissions By Using High-stmentioning

confidence: 99%

Life Cycle CO2 Assessment by Block Type Changes of Apartment Housing

et al. 2016

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“…The industrial by-products or the solid wastes such as FA, bottom ash, slag, silica fume and waste glass can also be used as mineral admixture or as fine aggregate in concrete in order to improve some properties of concrete or mortars, while other properties can be affected negatively [15][16][17][18][19][20][21]. For instance, GBFS usage as fine aggregate can make it possible to produce durable concrete due to its mechanical, physical and chemical properties even if this reduces the compressive or flexural strengths due to its physical properties [15][16][17].…”

Section: Drying Shrinkage and Crackingmentioning

confidence: 99%

Prediction of restrained shrinkage crack widths of slag mortar composites by Takagi and Sugeno ANFIS models

Bilir

Gençel

Topçu

2015

Neural Comput & Applic

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Shrinkage is an important parameter affecting crack development of mortars and concrete. With the occurrence of shrinkage cracks, the concrete starts to be exposed to the corrosion which significantly decreases the durability of concrete or mortars. In this study, the results of free shrinkage tests determining the length changes and ring test determination of the restrained drying shrinkage cracks are used for predicting the crack widths of granulated blast furnace slag fine aggregate mortars using adaptive-network-based fuzzy inference system (ANFIS). Subsequently, replacement ratios, drying time and free shrinkage length changes are used as inputs and crack width as output in order to predict the shrinkage cracking of these mortar types. The experimental test and the prediction results from the ANFIS model are compared with each other. It is clear that ANFIS can be employed directly in the prediction or discussion of the drying shrinkage cracks.

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“…Yüksel vd. [16], ince agrega olarak kullanılan AKAK'ın betonun porozitesini arttırdığını ve AKAK kullanımı ile dayanıklı beton üretiminin mümkün olduğunu belirtmişlerdir. Nataraj vd.…”

Section: Introductionunclassified

Atik Kazan Alti Külü Ve Pomza Elek Alti Atiğindan Geopoli̇mer Yapi Malzemesi̇ Üreti̇mi̇

Doğan-Sağlamtimur

Bilgil

2018

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZPomza üretimi sırasında elek altı olarak tarif edilen ince malzeme açığa çıkmaktadır ve atık malzeme durumundadır. Endüstrilerde kömür yakılması sonrası açığa çıkan kazan altı külü de depolanamaz bir atıktır. Bu çalışmada atık değerlendirme amacıyla bu iki tip atık, alkali bir aktivatör olan sodyum hidroksit (NaOH) ile aktive edilerek geopolimer yapı malzemesi üretilmiştir. Deneysel çalışmada %50 atık kazan altı külü (AKAK)+%50 pomza elek altı atığı (PEAA) karıştırılarak oluşturulan atık dolgu malzemesine ağırlıkça %10, 15, 20 ve 25 oranında NaOH ilave edilmiştir. Numuneler 70, 100 ve 150 °C'ye ayarlanan etüvde 24 saat süresince kürlenmiştir. Daha sonra numunelerin fiziksel ve mekanik özellikleri belirlenmiştir. Basınç dayanım değerlerine göre optimum sonuç, %20 NaOH aktivatörlü 100 °C'de kürlenen numunede 16,5 MPa olarak bulunmuştur. Basınç dayanımlarında 28 günün sonunda 7 günlük değerlere göre %6-9 oranında artış gözlenmiştir. Su emme ve porozite değerlerinde, diğer yapı malzemelerine benzer sonuçlar elde edilmiştir. Atık malzeme esaslı NaOH aktivatörlü numunelerden dış tesirlere dayanıklı geopolimer yapı malzemesi üretilebilmiştir.Anahtar kelimeler: Atık yeniden kullanımı, geopolimer, kazan altı külü, pomza, yapı malzemesi GEOPOLYMER BUILDING MATERIAL PRODUCTION FROM WASTES OF BOTTOM ASH AND PUMICE ABSTRACTDuring pumice production, fine material that is stayed under the sieve is exposed as waste material. Bottom ash released into the air after burning coal in the industry is a non-deposit waste. In this study, for the aim of waste reuse, these two types of wastes were activated with sodium hydroxide (NaOH), an alkaline activator, and geopolymer building material was produced. In the experimental study, 10%, 15%, 20% and 25% NaOH were added to the filler material which was formed by mixing 50% waste bottom ash+50% pumice waste to produce geopolymer samples. The samples were cured in the oven that was set at 70, 100 and 150°C for 24 hours. Physical and mechanical properties of the samples were then determined. According to the compressive strength values, the optimum result was found to be 16.5 MPa in the sample activated with 20% NaOH cured at 100°C.Compressive strength values were increased (6-9%) in the samples at 28-day as compared to 7-day. Water absorption and porosity values were similar to those of other building materials. Geopolymer building material that is resistant to external influences can be produced from waste-based samples including NaOH activator.

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Durability of concrete incorporating non-ground blast furnace slag and bottom ash as fine aggregate

Cited by 192 publications

References 5 publications

Life Cycle CO2 Assessment by Block Type Changes of Apartment Housing

Life Cycle CO2 Assessment by Block Type Changes of Apartment Housing

Prediction of restrained shrinkage crack widths of slag mortar composites by Takagi and Sugeno ANFIS models

Atik Kazan Alti Külü Ve Pomza Elek Alti Atiğindan Geopoli̇mer Yapi Malzemesi̇ Üreti̇mi̇

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