Flexural behavior of reinforced concrete beam incorporating waste glass powder

Hama, Sheelan Mahmoud; Mahmoud, Akram S.; Yassen, Mohamed Mahir

doi:10.1016/j.istruc.2019.05.012

Cited by 50 publications

(30 citation statements)

References 14 publications

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“…Moreover, exporting the WG from Australia is also being banned [ 12 ]. Besides, in other countries like UK, USA, Hong Kong, Singapore, the WG recycling rate is less than 50% [ 13 , 14 , 15 ]. The highest recycling rate is reported in EU (73%) [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the high toughness and abrasion resistance nature of glass particles are helpful when used as an effective substitution of natural aggregate in cement and geopolymer concrete. Additionally, the fine glass powder is highly pozzolanic and amorphous, thus can be perfectly introduced into concrete as a partial substitution of binders [ 13 , 15 ]. Most of the previous researches concluded that the fine WG powder helps to increase the pozzolanic reactions in cement-based concrete and contributes to making a densely packed concrete matrix, thus provides high mechanical performances [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

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Waste Glass in Cement and Geopolymer Concretes: A Review on Durability and Challenges

et al. 2021

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Every year, the world is producing around 100 metric tons of waste glass (WG), the majority of them are going to landfills that create massive environmental problems. One approach to solve this problem is to transform waste glass into construction materials. Glass is recyclable; however, the melting temperature of the glass is highly dependent on its colour that requires sorting before recycling. To overcome this challenge, many researchers and end-users are using broken glass in concrete either as a binder or aggregates. While significant investigations have done in this area, however, the outcomes of these studies are scattered, and difficult to reach a firm conclusion about the effectiveness of WG in concrete. In this study, the roles of WG and its impact on microstructural and durability properties for both cement and geopolymer concrete are critically reviewed. This review reveals that the amorphous silica in WG effectively participate to the hydration and geopolymerization process and improve concrete microstructural properties. This behaviour of WG help to produce durable concrete against shrinkage, chemical attack, freeze-thaw action, electrical and thermal insulation properties. The optimum replacement volume of binders or natural aggregates and particle size of WG need to be selected carefully to minimise the possible alkali-silica reaction. This review discusses a wide range of parameters for durability properties and challenges associated with WG concrete, which provides necessary guidelines for best practice with future research directions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Waste Glass in Cement and Geopolymer Concretes: A Review on Durability and Challenges

et al. 2021

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“…Some researchers investigated the structural performance of reinforced concrete beams containing glass waste. Hama et al [28] studied the structural performance of reinforced concrete beams containing waste glass powder as a cement replacement up to 15%. They reported that the load capacity for beams containing 10% and 15% waste glass was higher than the reference beams.…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Reinforced Concrete Beams Incorporating Cathode-Ray Tube (CRT) Glass Waste

et al. 2021

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The performance of reinforced concrete beams in the presence of cathode-ray tube (CRT) glass waste is examined. Four concrete mixes containing 0%, 10%, 20%, and 30% CRT glass waste as partial replacement of sand were prepared. The compressive and flexural strength as well as the modulus of elasticity of concrete were determined. Reinforced concrete beams with varying amounts of CRT glass were prepared and the three-point bending test was conducted. The load-deflection curve as well as the strain distribution along the depth of the beams were determined. Concrete containing CRT glass showed an increase in compressive strength, flexural strength, and modulus of elasticity especially at 10% replacement level. The load carrying capacity of reinforced concrete beam is higher when 10% of sand is replaced with CRT glass compared to the control beam and the beams with 20% and 30% CRT glass substitution. The failure mode of the reinforced concrete beams is flexural failure, and the failure pattern is similar for all beams. Strain distribution showed a better ductility at control beam where the deflection was higher than the other beams at the same load. Numerical analysis was conducted, and comparison was made with the experimental results. The comparison showed the accuracy of the software used, where the results of maximum load capacity and maximum deflection were very similar, and the difference did not exceed 5%. In addition, the tensile damage generated by the numerical analysis was very similar to that obtained by the experimental study.

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“…Cam tozunun harç ve beton karışımlarında kullanılması dünyadaki doğal kum kaynaklarının kullanımını sınırlandırması vasıtasıyla sürdürülebilirlik politikalarına hizmet ederken aynı zamanda numunelerde artan termal yalıtkanlık özellikleri aracılığıyla yapılardaki enerji tüketimini de sınırlandırmaktadır. Öte yandan, cam tozu partiküllerinin prizmatik şekli sebebiyle çimento matrisine olan adhezyonun zayıf olması ve cam partiküllerinin öğütülmesi esnasında oluşan mikro çatlakların varlığı gibi faktörler cam tozu içerikli numunelerde genelde mekanik performans düşüşüne sebep olabilmektedir [13][14][15][16][17][18][19]. Gorospe vd.…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…%100 seviyesinde agrega olarak cam partiküllerinin kullanıldığı karışımlarda zayıf cam partikülü -çimento geçiş bölgesine bağlı olarak basınç ve eğilme dayanımlarında sırasıyla ortalama %20 ve %15 düzeylerinde düşüşler saptadılar. Hama ve diğ, [16] ise en iyi mekanik performans içeriği için cam tozu içeriğinin %10 -15 aralığında olması gerektiğini belirtmişlerdir. Öte yandan; cam tozu içeriği ile çimento esaslı malzemelerde termal yalıtkanlık özellikleri gelişebilmektedir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

Atık Cam Tozu İçeren Alkali – Aktive Edilmiş Cüruf Harçlarının Mekanik, Por Yapısı, Termal Yalıtkanlık ve Mikro Yapı Özellikleri

Bostancı

2022

Politeknik Dergisi

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Enerji ve doğal kaynak tüketiminin sınırlandırılması fikri, günümüzdeki sürdürülebilirlik politikalarının odak noktasını oluşturmaktadır. Yüksek enerji gereksinimleri ve doğal kaynak tüketimleri sebebiyle çimento harçları için alternatif arayışı her geçen gün artmaktadır. Bu amaçla; bu çalışmada alkali-aktive edilmiş cüruf harçlarında atık cam tozu ilavesinin harç numunelerinin mekanik, por yapısı, termal iletkenlik ve mikro yapı özelliklerine olan etkisi araştırılmıştır. Atık cam tozu, harç karışımlarında ağırlıkça %15, %30 ve %45 oranlarında doğal kum ile yer değiştirilmiş ve tüm harç karışımlarında bağlayıcı malzeme içeriğinde çimento yerine ağırlıkça %50 oranında da cüruf tercih edilmiştir. Çalışmadan elde edilen sonuçlar, %15 seviyesindeki kum-atık cam tozu yer değişimi için sınırlı düzeydeki mekanik dayanım düşüşü ile termal yalıtkanlık özelliklerinin %35 düzeyinde artabileceğini ortaya koymuştur. Atık cam tozu katkılı alkali-aktive edilmiş cüruf harçları, üstün termal yalıtkanlık özellikleri ve sürdürülebilirlik politikalarına uyumlu çevre dostu özellikleri ile gelecekte çimento harçları yerine kullanılabilecek potansiyeli işaret etmektedir. Anahtar Kelimeler: Cüruf, cam tozu, alkali aktive edilmiş harç, termal iletkenlik, tokluk.

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Flexural behavior of reinforced concrete beam incorporating waste glass powder

Cited by 50 publications

References 14 publications

Waste Glass in Cement and Geopolymer Concretes: A Review on Durability and Challenges

Waste Glass in Cement and Geopolymer Concretes: A Review on Durability and Challenges

Structural Performance of Reinforced Concrete Beams Incorporating Cathode-Ray Tube (CRT) Glass Waste

Atık Cam Tozu İçeren Alkali – Aktive Edilmiş Cüruf Harçlarının Mekanik, Por Yapısı, Termal Yalıtkanlık ve Mikro Yapı Özellikleri

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