Effect of various glass aggregates on the shrinkage and expansion of cement mortar

Gorospe, Karla; Booya, Emad; Ghaednia, Hossein; Das, Sreekanta

doi:10.1016/j.conbuildmat.2019.03.192

Cited by 69 publications

(19 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results obtained from this experiment were contrary to the principle that the increase of the active aggregate content leads to an increase in the expansion rate [49,67]. The reason for the contradiction might be attributed to the microscopic morphology of the samples [68]. Figure 13 shows the microscopic morphology of green WGS blended mortar matrix under different magnifications.…”

Section: Asr Test Of Wgs-sand Mortarmentioning

confidence: 57%

“…However, ASR results were also influenced by replacement ratios [69] and particle size [70]. morphology of the samples [68]. Figure 13 shows the microscopic morphology of green WGS blended mortar matrix under different magnifications.…”

Section: Asr Test Of Wgs-sand Mortarmentioning

confidence: 99%

“…The ground glass powder could be used as supplementary cementitious materials. The remaining glass cullet could be used as morphology of the samples [68]. Figure 13 shows the microscopic morphology of green WGS blended mortar matrix under different magnifications.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Effective Utilization of Waste Glass as Cementitious Powder and Construction Sand in Mortar

et al. 2020

View full text Add to dashboard Cite

The purpose of this study is to investigate the availability of waste glass as alternative materials in sustainable constructions. Collected waste glass was ground into waste glass powder (WGP) with similar particle size distribution as Portland cement (PC) and waste glass sand (WGS) with similar grade as sand. The compressive strength was investigated through the Taguchi test to evaluate the effect of different parameters on WGP-blended mortar, which include WG-replacement rate (G/B, 0, 10%, 20%, 30%), water/binder ratio (w/b, 0.35. 0.40, 0.50, 0.60), cementitious material dosage (Cpaste, 420, 450, 480, 500 kg/m3), and color of powder (green (G) and colorless (C)). The alkali–silica reaction (ASR) expansion risk of WGS-blended mortar was assessed. The experimental results indicated that WGP after 0.5 h grinding could be used as substituted cement in mortar and help to release potential ASR expansion. The replacement rate played a dominant role on strength at both the early or long-term age. The water/binder ratio of 0.35 was beneficial to the compressive strength at three days and 0.50 was better for strength at 60 and 90 days. An optimal value of cementitious material dosage (450 Kg/m3) exited in view of its strength, while the effect of the color of WG was minor. WGS could be graded as standard construction sand and no ASR expansion risk was found even for 100% replacement of regular sand in mortar. Through the comprehensive reuse of waste glass, this study could provide basic knowledge and a concept for the sustainable development of building materials.

show abstract

Section: Asr Test Of Wgs-sand Mortarmentioning

confidence: 57%

Section: Asr Test Of Wgs-sand Mortarmentioning

confidence: 99%

See 1 more Smart Citation

Effective Utilization of Waste Glass as Cementitious Powder and Construction Sand in Mortar

et al. 2020

View full text Add to dashboard Cite

show abstract

“…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

“…Gorospe vd. [13] harç karışımlarında kum ile çeşitli tipteki cam partiküllerini yer değiştirerek cam partiküllerinin agrega olarak kullanılması durumu için değişen harç özelliklerini araştırdılar. Cam partiküllerinin çimento matrisindeki zayıf adhezyonu sebebiyle harç numunelerinde %32'e kadar varan basınç dayanımı düşüşlerini tespit ettiler.…”

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

View full text Add to dashboard Cite

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.

show abstract

Concrete containing recycled concrete coarse aggregate and crushed glass sand: Mitigating the effect of alkali–silica reaction

Gholampour,

Memarzadeh,

Nematzadeh

et al. 2024

Structural Concrete

View full text Add to dashboard Cite

The utilization of recycled concrete and glass aggregates in concrete production has emerged as a highly promising method to significantly increase the recycling rate of waste materials. However, the interaction between alkaline environment and silica present in concrete detrimentally impacts mechanical properties and durability of the concrete due to the significant silica content of the aggregates. This study aims to develop a high‐performance and sustainable concrete to resist alkali–silica reaction (ASR). The study focuses on the use of a blend of ground granulated blast furnace slag (GGBS) and fly ash (FA) as binder materials to mitigate negative effects of the ASR on the mechanical properties and and durability of concrete made with crushed glass sand and coarse recycled concrete aggregate (RCA). Various tests, including ASR expansion, flow, slump, density, compression, three‐point bending, water absorption, and chloride attack, were conducted. Furthermore, microanalysis using scanning electron microscopy and energy‐dispersive x‐ray spectroscopy was performed. Based on the results, it is found that the GGBS is less effective than the FA in reducing the ASR expansion of the concrete, with only 3%, 9%, and 12% decreased expansion as a result of the addition of 20%, 40%, and 70% GGBS to the concrete containing 30% FA, respectively. It is also shown that combining 20% GGBS with 30% FA in the RCA concrete containing glass sand develops similar compressive and flexural strengths and water absorption compared to that containing natural sand. This can be related to the pozzolanic reaction of the FA and GGBS, which helps to retain the alkalis for reducing the crack development and propagation in the concrete. However, further GGBS content leads to a decrease in the strengths and an increase in the water absorption of the concrete. The results of this study point to the significant potential of combining FA and GGBS at an optimum ratio to mitigate the ASR effect on RCA concretes containing crushed glass sand. This approach helps in minimizing the emission of greenhouse gases and other pollutants generated during cement production, thereby mitigating environmental pollution. Additionally, it helps the preservation of natural resources by reducing the depletion of natural sand and coarse aggregate.

show abstract

Effect of various glass aggregates on the shrinkage and expansion of cement mortar

Cited by 69 publications

References 25 publications

Effective Utilization of Waste Glass as Cementitious Powder and Construction Sand in Mortar

Effective Utilization of Waste Glass as Cementitious Powder and Construction Sand in Mortar

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

Concrete containing recycled concrete coarse aggregate and crushed glass sand: Mitigating the effect of alkali–silica reaction

Contact Info

Product

Resources

About