Effects of Waste Glass Powder on Properties of Self-Compacting Repair Mortars

Benyahia, Amar; Boubekeur, Toufik

doi:10.4028/p-1eiar8

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…Amar et al 23 conducted a study to investigate the impact of waste glass powder dosage on the fresh and hardened properties of self-compacting repair mortar mixes. The findings revealed that the addition of glass powder had an adverse effect on the workability of the mortar.…”

Section: Introductionmentioning

confidence: 99%

Evolutionary patterns and microscopic mechanisms of strength in mine tailings backfilled with waste glass

Deng,

Gao,

Chen

et al. 2024

Sci Rep

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In order to promote the sustainable use of resources and reduce the waste of waste glass and tailings resources. The present study focuses on a fluorite mine as the research subject, utilizing coarse tailings, fine tailings, cement substitute-curing agent, and recycled waste glass as the primary raw materials. It investigates the changes in compressive strength of coarse tailing with varying sand- binder ratios and glass content at 3-day, 7-day, and 28-day intervals when the filling slurry concentration is set at 77% and the ratio of coarse tailings to fine tailings is maintained at 2:1. The findings indicate that there is minimal impact on the compressive strength of test blocks when using a sand binder ratio of 4:1 and a glass sand content below 10%. However, once the glass sand content exceeds 10%, a significant decline in compressive strength occurs. Scanning electron microscope (SEM) images reveal ettringite crystal formation in test blocks with both 0% and 25% glass sand content due to high levels of Na2O in the glass sand. This leads to internal expansion within test blocks resulting in reduced strength. Notably, when using a sand-binder ratio of 8:1 along with a glass sand content of 25%, early strength characteristics are observed for test blocks. Furthermore, incorporating glass sand has little influence on late-stage strength for backfill when employing either an 8:1 or 12:1 sand-binder ratio. Based on this experiment conducted under conditions including mass concentration of 77%, the optimal waste-glass-to-mine-tailings-filling-sand-binder-ratio is determined as 8:1with a corresponding glass content of 25%.

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Section: Introductionmentioning

confidence: 99%

Evolutionary patterns and microscopic mechanisms of strength in mine tailings backfilled with waste glass

Deng,

Gao,

Chen

et al. 2024

Sci Rep

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Evaluation of the Performance of Fiber-Reinforced Mortars Based on Dredged Sludge

Mohamed,

Amar,

et al. 2024

JERA

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River-carried solids, especially during floods, lead to dam sedimentation. Dredging extends dam life, but excess unusable sediment storage threatens the environment. The aim of this work is to investigate the influence of the recovery of calcined mud from Chorfa dam on the physico-mechanical and chemical characteristics of mortars fiber bundles. The sludge is used as a partial substitute for cement by volume at rates of 10%, 15%, 20% and 25%. All test specimens had water / binder (W/B) ratio and steel fibers ratio. Testing programme included measuring the fluidity, ultrasonic pulse velocity test, dynamic modulus of elasticity, flexural and compressive strengths. Compared to the control mortar, the fluidity represented by the diameter of M0, M15 and M25 mixtures decreased by approximately 11%, 14% and 22%, respectively. The compressive strength of M15 increased by 17.4% at 28 days, compared with the control specimen. At 7 days, the ultrasonic speed of the M25 mixture decreases by 1.7% compared to that of M15. The dynamic modulus of elasticity of M20 and M25 increases by 13% and 12% as the age ranges from 2 to 28 days. At 28 days, the flexural strength of the M20 blends increased by approximately 64%.

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Effects of Waste Glass Powder on Properties of Self-Compacting Repair Mortars

Cited by 2 publications

References 37 publications

Evolutionary patterns and microscopic mechanisms of strength in mine tailings backfilled with waste glass

Evolutionary patterns and microscopic mechanisms of strength in mine tailings backfilled with waste glass

Evaluation of the Performance of Fiber-Reinforced Mortars Based on Dredged Sludge

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