Long-Term Effect of Different Particle Size Distributions of Waste Glass Powder on the Mechanical Properties of Concrete

Omer, Brwa; Saeed, Jalal A.

doi:10.21307/acee-2020-030

Cited by 9 publications

(2 citation statements)

References 46 publications

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“…However, the hydraulic activity of SS and WG is a matter of their strength index, as discussed in the upcoming sections. The XRD spectrums of WG and SS were interpreted with respect to the references [36,37].…”

Section: X-ray Diffractionmentioning

confidence: 99%

Evaluation of the Performance of Steel Slag and Waste Glass as a Cement Replacement

Azeez,

Hassan,

Atiyah

2023

ETJ

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This work assessed the pozzolanic activity of locally available steel slag and waste glass in mortars.• Effects of steel slag and waste glass replacing cement on workability, density, and strength index are studied. • Unlike waste glass, steel slag decreased mortar strength and workability. • Steel slag improved compressive strength and mitigated the negative impact of waste glass in concrete.The industrial development and growth in population activity caused an annual increase in solid wastes over the past decades. The emissions of CO2 from the cement industry are the main source of air pollution. Recycling wastes as cementitious materials conserve the ecosystem in different aspects, e.g., reduction of CO2 footprint. Consequently, the pozzolanic activity of two solid wastes abundantly available in Iraq, steel slag (SS) and waste glass (WG), were evaluated. This study aimed to replace them with ordinary Portland cement. This will achieve a sustainable, eco-efficient, and environmentally friendly construction industry. The Chemical analysis of the wastes by XRF and XRD suggests a possible cementitious capability owing to the amorphous nature of WG and the presence of C3S and C2S in SS. Accordingly, due to international standards, cubic mortars were produced by replacing cement with SS at 50% and WG at 50% and 20%. The effects of such replacements on the compressive strength of mortars were evaluated by comparison with that of the control mortars. WG increases workability and results in a higher strength index (72.8%) than that of SS (48.7%) at similar replacement levels (50%). Subsequently, SS and WG replaced coarse aggregates (CA) and cement, respectively, in concrete. The results revealed positive effects of SS on compressive strength in contrast to WG influence. The compressive strength of concrete cured for 91d increased by about 20% compared to the control sample upon incorporation of 50% SS without any WG.

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Section: X-ray Diffractionmentioning

confidence: 99%

Evaluation of the Performance of Steel Slag and Waste Glass as a Cement Replacement

Azeez,

Hassan,

Atiyah

2023

ETJ

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“…When the substitution rate of WGP for cement does not exceed 25%, its impact on concrete can be neglected. Among them, when the volume ratio of WGP replacing cement is less than 20% and the particle size is less than 135 microns, the working performance is better, the compressive strength of short age (28 d) is increased by 25% [27], and the mechanical properties over the long term (180 d) are significantly improved [28][29][30]. It can function as a cementitious material [31,32], possessing higher erosion resistance and durability [33].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Long-Term Mechanical Properties and Durability of Waste Glass Added to OPC Concrete

Zhu,

Meng,

Wang

et al. 2023

Materials

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This study aims to achieve the sustainable utilization of waste glass resources through an investigation into the influence of three types of admixtures, namely waste glass powder (WGP) (G), waste glass powder–slag (G-S), and waste glass powder–fly ash (G-F), on the mechanical properties and durability performance of waste glass concrete. The experimental results demonstrate that the exclusive use of WGP as an admixture led to the relatively poor early compressive strength of the concrete, which decreased with an increase in dosage. However, at medium to long curing ages, the strength of the waste glass concrete could equal or even surpass that of ordinary concrete. When dual admixtures were employed, the G-S group exhibited higher compressive strength compared to the G-F group. Specifically, within the G-S group, a glass powder dosage of 15% yielded higher compressive strength, and after 180 days, the dual admixture groups exhibited greater strength than ordinary concrete (G0); the compressive strength of the tG1S1 group was 44.57 MPa, and that of the G0 group was 40.07 MPa. The chloride ion diffusion coefficient showed a varying trend with an increase in WGP dosage, initially decreasing and then increasing. The concrete’s resistance to erosion was maximized when the glass powder dosage reached 30%. As the WGP dosage increased, the overall frost resistance decreased. For a total dosage of 30%, the optimal glass powder dosage in both G-S and G-F groups was found to be 15%.

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Evaluating the shear performance of reinforced concrete beams using waste glass powder as a sustainable cement substitute

Omer,

Saeed

2024

Structural Concrete

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The scarcity of comprehensive data on the shear properties of reinforced GP‐concrete beams without shear reinforcement has hindered their widespread use, mainly due to challenges in predicting their shear performance. This study examines the influence of incorporating up to 15% waste glass powder (GP) with two separate particle size categories: GP‐A (55 to 135 μm) and GP‐B (finer than 55 μm) as a cement replacement on the 180‐day shear performance of reinforced concrete beams with varying cement content and without stirrups. To accomplish this, a total of 14 beams were used, all sharing identical dimensions measuring 200 mm × 250 mm × 2000 mm. The aforementioned parameters were investigated for their effects on the shear performance of beams, including crack patterns, modes of failure, load–deflection behavior, and strength capacities at different loading stages. Furthermore, this investigation explores the applicability of the most commonly used design codes of practice for predicting the shear strength of reinforced GP‐modified concrete beams. These codes are typically employed to design the shear strength of reinforced conventional concrete shallow beams without shear reinforcement. The study's findings indicate that the impact of GP particle size on the shear performance of beams with the same GP content is almost negligible. Additionally, the study found that incorporating GP into concrete beams does not have any negative effects on their cracking load capacity, shear strength, or flexural cracking load capacity. In fact, it can even improve the latter. A comparison of experimental results with predictions from the design codes revealed that both the CEB‐FIP (1990) equation and the ACI equations provided safe estimates of shear strength for the tested beams. However, the CEB‐FIP (1990) equation yielded predictions with a lower mean, standard deviation, and coefficient of variation compared with the ACI equations, suggesting a higher level of accuracy in its estimates. The findings affirm the suitability of GP‐concrete as a viable alternative in concrete structures specifically engineered to withstand shear forces.

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Long-Term Effect of Different Particle Size Distributions of Waste Glass Powder on the Mechanical Properties of Concrete

Cited by 9 publications

References 46 publications

Evaluation of the Performance of Steel Slag and Waste Glass as a Cement Replacement

Evaluation of the Performance of Steel Slag and Waste Glass as a Cement Replacement

Experimental Study on Long-Term Mechanical Properties and Durability of Waste Glass Added to OPC Concrete

Evaluating the shear performance of reinforced concrete beams using waste glass powder as a sustainable cement substitute

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