Study on the influence of waste glass powder replacing fly ash on the performance of concrete

Wang, Yongding; Wu, Fengmin; Zhang, Zhichao; Lin, Jinxin; Bao, Lei

doi:10.1088/1742-6596/2539/1/012026

Cited by 1 publication

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“…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]. However, it still reduces early strength in concrete [34].…”

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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