Effect of air-cooled blast furnace slag aggregate on mechanical properties of ultra-high-performance concrete

Cao, Qi; Nawaz, Usman; Xin, Jiang; Ansari, Wajahat Sammer

doi:10.1016/j.cscm.2022.e01027

Cited by 6 publications

(3 citation statements)

References 24 publications

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“…Several research works have investigated the utilization of GBFS and Recycled Concrete Aggregate (RCA) in the context of concrete. The utilization of self-compacting concrete (SCC) with GBFS as a substitute for natural coarse aggregate resulted in a significant decrease in compressive strength, surpassing 20% as reported in previous studies [18,19].…”

Section: Introductionmentioning

confidence: 78%

Response surface methodology use in optimization of concrete properties using blast furnace slag aggregate and recycled concrete sand

Poonam,

Singh

2023

Res. Eng. Struct. Mat.

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The utilization of waste materials in concrete plays a crucial role in sustainable construction by contributing to environmental conservation and enhancing concrete properties. However, waste management and sustainable construction present significant challenges within the construction industry. This study specifically focuses on the optimization of concrete properties by utilizing Blast furnace slag aggregate (BFSA) as coarse aggregate (CA) and recycled concrete sand (RCS) as fine aggregate (FA). To assess the impact of BFSA and RCS replacement parameters, response surface methodology (RSM) based on central composite design (CCD) was employed. The RSM regression equations generated in this study demonstrated high R2 values (>0.8), indicating their capability to explain the variability observed in the responses. To assess the impact of BFSA and RCS replacement parameters, response surface methodology (RSM) based on central composite design (CCD) was employed. In conclusion, the implementation of RSM enables the incorporation of waste materials into concrete, resulting in waste reduction without significant effects on concrete properties.

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Section: Introductionmentioning

confidence: 78%

Response surface methodology use in optimization of concrete properties using blast furnace slag aggregate and recycled concrete sand

Poonam,

Singh

2023

Res. Eng. Struct. Mat.

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“…A sustainable source for substituting natural aggregates in road concrete is air-cooled crushed blast furnace slag (ACBFS) [50,51]. There are research studies related to the use of blast furnace slag as a substitute for natural aggregates in asphalt mixtures leading to these conclusions [52].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Blast Furnace Slag on Cement Concrete Road by Microstructure Characterization and Assessment of Physical-Mechanical Resistances at 150/480 Days

et al. 2023

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The results presented in this paper on the appropriateness of using of blast furnace slag (BFS) in the composition of roads make an original contribution to the development of sustainable materials with the aim to reduce the carbon footprint and the consumption of natural resources. The novelty of this work consists of determining the optimal percentage of BSF in road concrete, in order to: increase mechanical resistances, reduce contractions in the hardening process, and ensure increased corrosion resistances, even superior to classic cement-based mixtures. Thus, the physical-mechanical characteristics and the microstructure of some road concretes were studied in the laboratory for three different recipes. We kept the same amount of ground granulated blast furnace slag (GGBS) as a substitute for Portland cement, respectively three percentages of 20%, 40%, 60% air-cooled blast furnace slag (ACBFS) and crushed as sand substitute from now on called S54/20, S54/40, S54/60. Drying shrinkage, mechanical resistances, carbonation-induced corrosion, microstructure characterization of hardened concretes, and degree of crystallinity by SEM and XRD measurements were analyzed after a longer curing period of 150/480 days. The obtained results on the three BSF mixtures indicated a reduction of drying shrinkage and implicitly increased the tensile resistance by bending to 150 days well above the level of the blank composition. The degree of crystallinity and the content of the majority phases of the mineralogical compounds, albites, quartz, and tobermorite out of the three BSF samples justifies the increase in the compressive strengths at the age of 480 days in comparison with the test samples. Scanning electron microscope (SEM) and X-ray diffraction measurements showed the highest compactness and lowest portlandite crystal content for the S54/20 slag composite. Future research concerns are the realization of experimental sections in situ, the study of the influence of BFS on the elasticity module of road concrete, and the opportunity to use other green materials that can contribute to the reduction of the carbon footprint, keeping the physical and mechanical properties of road concrete at a high level.

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“…Researchers are investigating various sustainable construction materials to reduce the environmental impact of building and construction projects (Ali et al, 2022;Akbar et al, 2023a;Yang et al, 2023). These sustainable construction materials have been found to perform similarly to traditional cement-based structures (Wang et al, 2019;Chang et al, 2020;Abdelmelek and Lubloy, 2021;Cao et al, 2022;Junaid et al, 2022). Mechanical properties and durability have been extensively studied to ensure the reliability of supplementary cementitious materials (Amin et al, 2020;Ansari and Chang, 2020;Alaloul et al, 2021).…”

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confidence: 99%

Concrete matrix based on marble powder, waste glass sludge, and crumb rubber: pathways towards sustainable concrete

Akbar,

Hussain,

Imran

et al. 2024

Front. Mater.

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This research aims to develop a sustainable concrete matrix using industrial waste materials, including marble powder, waste glass sludge (WGS), and crumb rubber from tire waste. The mechanical properties of the newly designed concrete mix, such as compressive strength, split tensile strength, and flexural strength, were evaluated. The results showed improvements in compressive strength by 5%, split tensile strength by 4%, and flexural strength by 5%. Besides, a statistical two-way analysis of variance (ANOVA) with a threshold of less than 0.001 was used, and the residual error was found to be low (4.09), both in terms of lack of fit and pure error. This research proposes a new model to assess the sustainable performance of the newly developed concrete matrix. Data was collected from 21 academic professors and structural engineers, and hypotheses were tested using partial least squares structural equation modelling. The Design Expert software was deployed to check its hypothesis, and the Smart PLS software was deployed to measure data validation. The findings demonstrate that a sustainable concrete matrix positively influences sustainable performance. The proposed model offers valuable insights for decision-makers and engineering managers, highlighting the benefits of adopting sustainable materials to enhance overall sustainability performance. Incorporating marble powder, waste glass sludge, and crumb rubber was beneficial in terms of mechanical strengths and microstructure. Overall, this research contributes to the goal of reducing CO2 emissions in the cement industry and provides practical recommendations for incorporating sustainable materials in construction practices.

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Effect of air-cooled blast furnace slag aggregate on mechanical properties of ultra-high-performance concrete

Cited by 6 publications

References 24 publications

Response surface methodology use in optimization of concrete properties using blast furnace slag aggregate and recycled concrete sand

Response surface methodology use in optimization of concrete properties using blast furnace slag aggregate and recycled concrete sand

The Influence of Blast Furnace Slag on Cement Concrete Road by Microstructure Characterization and Assessment of Physical-Mechanical Resistances at 150/480 Days

Concrete matrix based on marble powder, waste glass sludge, and crumb rubber: pathways towards sustainable concrete

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