Sustainable Utilization of Powdered Glass to Improve the Mechanical Behavior of Fat Clay

Mujtaba, Hassan; Khalid, Usama; Farooq, Khalid; Elahi, Manzoor; Rehman, Zia ur; Shahzad, Hussain

doi:10.1007/s12205-020-0159-2

Cited by 37 publications

(13 citation statements)

References 24 publications

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“…Comparing D16 and D0, it can be seen that the addition of the SGP ternary binder can significantly improve the microstructure of the soil; zooming in shows a large number of gelling products filling the pore space. These gelling products were mainly formed by the reactive SiO 2 and Al 2 O 3 [61] in the SGP ternary binder and SC, which were dissolved in the action of the alkali activator and undergo a series of polymerization reactions with Ca 2+ and Na + to produce C(N)-A-S-H and C-S-H gels. Gels can bond soil particles, enhance the adhesion between soil particles and fill the pores to reduce porosity, so that the soil structure becomes more dense and the macro-expression of the compressive performance greatly improves.…”

Section: Micromorphology Analysismentioning

confidence: 99%

The Design of a Novel Alkali-Activated Binder for Solidifying Silty Soft Clay and the Study of Its Solidification Mechanism

Jing,

Zhang,

Zhang

et al. 2024

Materials

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In order to overcome the problems of the high economic and environmental costs of a traditional ordinary portland cement-based binder, this study used self-combusted coal gangue (SCCG), granulated blast furnace slag (GBFS) and phosphorous slag (PS) to prepare a novel SCCG-GBFS-PS (SGP) ternary alkali-activated binder for solidifying silty soft clay (SC). Firstly, the parameters of the SGP ternary binder were optimized using orthogonal experiments. Then the effects of the SGP ternary binder content (mass ratio of the SGP ternary binder and the SGP-solidified soil), initial water content of SC (mass ratio of SC’ water and SC) and types of additives on the unconfined compressive strength (UCS) of the SGP-solidified soil were analyzed. Finally, the hydration products and microstructure of the SGP-solidified soil were analyzed to investigate the solidification mechanism of the SGP ternary binder. The results showed that the optimal mass ratio of GBFS and PS is 2:1, and the optimal alkali activator content (mass ratio of Na2O and the SGP ternary binder) and modulus of alkali activator (molar ratio of SiO2 and Na2O of alkali activator) were 13% and 1.3, respectively. When the SGP ternary binder content was 16% and the initial water content of SC was 35%, the SGP-solidified soil met the requirement of UCS for tertiary cured soil. The incorporation of triethanolamine and polyvinyl alcohol improved the UCS, while the incorporation of Na2SO4 significantly deteriorated the UCS of the SGP-solidified soil. The C-S-H gels and C(N)-A-S-H gels generated by hydration of the SGP-solidified soil were interspersed, interwoven and adhered to each other to form a network-like space structure that played the roles of skeleton, bonding soil particles and filling pores, which improved the macroscopic properties of the SGP-solidified soil. The results of this study provide a reference for the design and development of a solid waste-based binder for solidifying SC.

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Section: Micromorphology Analysismentioning

confidence: 99%

The Design of a Novel Alkali-Activated Binder for Solidifying Silty Soft Clay and the Study of Its Solidification Mechanism

Jing,

Zhang,

Zhang

et al. 2024

Materials

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“…There have also been calls for environmentally friendly policies. The vast body of research suggesting that NRR may help environmental improvement, FDI, and technological advancement includes but is not limited to, the works of (Mujtaba et al 2020). Water contamination and sulfur dioxide emissions have declined in China as the economy has grown, according to research.…”

Section: Financial Development and Environmentmentioning

confidence: 99%

Sustainable energy innovation and the role of fiscal development in promoting environmental sustainability

Wenxia

2023

Preprint

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The green economy might be affected by the way governments handle their budgets. China's urban ecological innovation is studied through the country's investment in R&D and education. The sample size for this study is 276 cities, with data gathered between 2004 and 2019. Spending on study and instruction has been shown to contribute to the development of green technology, albeit the exact nature of this relationship varies across time and place. Because of the interplay between Increasing Wealth in Cities stress and budgetary stress, the resultant of government spending on green technology innovation might be non-linear. This is quite important. The promotion resultant of education investment on green technology development is somewhat stable. Still, the beneficial impact of fiscal R&D expenditures on green technical innovation declines when growth in economic pressure and fiscal strain rises. Government investment in R&D and education may also help the environment by reducing waste and pollution. Improving the structure of fiscal spending promotes the development of environmentally friendly technological innovation, which in turn boosts environmental quality.

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“…The swelling ratio is defined as the ratio of the swelling of soil treated by WG to that without any WG. Mujtaba, et al (2020) reported the influence of WG on the swelling of expansive soil. The study shows that increasing WG by 14 % reduced the percentage of swelling from 4% to 0.5 %.…”

Section: Swellingmentioning

confidence: 99%

Effect of Waste Glass on Properties of Treated Problematic Soils

Sherwany,

Kakrasul,

Han

2023

ARO

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Soils are the most commonly used construction material in engineering projects. Fine-grained soils especially clayey soil may expand and lose strength when wet and shrink when dry, resulting in a significant volume change. Construction on weak soils has created challenges for various civil engineering projects worldwide, including roadways, embankments, and foundations. As a result, improving weak soil is vital, particularly for highway construction. The properties of this type of soil can be improved by waste-recycled materials such as waste glass (WG). The WG must be crushed and ground to a fine powder first and then can be mixed in various proportions with the soil. The primary objective of this study is to review the effect of WG on geotechnical properties of fine-grained soils treated by WG. To demonstrate the effects, the treated fine-grained soils at varying percentages of WG are compared with untreated soils. Physical properties (e.g., Atterberg limits, swelling, and maximum dry density), mechanical properties (e.g., California bearing ratio, and unconfined compressive strength) are evaluated. The test results from the literature show that adding a certain percentage of WG leads to a substantial effect on the properties of fine-grained soils; hence, using WG could reduce the required thickness of subbases in the construction of driveways and roads.

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Sustainable Utilization of Powdered Glass to Improve the Mechanical Behavior of Fat Clay

Cited by 37 publications

References 24 publications

The Design of a Novel Alkali-Activated Binder for Solidifying Silty Soft Clay and the Study of Its Solidification Mechanism

The Design of a Novel Alkali-Activated Binder for Solidifying Silty Soft Clay and the Study of Its Solidification Mechanism

Sustainable energy innovation and the role of fiscal development in promoting environmental sustainability

Effect of Waste Glass on Properties of Treated Problematic Soils

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