Study on Properties of Concrete Mixed With Rice Husk Ash Adsorbing Heavy Metals

Yanaka, Ayane

doi:10.21660/2022.92.7638

Cited by 3 publications

(3 citation statements)

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“…Rice husk, a by-product of the agricultural industry in Thailand, has been found to have advantageous properties when used as a concrete mixing material due to its high compressive strength and lack of harmful substances. [11] For beam structures, lightweight concrete beams that use pumice stone as an aggregate can reduce resource consumption while maintaining good structural performance.…”

Section: Methodsmentioning

confidence: 99%

Towards Sustainable and Financially Viable Military Welfare Housing Projects in Thailand: A Hybrid Management Approach and Innovative Construction

Soisuwan

2023

GEOMATE

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This paper proposes alternative physical and environmental features for the military housing welfare system, aimed at increasing stability and improving the quality of life in accordance with welfare objectives. The study examines welfare-related concepts, theories, studies, laws, and the management of homes in mixed-housing developments. Primary data was gathered through surveys and interviews, while secondary data was obtained from relevant documents and sources. Based on this data, a virtual project was developed to evaluate the progress of the proposed features and to determine how to integrate the concept of an integrated military housing welfare system into the physical features and surroundings of the project. The project's viability was assessed over a 30-year period from legal, financial, and practical perspectives. The results provide a framework for more adaptable and effective project management, which could be applied to other charity housing programs, and also address the shortcomings of previous government-run welfare housing schemes.

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Section: Methodsmentioning

confidence: 99%

Towards Sustainable and Financially Viable Military Welfare Housing Projects in Thailand: A Hybrid Management Approach and Innovative Construction

Soisuwan

2023

GEOMATE

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“…The research efforts on cementbased materials used as adsorption materials focus on the mass concrete components, and are mainly in reference to pervious road concrete relative to rainwater adsorption, the solidification of cement kiln co-processing on heavy metal ions, and the processing of sludge containing heavy metal ions [10]. Incorporating adsorption materials such as rice husk ash, zeolite, activated carbon and graphene into cement-based materials can effectively improve the adsorption performances of cement-based materials relative to pollutants [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Research Progress on the Applications of Seashell Adsorption Behaviors in Cement-Based Materials

Xin

Wang

et al. 2023

Buildings

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The use of seashells to replace traditional cement-based materials and study their adsorption capacity for pollutants can expand the functional engineering application range of cement-based materials. A large amount of seashell waste is produced in coastal areas every year. How to deal with and utilize this seashell waste is a common problem faced by coastal countries and regions. This paper first reviews the principles of adsorption kinetics and adsorption isotherms to demonstrate the adsorption mechanism of shell materials. Then the effects of pH, contact time, temperature, pollutant concentration and other factors on the adsorption of heavy metal ions and basic dyes to seashells are discussed. Finally, the relevant applications of seashells in the construction field are reviewed. The results showed that the optimal pH value in the process of seashell adsorption was 5–7, the active site on the surface of the seashell particles was limited, and that it would reach saturation at a certain concentration, but would not further increase with the increase of time. The active site area of the seashell would increase with the decrease of particle size, so the selection of seashell powder with small particle size was conducive to enhancing the absorption capacity and removal efficiency. The experimental use of seashells instead of cementitious materials or natural aggregates in cement-based materials showed good adsorption capacity and would have a wide range of application prospects in permeable concrete and architectural coatings. By analyzing the research progress on factors influencing seashell adsorption performance and the applications of seashell adsorption behaviors in cement-based materials, this paper could provide ideas and methods for the design of functional cement-based adsorption materials from multiple angles.

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“…However, as reported in [2,8], the leaching of heavy metals which are contained in the woody ash is worried due after the service. On the other hand, as shown in [9], hardened cement has the performance of preventing the leaching of heavy metals contained in the waste and it is most commonly used in solidification and stabilization processes. Therefore, if woody ash can be used as a concrete material, a large amount of woody ash can be reused without leaching heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Physical Property and Heavy Metal Leaching Behavior of Concrete Mixed With Woody Ash

Ueno¹

2023

GEOMATE

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In recent years, the woody biomass power generation has attracted a lot of attention since woody biomass is an alternative energy source to fossil fuels. In the future, further implementation of woody biomass power generation is expected, and a large amount of woody ash will be discharged. Several studies have been conducted on the effective use of woody ash for construction materials. However, woody ash has not been practically used because of concerns about the leaching of heavy metals from concrete mixed with woody ash. If the above problem can be solved, a large amount of woody ash is expected to be used. In this study, the fresh property and hardened properties, such as compressive strength and length change were measured to evaluate the feasibility of using concrete mixed with woody ash. Furthermore, a heavy metal leaching test was conducted to assess the environmental impact caused by concrete mixed with woody ash. As the result, the concrete mixed with woody ash has the slump and air content similar to that of normal concrete, the compressive strength meeting the standard durability design strength in Japan, and the shrinkage is similar to that of normal concrete. Additionally, the concentration of heavy metals exceeding the soil environmental quality standards in Japan was partially detected, but the leaching amount of heavy metals from the concrete mixed with woody ash was similar to that from normal concrete.

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Study on Properties of Concrete Mixed With Rice Husk Ash Adsorbing Heavy Metals

Cited by 3 publications

References 0 publications

Towards Sustainable and Financially Viable Military Welfare Housing Projects in Thailand: A Hybrid Management Approach and Innovative Construction

Towards Sustainable and Financially Viable Military Welfare Housing Projects in Thailand: A Hybrid Management Approach and Innovative Construction

Research Progress on the Applications of Seashell Adsorption Behaviors in Cement-Based Materials

Physical Property and Heavy Metal Leaching Behavior of Concrete Mixed With Woody Ash

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