Wood biomass ash as a raw material in concrete industry

Lakušić, Stjepan

doi:10.14256/jce.2546.2018

Cited by 15 publications

(11 citation statements)

References 30 publications

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“…A summary of the chemical and physical properties of WBAs and cement is presented in Table 1 and Figure 2. The input parameters of the power plants (average combustion temperatures, technology of combustion, and biomass used in the power plants) are given in Table 1 and are discussed in detail in [35]. WBAs were collected from October to January and periodically tested by thermogravimetric measurements, while chemical and physical properties of WBAs were done from January to April, 2018.…”

Section: Methodsmentioning

confidence: 99%

Effect of Wood Biomass Ash Storage on the Properties of Cement Composites

et al. 2021

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Since ash from wood biomass mostly ends up in landfills, recent research has focused on finding its economic and environmental added value as a potential new raw material in the construction industry. However, for wood ash to be used on an industrial scale in construction, a strategy for its proper storage must be defined. Proper storage of WBA is important to ensure quality control for applications in cementitious composites. This work investigated the aging of wood biomass ash (WBA) collected from five different power plants in Croatia and its influence on the performance of cementitious composites. WBA and cement pastes were investigated at different aging times (up to one year) using thermogravimetric analysis (TGA), powder X-ray diffraction (XRD), isothermal calorimetry and initial and final setting times. The results showed that storage of WBA in closed and open containers resulted in carbonation and hydration of mainly free lime and periclase, respectively, which affected the reactivity and setting times of WBA cement pastes.

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Section: Methodsmentioning

confidence: 99%

Effect of Wood Biomass Ash Storage on the Properties of Cement Composites

et al. 2021

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“…Circular WBA management is ecologically and economically viable at the local level. Based on the conducted survey made under project "TAREC 2 Transformation of Wood Biomass Ash into Resilient Construction Composites", 61% of WBA is landfilled, while 38% is used in agriculture [63]. The heavy metals concentrations in WBA that are shown in Table 2 were compared with the limit values for heavy metals concentrations in some EU countries (Table 5) to evaluate the applicability of WBAs in agriculture.…”

Section: Discussion Of the Application Of Wba In Agriculturementioning

confidence: 99%

“…Three samples were obtained from different plants, and their characteristics are provided in Table 1. A survey was performed during sampling, in which the respondents confirmed that they used virgin wood chips in their energy production [63].…”

Section: Methodsmentioning

confidence: 99%

Leaching Characteristics of Wood Biomass Fly Ash Cement Composites

Carević

Štirmer

Trkmić³

et al. 2020

Applied Sciences

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Wood biomass ash (WBA) represents an environmental and economic problem for energy producers, and there have been extensive studies of using WBA as a raw material in construction products. This study investigates the leaching characteristics of WBA cement composites based on testing results. Currently, 70% of WBA is landfilled, and the rest is primarily used in agriculture; therefore, this study also addresses the leaching as a component of environmental safety of these two primary WBA management approaches. An analysis of the leaching characteristics of WBA, monolithic, and crushed cement composites is performed by replacing 15% of the cement with WBA. The study was conducted using three WBA samples collected from different power plants. Increased values of leaching from the WBA itself are indicative of potential issues that could occur in the case of its disposal. The study concluded that the WBA could be potentially environmentally acceptable as a raw material in the concrete industry because the heavy metals are stabilized within the cement matrix.

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“…In the energy production process, using wood biomass, ash is generated, which can be classified as bottom ash (ash from the bottom of the incinerator) and fly ash (further divided into a coarse fraction (cyclone fly ash) and fine fraction (filter fly ash)) [5]. Chemical and mineral composition of wood can vary considerably and mostly depends on the type of wood, technology and burning temperature [6].…”

Section: Introductionmentioning

confidence: 99%

“…There are studies that consider the potential and method of application of wood ash in the production of concrete and mortar [5,8,9,10]. A general conclusion of these studies is that due to variations in chemical and mineralogical composition, detailed characterization of wood ash is required to determine the potential and method of its use as a partial replacement of cement or as a mineral admixture in cement composites.…”

Section: Introductionmentioning

confidence: 99%

Properties of Self-compacting Concrete Produced with Biomass Wood Ash

et al. 2021

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The demand of the contemporary society for renewable energy sources lead to the increase of the bio-power plants. Accordingly, the amount of ash generated by burning the biomass is increased, and its disposal becomes a large environmental problem. The paper presents the research of potential use of biomass wood ash as a partial replacement for coal fly ash (10%, 20%, 30% and 40% of mass) in production of self-compacting concrete (SCC). The effects of biomass wood ash on the properties of SCC in fresh and hardened states have been examined, as well as on the properties of durability. Test results indicated that the biomass wood ash slightly reduces the flowability and passing ability of SCC, while its addition enhances the viscosity of SCC and significantly prevents segregation and bleeding. SCCs with the contents of biomass wood ash up to 20% have approximately same mechanical strength as the reference mixture. Biomass wood ash has no negative effect on the resistance of concrete to the action of water under pressure, but a decrease of freeze/thaw resistance with de-icing salt is detected as its contents increases. The addition of biomass wood ash into SCC increases the drying shrinkage in the initial period of drying (up to 14 days), and it is decreased in a later phase.

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Wood biomass ash as a raw material in concrete industry

Cited by 15 publications

References 30 publications

Effect of Wood Biomass Ash Storage on the Properties of Cement Composites

Effect of Wood Biomass Ash Storage on the Properties of Cement Composites

Leaching Characteristics of Wood Biomass Fly Ash Cement Composites

Properties of Self-compacting Concrete Produced with Biomass Wood Ash

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