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

Carević, Ivana; Štirmer, Nina; Serdar, Marijana; Ukrainczyk, Neven

doi:10.3390/ma14071632

Cited by 14 publications

(14 citation statements)

References 43 publications

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“…It can be seen that the use of WBA in the cement pastes changed the hydration kinetics: the induction period was prolonged by the addition of WBA, regardless of the type and chemical properties of WBA. This is consistent with previous studies [ 51 , 72 ]. The delay in the induction period of pastes containing WBA, displayed in Figure 4 , is explained in the literature by the supersaturated state with calcium oxides [ 44 ].…”

Section: Resultssupporting

confidence: 94%

“…Therefore, WBAs ought to be collected and stored immediately upon collection in closed containers to avoid pre-hydration and carbonization. Adequate storage of WBA would be a starting point for boosting the use of WBA in cementitious composites and highlighting the beneficial cementitious properties of WBA [ 51 ]. These three main groups (raw material, combustion technology, and storage) of influences straightforwardly meddle with the applicability of WBA as a cement replacement [ 25 , 52 , 53 ].…”

Section: Methodsmentioning

confidence: 99%

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Pilot Scale Production of Precast Concrete Elements with Wood Biomass Ash

et al. 2021

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Downsizing fossil fuel dependence and greenhouse gas emissions is at the forefront of a sustainable future. The expansion of renewable energy while striving to minimize dependence on fossil fuels has led to biomass taking the lead among renewable energy sources, with wood having the broadest application. Along with the growing trend of using biomass as a renewable energy source, the combustion of wood biomass results in wood biomass ash (WBA), leading to compelling amounts of waste. In this study, the technical feasibility of fly WBA from different Croatian power plants was analyzed to evaluate its potential use in precast concrete drainage elements and curb units. By implementing a performance-based design, the influence of various factors in thermal processing of wood biomass was investigated, together with a detailed characterization of WBA in order to assess the feasibility of using WBA as a secondary raw material in a large-scale industrial batching plant. The compressive strength and durability properties (water absorption, permeability, and freeze–thaw resistance) of concrete mixtures with WBA as a replacement for 15 wt% cement were evaluated and compared with the precast concrete manufacturer’s technical requirements. The main concerns identified were compositional inconsistency of WBA, workability downturn, delay in initial reactivity rate, and increased water absorption. Concrete with WBA based on a circular design has been found to be a viable solution to cement depletion, stepping up from recycling to reuse of industrial waste.

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Section: Resultssupporting

confidence: 94%

Section: Methodsmentioning

confidence: 99%

Pilot Scale Production of Precast Concrete Elements with Wood Biomass Ash

et al. 2021

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“…The mass loss caused by the dehydroxylation of calcium hydroxide in a temperature range of around 400 to 500 °C (in line with the literature [ 7 , 23 , 25 , 26 ]) was determined with the tangential method according to Lothenbach et al [ 27 ]. The amount of CaCO 3 was calculated according to [ 28 , 29 ] with the mass loss between 600 and 750 °C (in line with the literature [ 23 , 30 , 31 , 32 , 33 , 34 ]) using the stepwise method:

where: Ca(OH) 2 is the amount of calcium hydroxide in the sample in g/100 g SCM; ML_Ca(OH)2* is the corrected mass loss between approximately 400 and 500 °C determined with the tangential method from TGA in wt.%; m1000* is the corrected mass at 1000 °C taken from TGA in wt.%; SCM_Anhydrous is the amount of SCM in g/100 g Anhydrous calculated according to Equation (3); CaCO 3 is the amount of calcium carbonate in the sample in g/100 g SCM; ML_CaCO3* is the corrected mass loss between 600 and 750 °C determined with the stepwise method from TGA in wt.%; w is the amount of physically and chemically bounded water (without water in calcium hydroxide) as well as the remaining organic solvents and free water in the sample in g/100 g SCM; m40* is the corrected mass at 40 °C taken from TGA in wt.%; m600* is the corrected mass at 600 °C taken from TGA in wt.%. …”

Section: Methodsmentioning

confidence: 99%

A Mass Balance Approach for Thermogravimetric Analysis in Pozzolanic Reactivity R3 Test and Effect of Drying Methods

2021

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The reactivity of supplementary cementitious materials (SCMs) is a key issue in the sustainability of cement-based materials. In this study, the effect of drying with isopropanol and acetone as well as the interpretation of thermogravimetric data on the results of an R3 test for evaluation of the SCM pozzolanic reaction were investigated. R3 samples consisting of calcium hydroxide, potassium hydroxide, potassium sulphate, water, and SCM were prepared. Besides silica fume, three different types of calcined clays were investigated as SCMs. These were a relatively pure metakaolin, a quartz-rich metakaolin, and a mixed calcined clay, where the amount of other types of clays was two times higher than the kaolinite content. Thermogravimetric analysis (TGA) was carried out on seven-day-old samples dried with isopropanol and acetone to stop the reaction processes. Additional calorimetric measurement of the R3 samples was carried out for evaluation of the reaction kinetics. Results show that drying with isopropanol is more suitable for analysis of R3 samples compared to acetone. The use of acetone results in increased carbonation and TGA mass losses until 40 (isothermal drying for 30 min) and 105 °C (ramp heating), indicating that parts of the acetone remain in the sample, causing problems in the interpretation of TGA data. A mass balance approach was proposed to calculate calcium hydroxide consumption from TGA data, while also considering the amount of carbonates in the sample and TGA data corrections of original SCMs. With this approach, an improvement of the linear correlation of TGA results and heat release from calorimetric measurement was achieved.

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“…The carbonization depth of wood waste ash cement mixture is greater than that of Portland cement mixture, and the carbonization effect increases with the increase of wood waste ash content. This may be due to CH reduction and consequent pH reduction (Carević et al, 2019;Carević et al, 2021).…”

Section: Wood Waste Ashmentioning

confidence: 99%

Agricultural and Aquaculture Wastes as Concrete Components: A Review

Wei

Gao

et al. 2021

Front. Mater.

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The application of agricultural and aquaculture waste in concrete greatly reduces the pressure on the ecological environment brought by traditional concrete production. The use of agricultural and aquaculture wastes as cement replacement, aggregate replacement and fiber reinforcement has showed great potential. Making full use of these wastes can help the development of sustainable concrete. This paper provides an objective evaluation and summary of agricultural waste and aquaculture waste in green concrete. Agricultural waste is divided into natural plant fiber, agricultural waste ash and multi-application waste according to useful function and alternative methods, such as sisal fiber, olive waste ash, and bamboo. Aquaculture waste mainly refers to some shells such as oyster shell. This paper analyzes the advantages and disadvantages of agricultural and aquaculture waste concrete applications that have been reported and shows how different agricultural and aquaculture wastes are made in concrete. The selection of appropriate treatment methods and usage scenarios is extremely important for agricultural and aquaculture waste concrete, which can determine whether the concrete has reliable performance. This paper will lay a foundation for the progress of waste concrete and provide reliable help for the development of environmental protection concrete.

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

Cited by 14 publications

References 43 publications

Pilot Scale Production of Precast Concrete Elements with Wood Biomass Ash

Pilot Scale Production of Precast Concrete Elements with Wood Biomass Ash

A Mass Balance Approach for Thermogravimetric Analysis in Pozzolanic Reactivity R3 Test and Effect of Drying Methods

Agricultural and Aquaculture Wastes as Concrete Components: A Review

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