The Effects of Partial Replacement of Ground Granulated Blast Furnace Slag by Ground Wood Ash on Alkali-Activated Binder Systems

Teker Ercan, Ece Ezgi; Cwirzen, Andrzej; Habermehl-Cwirzen, Karin

doi:10.3390/ma16155347

Cited by 3 publications

References 98 publications

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Effect of Plant Derived Ashes in the Sustainable Alkali Activated Binder Mortars

Feezanuddin,

Marupadige,

Rahim

et al. 2024

Preprint

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This study focuses on the scavenged Teak Leaf Ash (TLA) and Parthenium plant ash (PA) to be used as partial replacements with Ground Granulated Blast Furnace Slag (GGBS) in the making of Alkali Activated Mortars (AAMs). This research encourages the use of agricultural waste in construction for its sustainability benefits. The chemical characterization of the TLA and PA was done using XRF, EDS whereas the structural analysis was done using SEM and XRD techniques. The mortars were synthesized by varying the NaOH molarity (2M, 4M, 6M and 8M) and replacement ranges from 2.5% to 10% to evaluate their mechanical as well as microstructural properties. The peak compressive strength was reached at a replacement of 2.5% with a 6M activator exhibiting strong C-S-H and C-A-S-H gel embedding for structural strengthening. The XRD analysis of the samples indicated a shift in peak positions as well as increased crystallinity with soaks, the SEM images also confirmed the densification of the microstructures of the sample at 28 days. The results present an opportunity of utilizing the provisions of TLA and PA in reduction of industrial material exploitation, utilization of agricultural wastes, high strength eco-friendly AAMs. The strategy therefore permits the achievement of the aims of construction in the 21st century, that is, green construction technologies.

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Effect of Plant Derived Ashes in the Sustainable Alkali Activated Binder Mortars

Feezanuddin,

Marupadige,

Rahim

et al. 2024

Preprint

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A Review of Biomass Wood Ash in Alkali-Activated Materials: Treatment, Application, and Outlook

Du,

Pundienė,

Pranckevičienė

et al. 2024

J. Compos. Sci.

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The utilisation of Portland cement has aroused tremendous concerns owing to its production exerting a lot of pressure on the environment. Alternative eco-binders have been developed to replace it, among which alkali-activated materials (AAMs) have drawn great attention, especially due to the possibility of encompassing industrial and agricultural waste, which significantly improves the sustainability and cost-efficiency of the material. Biomass wood ash (BWA) is a by-product generated from power plants and, along with the advocation for biomass fuel as a renewable energy resource, there have been increasing applications of BWA in building and construction materials. This review examines the use of BWA as a precursor source in AAMs. Due to its low chemical and hydraulic reactivity, more active binary precursors are usually introduced to guarantee mechanical properties. Whereas the increment of BWA content can have a negative influence on material strength development, it is still a promising and feasible material, and new approaches should be developed to improve the effectiveness of its utilisation. Currently, study of BWA-based AAMs is still in the beginning stages and more research is needed to investigate the effects of BWA characteristics on the property evolution of AAMs, focusing on the durability and analysis of eco-efficiency. Overall, this review provides a comprehensive overview of the characterisation of BWA and its potential applications in AAMs, and meanwhile, based on the analysis of present research trends, proposes some prospective directions for future research.

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Sustainable Alkali-Activated Self-Compacting Concrete for Precast Textile-Reinforced Concrete: Experimental–Statistical Modeling Approach

Kryzhanovskyi,

Orlowsky

2024

Materials

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Industrial and construction wastes make up about half of all world wastes. In order to reduce their negative impact on the environment, it is possible to use part of them for concrete production. Using experimental–statistical modeling techniques, the combined effect of brick powder, recycling sand, and alkaline activator on fresh and hardened properties of self-compacting concrete for the production of textile-reinforced concrete was investigated. Experimental data on flowability, passing ability, spreading speed, segregation resistance, air content, and density of fresh mixtures were obtained. The standard passing ability tests were modified using a textile mesh to maximize the approximation to the real conditions of textile concrete production. To determine the dynamics of concrete strength development, compression and flexural tests at the ages of 1, 3, 7, and 28 days and splitting tensile strength tests of 28 days were conducted. The preparation technology of the investigated modified mixtures depending on the composition is presented. The resulting mathematical models allow for the optimization of concrete compositions for partial replacement of slag cement with brick powder (up to 30%), and natural sand with recycled sand (up to 100%) with the addition of an alkaline activator in the range of 0.5–1% of the cement content. This allows us to obtain sustainable, alkali-activated high-strength self-compacting recycling concrete, which significantly reduces the negative impact on the environment and promotes the development of a circular economy in the construction industry.

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The Effects of Partial Replacement of Ground Granulated Blast Furnace Slag by Ground Wood Ash on Alkali-Activated Binder Systems

Cited by 3 publications

References 98 publications

Effect of Plant Derived Ashes in the Sustainable Alkali Activated Binder Mortars

Effect of Plant Derived Ashes in the Sustainable Alkali Activated Binder Mortars

A Review of Biomass Wood Ash in Alkali-Activated Materials: Treatment, Application, and Outlook

Sustainable Alkali-Activated Self-Compacting Concrete for Precast Textile-Reinforced Concrete: Experimental–Statistical Modeling Approach

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