Strength benefit of sawdust/wood ash amendment in cement stabilization of an expansive soil

James, Jijo

doi:10.19053/01211129.v28.n50.2019.8790

Cited by 17 publications

(8 citation statements)

References 27 publications

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“…Field monitoring has revealed elaborative patterns for stiffness and lower permeability of ashes over time due to the hydration. The self-cementitious property of fly ashes from the pulp and paper industry arises from high calcium and aluminosilicates and plays a significant role in the improvement of strength and volume change properties for foundation soils [174][175][176]. Thus, ashes can be applied as a stabilizer for improving the engineering performance of expansive foundation soils, subgrades and subbase layers of roads, hydraulic layers, and similar constructions [177].…”

Section: Application Of Ashes From Other Industries In Peatland Stabilizationmentioning

confidence: 99%

Towards Sustainable Soil Stabilization in Peatlands: Secondary Raw Materials as an Alternative

et al. 2021

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Implementation of construction works on weak (e.g., compressible, collapsible, expansive) soils such as peatlands often is limited by logistics of equipment and shortage of available and applicable materials. If preloading or floating roads on geogrid reinforcement or piled embankments cannot be implemented, then soil stabilization is needed. Sustainable soil stabilization in an environmentally friendly way is recommended instead of applying known conventional methods such as pure cementing or excavation and a single replacement of soils. Substitution of conventional material (cement) and primary raw material (lime) with secondary raw material (waste and byproducts from industries) corresponds to the Sustainable Development Goals set by the United Nations, preserves resources, saves energy, and reduces greenhouse gas emissions. Besides traditional material usage, soil stabilization is achievable through various secondary raw materials (listed according to their groups and subgroups): 1. thermally treated waste products: 1.1. ashes from agriculture production; 1.2. ashes from energy production; 1.3. ashes from various manufacturing; 1.4. ashes from waste processing; 1.5. high carbon content pyrolysis products; 2. untreated waste and new products made from secondary raw materials: 2.1. waste from municipal waste biological treatment and landfills; 2.2. waste from industries; 3. new products made from secondary raw materials: 3.1. composite materials. Efficient solutions in environmental engineering may eliminate excessive amounts of waste and support innovation in the circular economy for sustainable future.

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Section: Application Of Ashes From Other Industries In Peatland Stabilizationmentioning

confidence: 99%

Towards Sustainable Soil Stabilization in Peatlands: Secondary Raw Materials as an Alternative

et al. 2021

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“…[5] Arcilla inorgánica orgánica (CH) [16], [24] y [27] Grava arcillosa (GC) [3] Suelo arenoso [22] Fuente: Propio.…”

Section: Clasificación Sucs Artículosunclassified

“…Finalmente, en la Tabla 8 se muestran 4 dosificaciones distintas donde se detallan las resistencias a la compresión del suelo natural y del suelo estabilizado. El artículo [16] presenta una resistencia a la compresión del suelo natural de 3.6 kgf/cm2 y añadiendo 10% de suelo -polímero obtiene una resistencia a la compresión de 2.5 kgf/cm2; el artículo [21] presenta una resistencia a la compresión del suelo natural de 5.23 kgf/cm2 y añadiendo 4% de aceite residual (AR) obtiene una resistencia a la compresión de 7.61 kgf/cm2; el artículo [24] presenta una resistencia a la compresión del suelo natural de 1.18 kgf/cm2 y añadiendo 8% de cal, 6% de cenizas volantes (CV) y 2% de escoria de acero (EA) obtiene una resistencia a la compresión de 19.42 kgf/cm2; y el artículo [27] presenta una resistencia a la compresión del suelo natural de 2.55 kgf/cm2 y añadiendo 6% de cemento y 5% de ceniza de aserrín (CDA) obtiene una resistencia a la compresión de 107.76 kgf/cm2. Fuente: Propio basado en [16], [21], [24] y [27].…”

Section: Clasificación Sucs Artículosunclassified

“…En la Tabla 11 se muestran 5 dosificaciones distintas, donde el artículo [5] menciona que el suelo natural presenta un IP de 15% y que al estabilizarlo, presenta un IP de 13.46%; en el artículo [8] menciona que el suelo natural presenta un IP de 8% y que al estabilizarlo, presenta un IP de 7%; en el artículo [22] no menciona el IP inicial del suelo natural y tampoco menciona el IP después de estar estabilizado; en el artículo [25] menciona que el suelo natural presenta un IP de 8.03%, sin embargo no menciona cuanto logró reducir o aumentar el IP después de estabilizar el suelo; en el artículo [26] menciona que el suelo natural presenta un IP de 13.55% y que al estabilizarlo, presenta un IP de 13.65%. CL [21] CH [24] CH [27] Resistencia kgf/cm2 (suelo natural)…”

Section: Clasificación Sucs Artículosunclassified

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Aplicación de materiales contaminantes para potenciar la estabilización de suelos, Lima - 2023

Bendezu-Ibazeta,

Neyra-Torres

2023

Proceedings of the 3rd LACCEI International Multiconference on Entrepreneurship, Innovation and Regional Development (LEIRD 202

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In this systematic review, it is analyzed and investigated how the effect of various polluting materials harmful to the environment can be used to improve soil stabilization. Several sources have been analyzed about the use of polluting residues such as rubber, concrete, glass, slag, ashes, polymers, among others. The analyzed results show that the dosages whose addition of Portland cement and sugar cane bagasse ash considerably increase the California Bearing Ratio (CBR) in soils whose classification is silty sand (SM), with variations ranging from 24.5% to 142%. On the other hand, there are analyzed results that show that the dosages whose addition of biomass ash and mining inerts increase the CBR on a smaller scale in soils whose classification is Inorganic Clay (CL)where it only increases from 2.1% to 2.6%, while the Plasticity Index (PI) manages to reduce from 54.7% to 32%. And for the dosages with rubber, in a first study it was observed that the CBR decreased from 26.27% to 22.70% and in a second study it was observed that the CBR increased from 5.2% to 12.2% in soils with CL classification. However, although there were some limitations such as the selection of not very old articles, the ease of access to paid articles and the inclusion of reliable sources that are not related to the proposed topic, the present study provides valuable and solid information that will be useful for future research related to soil stabilization.

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“…Field monitoring showed significant increases in stiffness and decreases in permeability over time, which were attributed to the hydration of ash. The self-cementitious property of PPFA arising from its high calcium and aluminosilicate contents can result in substantial improvements in the strength and volume change properties of expansive subgrades and foundation soils [20][21][22]105]. Due to very low permeability, PPFA-based geopolymers can also be successfully employed as hydraulic barriers, including for cover for landfills [106,107].…”

Section: Binder Components For Geotechnical Engineering Applicationsmentioning

confidence: 99%

Pulp and Paper Mill Fly Ash: A Review

Cherian

Siddiqua

2019

Sustainability

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The continual growth of pulp and paper industry has led to the generation of tremendous volumes of fly ash as byproducts of biomass combustion processes. Commonly, a major part of it is landfilled; however, updated environmental regulations have tended to restrict the landfilling of fly ash due to rising disposal costs and the scarcity of suitable land. The pulp and paper industries are therefore urgently seeking energy-efficient mechanisms and management for the beneficial use of fly ash in an ecological and economical manner. This paper offers a comprehensive review of existing knowledge on the major physicochemical and toxicological properties of pulp and paper mill fly ash to assess its suitability for various bound and unbound applications. The current state of various methods used for the valorization of pulp and paper mill fly ash into more sustainable geomaterials is briefly discussed. This paper also presents promising and innovative applications for pulp and paper mill fly ash, with particular reference to agriculture and forestry, the construction and geotechnical industries, and the immobilization of contaminants. It was identified from a literature review that modified pulp and paper mill fly ash can be environmentally and economically advantageous over commercial coal-based fly ash in various sustainable applications.Sustainability 2019, 11, 4394 2 of 16 use of compost products, etc., are drawbacks of composting [10]. Contaminant-free PPFA has great significance as a soil liming agent and fertilizer in agriculture and forestry [6,11]; however, its direct application requires safety precautions due to its undesirable handling and spreading characteristics and associated health risks [12,13]. Further, high pH and electrical conductivity values of pore water in wood ash might have perturbing effects on the microbial community [14]. In order to withstand extreme conditions, the bacteria may enter a dormant stage, thereby decreasing the microbial population and diversity and ultimately disturbing the ecological balance. PPFA and value-added materials also have multifunctional engineering applications, such as supplementary cementitious material (SCM) in concrete systems, aggregate in pavement construction, binder for soil stabilization, and adsorbent for the immobilization of toxic heavy metals [15][16][17][18][19][20][21][22][23]. Based on a statistical survey conducted on the management and utilization of boiler ashes generated at Canadian pulp and paper mills, it was reported that more than 50% of ash is landfilled, 20-25% is used as a soil amendment (direct application or compost), and less than 20% is used for other beneficial applications such as the construction of embankment fills, the stabilization of pavement layers, and the solidification of wastes. [1,2].This paper reviews the existing knowledge on physicochemical and toxicological properties of PPFA in order to assess its suitability as a sustainable geomaterial for various bound and unbound applications. The bound applications of fly ash in...

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Strength benefit of sawdust/wood ash amendment in cement stabilization of an expansive soil

Cited by 17 publications

References 27 publications

Towards Sustainable Soil Stabilization in Peatlands: Secondary Raw Materials as an Alternative

Towards Sustainable Soil Stabilization in Peatlands: Secondary Raw Materials as an Alternative

Aplicación de materiales contaminantes para potenciar la estabilización de suelos, Lima - 2023

Pulp and Paper Mill Fly Ash: A Review

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