Waste paper ash as an alternative binder to improve the bearing capacity of road subgrades

Cepriá, Juan José; Orejana, R.; Recasens, José Rodrigo Miró; Martínez, Ana María Romero; Bizinotto, Marilda Barra; Aponte, Diego; Baloochi, Hani

doi:10.1201/9781003222880-17

Cited by 2 publications

(2 citation statements)

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“…Overall, WPFA has a lower density than standard raw materials, implying increased transportation costs limiting the delivery distances for a feasible CBM. It was concluded that WPFA could replace cement and lime satisfactorily in stabilised-soil road layers, while environmental risks, mostly related to dust generation during in situ HRB mixing with soil, can be acceptable and properly managed [51]. Quality control demonstrated the compliance of the new HRB with all technical and environmental requirements at affordable process costs; therefore, a technical conformity report (TC) was launched (in progress) for a new product called CALCEM.…”

Section: Cbm 2: Innovative Circular Business Model For Eco-hydraulic ...mentioning

confidence: 99%

Enhancing Circular Business Model Implementation in Pulp and Paper Industry (PPI): A Phase-Based Implementation Guide to Waste Valorisation Strategies

Sopelana,

Oleaga,

Cepriá

et al. 2023

Sustainability

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Innovation in the circular economy (CE) and the deployment of effective circular business models (CBM) have attracted significant attention in times of growing natural resource scarcity. Despite this widespread interest, significant challenges remain between theoretical innovations and effective CBM implementation in any industrial sector where companies pursue cost-saving opportunities through waste valorisation strategies. Since current methods mislead in terms of the real limitations to designing feasible novel products and services under a circular economy, this study proposes exploring determinants underpinning the organisational resilience of CBMs under a resource efficiency strategy through three case studies. As a result of a co-creation process, the implementation of a CBM framework was built upon empirical data and, thence, a phase-based implementation guide was laid out to assist companies in designing and implementing innovative CBM dealing with the complexity of innovative waste valorisation strategies between the PPI and construction sectors. Relevant findings on managerial and policy recommendations encountered along the demo stage are provided in this paper favouring an effective implementation of CE strategies: the role of technological and non-technological aspects within the CBM, the perspective of the ecosystem and its value proposition, and specific guidelines for the different phases of CBM life cycle.

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Section: Cbm 2: Innovative Circular Business Model For Eco-hydraulic ...mentioning

confidence: 99%

Enhancing Circular Business Model Implementation in Pulp and Paper Industry (PPI): A Phase-Based Implementation Guide to Waste Valorisation Strategies

Sopelana,

Oleaga,

Cepriá

et al. 2023

Sustainability

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“…Nienov et al [4] created a mixture between clay soil, waste, and agglomerant in different conditions and assessed the compressive strength in relation to the proportions of this mixture. Cepriá et al [5] considered the use of fly ash as an alternative hydraulic binder replacing the cement in road projects.…”

Section: Introductionmentioning

confidence: 99%

Potential Application of Natural Fibres for the Reinforcement of Unpaved Forest Roads—Response after RL-CBR Tests

Carlos,

Rodrigues,

Martins

et al. 2024

Applied Sciences

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Unpaved roads are essential as transportation infrastructure. These roads are traditionally built utilizing local soils and aggregates. The application of different materials to improve the strength and the overall performance of these road solutions has been investigated. This study focuses on the assessment of the suitability of reinforcing a fine soil using natural fibres from the forest value chain—specifically, pine needles—for unpaved forest roads. The resilient response of both unreinforced and reinforced soils was assessed with RL-CBR tests (California Bearing tests with repeated load) for different percentages of natural fibres incorporated into the soil. The force–penetration response, CBR value, recoverable and permanent displacements, and equivalent modulus were estimated. The effect of different load stages on the elastic response of both unreinforced and reinforced soils was also evaluated. The CBR values improved with the addition of pine needles; the best response was observed for specimens reinforced with 1% (mass) of these natural fibres (the CBR value increased by 45%). The equivalent modulus also was improved, showing that the stiffness of the soil increased with the inclusion of reinforcement. The findings imply that RL-CBR studies offer a promising method for obtaining important design parameters, especially for unpaved forest roads where investments in soil characterization are frequently limited.

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Waste paper ash as an alternative binder to improve the bearing capacity of road subgrades

Cited by 2 publications

References 0 publications

Enhancing Circular Business Model Implementation in Pulp and Paper Industry (PPI): A Phase-Based Implementation Guide to Waste Valorisation Strategies

Enhancing Circular Business Model Implementation in Pulp and Paper Industry (PPI): A Phase-Based Implementation Guide to Waste Valorisation Strategies

Potential Application of Natural Fibres for the Reinforcement of Unpaved Forest Roads—Response after RL-CBR Tests

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