Use of Bottom Ash from a Thermal Power Plant and Lime to Improve Soils in Subgrades and Road Embankments-Reference-Cited by-同舟云学术

Use of Bottom Ash from a Thermal Power Plant and Lime to Improve Soils in Subgrades and Road Embankments

Published:2024-04-10 Issue:8 Volume:14 Page:3197
ISSN:2076-3417
Container-title:Applied Sciences
language:en
Short-container-title:Applied Sciences

Author:

Vega-Zamanillo Ángel¹^ORCID,López-López Leticia¹,López-López Esteban¹,Calzada-Pérez Miguel Ángel¹

Affiliation:

1. Group Caminos Santander, Department of Transports, Projects and Processes Technology, School of Civil Engineering, University of Cantabria, Avenida de los Castros s/n, 39005 Santander, Spain

Abstract

The present study has focused on stabilizing the soils of the embankments and improving the mechanical properties of gravel in subbases of pavements with different contents of bottom ash from thermal power plants and low percentages of lime. The density, humidity, simple resistance strength and bearing capacity of the new materials resulting from this combination have been studied. The results indicated that the optimal proportion of bottom ash added to the analyzed soil is 15%, while the optimal addition of lime is 1% for application in embankments and 2% for application in road subgrades. In clay soil that has a low simple resistance strength when 25% of bottom ash is added without lime, it can double the resistance. In the case of the gravel evaluated, it was found that the optimal ratio between the addition of bottom ash and lime is 6.5. In conclusion, it can be noted that soil that does not have any resistance when certain percentages of bottom ash are added, its properties are improved to be used in embankments.

Publisher

MDPI AG

Link

https://www.mdpi.com/2076-3417/14/8/3197/pdf

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