Next Article in Journal
Perceptions of Agritourism and Cooperation: Comparisons between an Island and a Mountain Region in Greece
Next Article in Special Issue
Characterization of Bitumen Modified with Pyrolytic Carbon Black from Scrap Tires
Previous Article in Journal
Is Bankruptcy Risk Tied to Corporate Life-Cycle? Evidence from Pakistan
Previous Article in Special Issue
Reclaimed Polymers as Asphalt Binder Modifiers for More Sustainable Roads: A Review
Article Menu
Issue 3 (February-1) cover image

Export Article

Open AccessArticle
Sustainability 2019, 11(3), 679; https://doi.org/10.3390/su11030679

Evaluation of the Improvement Effect of Limestone Powder Waste in the Stabilization of Swelling Clayey Soil

Department of Civil Engineering, University of Alicante (Spain), 03690 San Vicente del Raspeig, Spain
*
Author to whom correspondence should be addressed.
Received: 19 December 2018 / Revised: 21 January 2019 / Accepted: 24 January 2019 / Published: 28 January 2019
(This article belongs to the Special Issue Sustainable Infrastructure Materials and Systems)
Full-Text   |   PDF [3853 KB, uploaded 28 January 2019]   |  

Abstract

The natural stone industry generates large amounts of industrial waste every year. Limestone powder produced by the activity of this industry is dumped into landfills, generating an environmental impact that could be reduced by using this waste as a binder in building materials. In the present work, the use of this by-product as an addition for soil improvement of clayey soils has been studied. The tested natural soil is a soft clay from southeastern Spain, which has been mixed by adding 5, 10, 15, 20, and 25% of dry limestone dust by total dry weight of the soil. The natural soil and the additive have been characterized, in addition to the common geotechnical tests, by means of X-Ray diffraction and X-Ray Fluorescence. The improvement of the geotechnical properties of the mixed soil has been evaluated by means of the change in the Atterberg limits, free swell index, unconfined compressive strength, and one-dimensional consolidation test. The change in the microstructure of the mixed soil has been studied by scanning electron microscopy. In general, the results obtained show an increase in the strength of the soil and a reduction of its deformability when limestone powder is added. View Full-Text
Keywords: clay; limestone waste; soil improvement; strength; deformation clay; limestone waste; soil improvement; strength; deformation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Pastor, J.L.; Tomás, R.; Cano, M.; Riquelme, A.; Gutiérrez, E. Evaluation of the Improvement Effect of Limestone Powder Waste in the Stabilization of Swelling Clayey Soil. Sustainability 2019, 11, 679.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top