American Society of Civil Engineers


Sustainability through Beneficial Use of Lime Sludge for Construction


by Xinbao Yu, (Graduate Assistant, Department of Civil Engineering, Case Western Reserve University, Cleveland, OH 44106-7201 E-mail: xxy23@case.edu), Bin Zhang, (Graduate Assistant, Department of Civil Engineering, Case Western Reserve University, Cleveland, OH 44106-7201 E-mail: bin.zhang@case.edu), Jingsi Lang, (Undergraduate Researcher, Department of Civil Engineering, Case Western Reserve University, Cleveland, OH 44106-7201 E-mail: jingsi.lang@case.edu), and Xiong (Bill) Yu, (Assistant Professor, Department of Civil Engineering, Case Western Reserve University, 10900 Euclid Avenue, Bingham 210, Cleveland, OH 44106-7201 E-mail: xxy21@po.cwru.edu)

pp. 260-270, (doi:  http://dx.doi.org/10.1061/41025(338)28)

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Document type: Conference Proceeding Paper
Part of: Advances in Ground Improvement: Research to Practice in the United States and China
Abstract: Drinking water treatment plants annually produce significant amount of lime sludge during water purification procedures. They are typically stored in lagoons and disposed as solid waste. This presents a significant economic burden to daily operations. This study investigates a sustainable development strategy from beneficial utilization of this material. An experimental program is implemented to address the technical issues related to application of this material in the construction of soil embankment, where lime is commonly used as soil stabilizers. Specific topics associated with the engineering applications of lime sludge treated soils include: the effects of dry versus wet mix procedures for the introduction of lime sludge into soils, procedures to determine the optimal content of lime sludge, and the long term durability of lime sludge treated soils under freezing-thawing cycles. This study aims to help develop a sustainable strategy to utilize lime sludge for routine construction activities.


ASCE Subject Headings:
Sustainable development
Sludge
Lime
Drinking water
Water treatment