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http://dx.doi.org/10.7844/kirr.2016.25.6.58

A Study on Pretreated Paper Sludge Ash for Cement Admixture  

Jung, Jae-Hyun (Korea Institute of Ceramic Eng. & Tech.)
Seo, Seong-Kwan (Korea Institute of Ceramic Eng. & Tech.)
Chu, Yong-Sik (Korea Institute of Ceramic Eng. & Tech.)
Publication Information
Resources Recycling / v.25, no.6, 2016 , pp. 58-64 More about this Journal
Abstract
Paper industry discharges many by-products and quantity of PSA (Paper sludge ash) has been increased. In this study, hydration water was added to PSA for use as cement admixture. PSA with added water was mixed with anhydrite and this mixture was used as cement substitute. Physical properties of PSA cement were changed by contents of PSA, but PSA cement containing PSA less than 10% had similar properties to those of OPC. Compressive strength of PSA cement mortar had a certain relationship with $Ca(OH)_2$ content. Compressive strength at 3 days increased, as $Ca(OH)_2$ content increased. However, the strength at 28 days increased, as $Ca(OH)_2$ content decreased.
Keywords
Waste Recycling; Paper sludge ash; Hydrates; Hydration water;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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