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The Foundation Performance of Selected Waste Plastic Wastes Used in Cement Manufacturing

Journal of the Korean Institute of Resources Recycling 2020 3 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Jong-Min Han, Bong-Hee Kang, Jae-Yong Park, Jeong-Wook Lee, Namgyu Kim

Summary

This study investigated the use of sorted and crushed waste plastics as a feedstock supplement in cement manufacturing. Researchers found that hard waste plastics contributed more to cement compressive strength than soft plastics and that plastics can provide both energy and material value in cement sintering. The study addresses one pathway for diverting plastic waste from landfill into construction industry applications.

In this study, the selected waste plastic waste logistics used for cement sintering were classified into two types through the process of sorting and crushing, analyzing the characteristics of each, and analyzing the correlation of the strength after cement manufacturing. The experimental variables were classified into soft and hard waste plastic waste, and the correlations between calorific value, chlorine, and moisture were analyzed. In addition, some of each waste was selected and melted, and the basic characteristics were evaluated by analyzing the structure and calorific value. The results of the experiment showed that it was evaluated that it is suitable to obtain a heat source by separating soft waste plastic wastes and sintering them with materials having similar properties. As a result of examining the wastes by strength after cement manufacturing, it was analyzed that the use of hard plastics greatly contributes to the compressive strength on the 1st and 28th, and the use of soft plastics contributes to the compressive strength on the 28th. However, these characteristics are evaluated by collecting only a part of the waste, and since the deviation of the waste occurs, continuous management is required, and a follow-up study on the environmental problems caused by the use of waste is required.

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