alexa Chemical-mechanical characteristics of crushed oyster-shell.
Chemical Engineering

Chemical Engineering

Journal of Chemical Engineering & Process Technology

Author(s): Yoon GL, Kim BT, Kim BO, Han SH

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Abstract Enormous amount of oyster-shell waste has been illegally disposed at oyster farm sites along the southern coast of Korea. To seek for a possibility to recycle the waste as construction materials, chemical and mechanical characteristics of crushed oyster-shell were investigated. Chemical and microstructure analyses showed that oyster-shells are predominantly composed of calcium carbonate with rare impurities. Compressive strength tests for soil mortar specimens with varying blending ratio of cement, water, sand, and oyster-shell were compared with normal cement mortar. There was no significant reduction in the compressive strength up to 40\% of dosages of oyster-shell instead of sand. The experimental results demonstrate that oyster-shells can be resources of pure calcareous materials and effective in replacement of sand, indicating promising reusable construction materials. This article was published in Waste Manag and referenced in Journal of Chemical Engineering & Process Technology

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