Chemical-mechanical characteristics of crushed oyster-shell.
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.
Coastal & Harbor Engineering Research Division, Korea Ocean Research & Development Institute, 1270 Sadong, Ansan City, 425-744, South Korea. glyoon@kordi.re.kr
Gil-Lim
GL
Yoon
Byung-Tak
BT
Kim
Baeck-Oon
BO
Kim
Sang-Hun
SH
Han
D000818:Animals; D019245:Compressive Strength; D003247:Conservation of Natural Resources; D003252:Construction Materials; D007723:Korea; D008422:Materials Testing; D010125:Ostreidae / Q000737:chemistry; D012037:Refuse Disposal / Q000379:methods*; D012822:Silicon Dioxide
D012822:Silicon Dioxide