Engineering Properties of Volcanic Ash-Cement Soil Mixtures and Zeolite-Cement Soil Mixtures
2013
Lee, C.W., Kangwon National University, Chuncheon, Republic of Korea | Chang, D.S., Kangwon National University, Chuncheon, Republic of Korea | Park, S.Y., Kangwon National University, Chuncheon, Republic of Korea | Yeon, K.S., Kangwon National University, Chuncheon, Republic of Korea | Kim, Y.S., Kangwon National University, Chuncheon, Republic of Korea
In this study, the engineering characteristics of volcanic ash-cement soil mixtures and zeolite-cement soil mixtures are investigated by using unconfined compression test, freezing-thawing test, SEM and XRD analysis. The samples were mixed with volcanic ash from Mt. Baekdusan or porous zeolite, and cement as the ratios of 3.5:1, 4.0:1, 4.5:1, 5.0:1 with and without metakaolin. It is confirmed that compressive strength degraded with increasing of the amount of volcanic ash or zeolite, and increased with addition of metakaolin as a binder. Moreover, test results suggested that the mixtures provided sufficient freezing-thawing resistance. In addition, ettringite as a product of cement hydration was detected by SEM and XRD, and that possibly contributes to the strength of the mixtures.
显示更多 [+] 显示较少 [-]