A Study of Engineering Properties of Tamsui Laterite Improve by Fly Ash and Slag

• Main Authors: Wang, Ruey-Shyan, 王瑞賢
• Other Authors: Chu Shi-Chih
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/46401272597039507589

碩士 === 淡江大學 === 土木工程學系 === 85 === Fly Ash and slag are two industrial waste materials. Theycan be used in soil stabilization, but need mixed with othermaterials. In this research, fly ash and slag were used to improve the engineering properties of Tamsui Laterite. There are thirteen combinations of Laterite-Fly Ash-Slagmixtures in this study. The fly ash content ranges from zero to twenty percent whereas the slag content ranges from zeroto ten percent on the dry weight basis. Tests contented inthis study includes unconfined compression tests, direct shear test, and one- dimensional consolidation tests. Theengineering properties of laterite such as strength and consolidation were tested with respect to different curingtime and methods. The results indicate that the improvements on engineeringproperites are: (1)The strength of laterite-fly ash-slag mixtures generally incewase with the curing time. The strength of laterite -fly ash-slag mixtures decreases when they are soaking in wet sand for curing. (2)The compressibility of laterite-fly ash- slag mixtures decrease about eighty percent after curing twenty-eight days. (3)The cohesion and angle of internal friction of laterite- fly ash-slag mixtures increase on all the mixes.