The Study of Mechanical Properties of Slag Cement and Admixtures Stabilized Clay

• Main Authors: Te-Wei Shou, 周德威
• Other Authors: Pei-Hsun Tsai
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/5b57xj

碩士 === 朝陽科技大學 === 營建工程系碩士班 === 91 === The main purpose of this study is to research the influence of slag cement and admixtures including fly ash or water glass, on three soils, such as the Kaohsiung mudstone, the Taitung clay and Taichung lateritic be mixed 15% of bentonite. To study on activity, strength and swelling property of improved soil, laboratory tests including the Atterberg limit test, unconfined compression test and swelling test for improved soil were done. Soils treated with various percentage of slag cement and admixtures. The results of this study show that the Atterberg limits of improved soil are decreased with the contain of slag cement and admixtures. The best improved effect on activity is the Taichung lateritic. The optimal contain of slag cement on unconfined compression strength is about 20%∼25% of dry soil weight. The unconfined compression strength of improved soil is increased with the contain of slag cement and curing time, additional strength gains of the Taichung lateritic mixed with slag cement could have been increased farther. Admixed fly ash into stabilized soil does not matter to additional strength gains, excluding that the contain of fly ash more than 20% of slag cement contain. The optimal contain of water glass on unconfined strength is about 2%∼6% of slag cement contain. The modulus E50 of stabilized soil is increased with the contain of slag cement and curing time. The swelling percentage of improved soil is decreased with curing time in 14 days.