준설매립된 해성점성토에서 시멘트계 고화재를 이용한 표층개량
The Improvement of Surface Layer Using Cement-hardening Agents in Dredged and Reclaimed Marine Clay
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Abstract
The surface layer in dredged and reclaimed marine clay is improved by mixing of shallow soils and hardening agents, which is made of cement, containing some other special admixtures. Tests in both laboratory and field settings are performed to investigate the improvement effect and strength properties of cement-stabilized soils. The test results show that the hardening agent sufficiently improves the soil properties of the surface layer, while increasing the load-carrying capacity. The strength of cement-stabilized soils depends, primarily, on water-to-cement ratio and curing temperature. That is, the higher curing temperature and the longer curing time, the higher the strength in cement-stabilized soils. The high ratio of water-to-cement results in a lower strength.1. 서 론