CAJ | 학술논문

本着“就地取材、变废为宝”的原则，应用吹填海砂土进行路基填筑，经济效益较大，但是海砂土工程性能差，黏聚力小，地基土强度不易达到标准，需要使用无机结合料对其进行改良。通过土工试验测定吹填海砂土的基本性质，设计分别使用石灰和水泥改良吹填海砂土的试验方案，按照设计方案对改良后的海砂土进行界限含水率、无侧限抗压强度和三轴剪切试验。结果表明，采用石灰改良方案能有效提高抗剪强度，降低吹填海砂土的塑性，改善海砂土的工程性能。
본착“취지취재、변폐위보”적원칙，응용취전해사토진행로기전축，경제효익교대，단시해사토공정성능차，점취력소，지기토강도불역체도표준，수요사용무궤결합료대기진행개량。통과토공시험측정취전해사토적기본성질，설계분별사용석회화수니개량취전해사토적시험방안，안조설계방안대개량후적해사토진행계한함수솔、무측한항압강도화삼축전절시험。결과표명，채용석회개량방안능유효제고항전강도，강저취전해사토적소성，개선해사토적공정성능。
For the principle of “obtaining raw material locally, turning waste into treasure”, the dredger fill sand is applied to roadbed fillings. Although with the high economic benefit, the dredger fill sand has characteristics of poor project performance and low cohesive force. The strength of the foundation soil is not easy to reach the standard. Therefore inorganic binder is applied to reinforce the dredger fill sand. A series of basic soil tests on the treatment of dredger fill sand with lime and cement are done such as limit water content, unconfined compressive strength and the three axis shear test in order to study the strength properties of the sea sand. The test results show that using the lime improvement scheme can effectively improve the shear strength and the engineering properties, reduce the plasticity.