CAJ | 학술논문

采用无侧限抗压强度试验和直剪试验,从单轴抗压强度、黏聚力、内摩擦角的角度探求了淤泥固化土重塑时导致的强度折减和重塑后土的强度恢复特性,并分析了重塑前养护龄期(T 前)、重塑后养护龄期(T 后)、水泥掺灰比(ac)的影响。试验结果表明,重塑时机的选择对淤泥固化土的强度折减程度有显著的影响：T 前越长,破碎过程带来的强度折减越严重,且大致满足 ac越大、强度折减越严重的规律。从强度恢复特性来看：小水泥掺灰比的固化淤泥土经过 T 后,其强度恢复较好；大掺灰比的重塑土其强度则较难恢复至固化土的水平,T 前越长,强度恢复越不利。从而得出了大掺灰比固化土宜早重塑,小掺灰比的重塑时间可适当延长的规律。
채용무측한항압강도시험화직전시험,종단축항압강도、점취력、내마찰각적각도탐구료어니고화토중소시도치적강도절감화중소후토적강도회복특성,병분석료중소전양호령기(T 전)、중소후양호령기(T 후)、수니참회비(ac)적영향。시험결과표명,중소시궤적선택대어니고화토적강도절감정도유현저적영향：T 전월장,파쇄과정대래적강도절감월엄중,차대치만족 ac월대、강도절감월엄중적규률。종강도회복특성래간：소수니참회비적고화어니토경과 T 후,기강도회복교호；대참회비적중소토기강도칙교난회복지고화토적수평,T 전월장,강도회복월불리。종이득출료대참회비고화토의조중소,소참회비적중소시간가괄당연장적규률。
To determine the suitable compaction moment and strength recovery properties of remodeled stabilized dredged soil,the unconfined compression test and direct shear test were conducted. The mechanism of strength reduction and recovery were analyzed in term of cohesive strength and internal frictional angle of stabilized dredged soil and remodeled stabilized dredged soil.And three factors including the curing period before remolded,the curing period after remolded,cement content impact on the strength of stabilized dredged soil and remodeled stabilized dredged soil were explored. Test results show that the curing period before remolded causes a significant impact on the strength reduction of remodeled stabilized dredged material.The strength reduction ratio increased with the curing period before remolded increased.And the strength reduction ratio increased with the cement content increased too.After curing,the unconfined strength of remodeled stabilized dredged soil with small cement content recover well,however the large one was difficult to recover to close to the level of stabilized dredged soil.And the curing period extends are adverse to the strength recovery of remodeled stabilized dredged soil.To conclude,the stabilized dredged soil with small cement content may be remodeled sooner rather than later,however,the large one can be prolong remodeled time properly.