水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
2期
5-8,57
,共5页
疏浚淤泥%离心机法%土水特征曲线%水泥掺量%龄期
疏浚淤泥%離心機法%土水特徵麯線%水泥摻量%齡期
소준어니%리심궤법%토수특정곡선%수니참량%령기
dredged material%centrifuge method%soil-water characteristic curve%cement content%curing age
为了研究疏浚淤泥固化处理后作为土工材料时保持水分的能力，利用离心机法快速量测了不同水泥掺量及龄期下固化淤泥的土水特征曲线，提出了修正后的吸力计算公式，试验结果表明：水泥的掺入使得淤泥中低势能的自由水转化到水泥水化产物中，随水泥掺量的增大，固化淤泥的持水能力不断增强；养护龄期越长，水泥水化反应越充分，固化淤泥进气值增大，土水特征曲线排水阶段的斜率减小，28 d 与56 d 的进气值差别不大，说明龄期对固化淤泥土水特征曲线的影响逐渐趋于稳定。
為瞭研究疏浚淤泥固化處理後作為土工材料時保持水分的能力，利用離心機法快速量測瞭不同水泥摻量及齡期下固化淤泥的土水特徵麯線，提齣瞭脩正後的吸力計算公式，試驗結果錶明：水泥的摻入使得淤泥中低勢能的自由水轉化到水泥水化產物中，隨水泥摻量的增大，固化淤泥的持水能力不斷增彊；養護齡期越長，水泥水化反應越充分，固化淤泥進氣值增大，土水特徵麯線排水階段的斜率減小，28 d 與56 d 的進氣值差彆不大，說明齡期對固化淤泥土水特徵麯線的影響逐漸趨于穩定。
위료연구소준어니고화처리후작위토공재료시보지수분적능력，이용리심궤법쾌속량측료불동수니참량급령기하고화어니적토수특정곡선，제출료수정후적흡력계산공식，시험결과표명：수니적참입사득어니중저세능적자유수전화도수니수화산물중，수수니참량적증대，고화어니적지수능력불단증강；양호령기월장，수니수화반응월충분，고화어니진기치증대，토수특정곡선배수계단적사솔감소，28 d 여56 d 적진기치차별불대，설명령기대고화어니토수특정곡선적영향축점추우은정。
The soil-water characteristic curve of the solidified dredged material (DM) with different cement contents and curing ages was measured by centrifuge to study its water retention when it severed as civil engineering materials ,and the revised formula of suction was put forward .The test results show that the hydration reaction transfers the free water to high potential water in cement hydration resultants ,and the water-holding capacity of the solidified DM increases with the increasing of cement content .For sufficient hydration reaction ,the air-entry values increase with the increasing of curing age ,but the gradients of soil-water characteristic curves decrease with the increasing of curing age .There is so little dif-ference between the air-entry values of 28 days and 56 days ,it is shown that the influence of curing age on the water-holding capacity of the solidified DM tends to be stable .
