河海大学学报（自然科学版）
河海大學學報（自然科學版）
하해대학학보（자연과학판）
JOURNAL OF HOHAI UNIVERSITY (NATURAL SCIENCES)
2015年
1期
39-43
,共5页
疏浚淤泥%水泥固化%土水特征曲线%收缩曲线%基质吸力
疏浚淤泥%水泥固化%土水特徵麯線%收縮麯線%基質吸力
소준어니%수니고화%토수특정곡선%수축곡선%기질흡력
dredged material%cement solidification%soil-water characteristic curve%shrinkage curve%matric suction
对不同初始含水率和水泥添加量的淤泥进行固化处理，结合土水特征曲线和收缩曲线探讨固化淤泥在干燥过程中基质吸力与孔隙比之间的关系。试验结果表明：原泥与低水泥添加量的固化淤泥随着基质吸力的增加会出现干缩现象，且固化淤泥的收缩小于原泥，高水泥添加量的固化淤泥不发生收缩；当基质吸力增至某一值ΨS后，基质吸力增大不会引起试样的进一步收缩，固化淤泥ΨS的大小与淤泥的初始含水率、水泥添加量有关。
對不同初始含水率和水泥添加量的淤泥進行固化處理，結閤土水特徵麯線和收縮麯線探討固化淤泥在榦燥過程中基質吸力與孔隙比之間的關繫。試驗結果錶明：原泥與低水泥添加量的固化淤泥隨著基質吸力的增加會齣現榦縮現象，且固化淤泥的收縮小于原泥，高水泥添加量的固化淤泥不髮生收縮；噹基質吸力增至某一值ΨS後，基質吸力增大不會引起試樣的進一步收縮，固化淤泥ΨS的大小與淤泥的初始含水率、水泥添加量有關。
대불동초시함수솔화수니첨가량적어니진행고화처리，결합토수특정곡선화수축곡선탐토고화어니재간조과정중기질흡력여공극비지간적관계。시험결과표명：원니여저수니첨가량적고화어니수착기질흡력적증가회출현간축현상，차고화어니적수축소우원니，고수니첨가량적고화어니불발생수축；당기질흡력증지모일치ΨS후，기질흡력증대불회인기시양적진일보수축，고화어니ΨS적대소여어니적초시함수솔、수니첨가량유관。
Dredged material ( DM) with different initial water contents and cement contents was solidified. The relationship between the matric suction and the void ratio during drying of the solidified dredged material ( SDM ) was established by utilizing the soil-water characteristic curves and the shrinkage curves, which were determined through experimental tests. The experimental results show that, during the drying process, the untreated soil and SDM with low cement contents continuously shrink with the increase of matric suction, and the latter exhibits lower shrinkage compared with the former, while SDM with high cement contents show no shrinkage. The increase of matric suction cannot cause further shrinkage when it reaches a specific valueΨS . It is found that the value ofΨS is influenced by the initial water content and cement content.
