生物炭添加对固化疏浚泥压缩性状和渗透性状影响研究

Effects of Biochar Addition on Compression and Permeability of Solidified Dredged Clay

为明确生物炭添加对固化高含水率疏浚泥压缩性状和渗透性状的影响,该文对生物炭改良固化疏浚泥开展了一维压缩试验和柔性壁渗透试验。基于试验结果,对固化高含水率疏浚泥压缩性状和渗透性状随生物炭掺量的变化规律进行了研究,并分析了生物炭添加引起其压缩性状和渗透性状变化的原因。结果表明,生物炭添加将引起固化高含水率疏浚泥压缩性和渗透系数的减小,且减小幅度随生物炭掺量的增加是变化的。对于研究所用固化疏浚泥,生物炭掺量在(5%、15%)范围内为宜。

A series of one-dimensional compression tests and permeability tests were conducted to investigate the biochar effects on the compressive and hydraulic behavior of cemented dredged clay at high moisture content.Based on the test results,the changes of compression properties and permeability properties of solidified high moisture content dredged mud with the content of biochar were studied,and the reasons for the changes of compression properties and permeability properties caused by the addition of biochar were analyzed.The results show that the addition of biochar will reduce the compressibility and permeability coefficient of solidified high moisture content dredged clay,and the reduction range changes with the increase of biochar content.For the solidified dredged mud used in the research,the content of biochar should be in the range of(5%,15%).