纸浆渣烧结灰(PS灰)和水泥固化污泥水力试验研究  

EXPERIMENTAL STUDY ON HYDRAULIC TEST OF SLUDGE SOLIDIFIED WITH PAPER SLUDGE ASH( PS ASH) AND CEMENT

作　　者：吴炎 夏雄[2] 朱春鹏[2] 肖世国[3] WU Yan;XIA Xiong;ZHU Chunpeng;Xiao Shiguo(Changzhou University Huaide College,Jingjiang 214500;Institute of Geotechnical Engineering of Changzhou University,Changzhou 213164;Department of Geological Engineering,Southwest Jiaotong University,Chengdu 610031)

机构地区：[1]常州大学怀德学院,靖江214500 [2]常州大学岩土工程研究所,常州213164 [3]西南交通大学地质工程系,成都610031

出　　处：《工程地质学报》2019年第4期753-759,共7页Journal of Engineering Geology

基　　金：国家自然科学基金(51578466);江苏省产学研前瞻项目(BY2015027-23)资助~~

摘　　要：为研究纸浆渣烧结灰(PS灰)和水泥固化污泥的效果,本文采用多因素分析法,通过掺入PS灰和水泥,针对影响固化土力学性能和渗透性的影响因素,进行渗透试验以及静水淋溶试验,分析固化体的水力特性随影响因素的变化规律。结果表明:固化污泥的无侧限抗压强度与PS灰和水泥含量呈“阶梯形”分布,PS灰可有效降低水泥固化污泥的渗透系数,当水泥含量为20%,PS灰含量为175%时,拟合曲面上固化污泥的渗透系数达到了最小值,为0.48×10^-5cm·s^-1。当PS灰含量一定时,水泥含量增加,金属离子的含量呈下降趋势;水泥含量在8%~12%时,PS灰含量的增加对于固化Cd离子和Cu离子效果显著;其他金属离子的最大固化效果则存在于水泥含量大于12%时,且随着PS灰含量的增加而降低。This paper studies effects of sludge solidified with paper sludge ash(PS ash)and cement.The main factors are about the contents of PS ash and cement which influence solidified sludge mechanical properties and permeability.Multiple methods are used to conduct permeability tests and hydrostatic leaching tests by adding PS ash and cement.Final,the paper analyzes the change rule of hydraulic characteristics of solidified body with influencing factors.Test results show that:the unconfined compressive strength of the solidified sludge has a“staircase”distribution with the contents of PS ash and cement.The permeability of solidified sludge reaches the minimum as 0.48×10^-5 cm·s^-1,when the contents of cement and PS ash are 20%and 17.5%,respectively.When the content of PS ash is certain,the content of metal ions decreases as the increasing of cement content.PS increases the ash content for curing Cd and Cu ion effect when the cement content is between 8%~12%.The curing effect of other metal ions is shown the best when the cement content is above 12%,and decreased as the increasing of the content of PS ash.

关 键 词：纸浆渣烧结灰 固化污泥 渗透系数 静水淋溶 

分 类 号：TU441[建筑科学—岩土工程]