摘要
通过力学强度测试、矿物成分分析、红外光谱测试(FTIR)和电子扫描电镜(SEM)分析等,研究了改性剂模数、改性剂掺量及养护龄期对黄河流域河库底淤泥固化改性土的力学性能、矿物组成、微观结构和水化产物成分的影响。结果表明:改性剂模数、改性剂掺量和养护龄期对固化淤泥试块的力学性能影响显著,试件抗压强度随改性剂掺量和养护龄期的增加而增长,抗压强度最高达7.13 MPa;改性后淤泥中黏土矿物与改性剂反应生成絮状地聚物凝胶,材料结构更加致密均匀。
The influence of the modulus, dosage of the modifier and curing age on mechanical properties, mineral component, microstructures and hydration products of modified sludge from reservoirs in the Yellow River Basin were investigated using mechanical strength test, XRD, FTIR and SEM technique. The results show that the modulus, dosage and curing age of the modifier have significant impacts on the mechanical properties of the solidified sludge. The compressive strength of the specimen increases with the modifier dosage and curing age, and the maximum value of compressive strength is 7.13 MPa. The results of XRD, FTIR and SEM show that flocculent geopolymer gel can be formed by the reaction of clay minerals and the modifier, and the material structure became more compact and uniform.
作者
祝珺
李长明
狄龙飞
柴枭雄
贾东洋
陈恒杰
秦宋林
尹冰涛
ZHU Jun;LI Changming;DI Longfei;CHAI Xiaoxiong;JIA Dongyang;CHEN Hengjie;QIN Songlin;YIN Bingtao(Nianyushan Reservoir Administration Bureau of Xinyang City in Henan Province,Xinyang 465350,China;School of Civil Engineering and Communication,North China University of Water Resource and Electric Power,Zhengzhou 450045,China;Yellow River Institute of Hydraulic Research,YRCC,Zhengzhou 450003,China;Henan Key Laboratory of Ecological Environment Protection and Restoration of Yellow River Basin,Zhengzhou 450003,China;Sinohydro Bureau 11 Co.,Ltd.,Zhengzhou 450001,China)
出处
《水利水电科技进展》
CSCD
北大核心
2023年第1期99-104,共6页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金(51708216,51809109)
河南省黄河流域生态环境保护与修复重点实验室开放基金(LYBEPR202104)
黄河水利科学研究院基本科研业务费专项(HKY-JBYW-2020-20)。
关键词
淤泥固化改性
抗压强度
资源化利用
黄河流域
sludge solidification enhancement
compressive strength
resource utilization
Yellow River Basin
