摘要
固化技术在国内外已有广泛应用,但养护围压对固化土的影响还少有研究.为了探究养护围压对不同种类固化土固化效果的影响,进行了不同养护围压下的无侧限抗压强度试验和标准固结试验.试验结果表明,对于水泥固化淤泥,随着养护围压的增大,固化土的无侧限抗压强度和结构屈服应力都随之增大;对于水泥-石膏固化淤泥,养护围压可以更好地发挥石膏的作用,提升固化效果;对于固化污泥,养护围压对固化污泥固化效果的改善作用并不明显.
Solidification technology has been widely applied at home and abroad,but there is few study on influence of curing confining stress on solidified soil. To explore the influence,unconfined compressive strength tests and standard consolidation tests were carried out under different curing confining pressures. The test results show that for cement-solidified soil,the unconfined compressive strength and structural yield stress of solidified soil increase with the increasing of curing confining pressures;for cement-gypsum solidified soil,gypsum can play a better role with the existence of curing confining stress to improve the solidification;for cement-solidified sludge,curing confining stress has little influence on improvement of solidification.
作者
王飞龙
朱伟
吴思麟
WANG Feilong;ZHU Wei;WU Silin(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing 210098,China;College of Environment,Hohai University,Nanjing 210098,China)
出处
《河南科学》
2019年第2期236-240,共5页
Henan Science
基金
国家科技重大专项(2013ZX07113001)
关键词
养护围压
固化土
无侧限抗压强度
结构屈服应力
curing confining stress
solidified soil
unconfined compression strength
structural yield stress
