摘要
为了给实际工程中镁质水泥复合固化剂对有机质土的加固效果提供评价依据,以镁质水泥固化土(TZ18固化土)的无侧限抗压强度作为评价指标,分别研究有机质、水、固化剂的质量分数以及龄期对无侧限抗压强度的影响规律.结果表明:TZ18固化土的无侧限抗压强度随有机质质量分数的增加呈二次函数形式降低,随水和固化剂质量分数的增加分别呈幂函数形式降低和提高,随龄期的增加呈自然对数形式增长.基于此规律,建立TZ18固化土的抗压强度预测模型.算例分析表明,该模型能较好地预测任意有机质、水、固化剂的质量分数以及龄期下的TZ18固化土的无侧限抗压强度.
In order to provide evaluation basis for the solidification effect of cured organic soil solidified by the magnesium cement complex curing agent in practical engineering,the unconfined compressive strength of the magnesium-cement cured soil(TZ18 cured soil)was taken as the evaluation index,and the influences of the mass fraction of organic matter,water and curing agent and the age on the unconfined compressive strength were investigated.Results showed that the unconfined compressive strength of the TZ18 cured soil decreased in quadratic function with the increase of organic matter mass fraction and reduced in power function with the increase of water mass fraction,whereas increased in power function with the increase of cured agent mass fraction and enhanced in natural logarithm function with the growth of age.Based on the above tested results,a forecast model of the comprehensive compressive strength of TZ18 cured organic soil was developed.Example analysis indicated that the proposed model can predict the unconfined compressive strength of TZ18 cured soil at any mass fraction of organic matter,water and curing agent as well as age.
作者
朱剑锋
庹秋水
邓温妮
饶春义
刘浩旭
ZHU Jian-feng;TUO Qiu-shui;DENG Wen-ni;RAO Chun-yi;LIU Hao-xu(Faculty of Architectural,Civil Engineering and Environment,Ningbo University,Ningbo 315211,China;School of Civil Engineering and Architecture,Zhejiang University of Science and Technology,Hangzhou 310023,China;Bridge Branch Zhejiang Provincial Transportation Engineering Construction Group Co.Ltd,Hangzhou 310051,China;School of Civil Engineering,Southeast University,Nanjing 211189,China)
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2019年第11期2168-2174,共7页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(51879133,51508092,51409142)
浙江省自然科学基金资助项目(LY17E080006)
江苏省自然科学基金资助项目(BK20150611)
宁波市自然科学基金资助项目(2017A610307)
关键词
镁质水泥固化剂
有机质
水的质量分数
龄期
无侧限抗压强度
预测模型
magnesium cement curing agent
organic matter
mass fraction of water
age
unconfined compressive strength
forecast model
