山东大学学报 (工学版) ›› 2019, Vol. 49 ›› Issue (1): 83-90.doi: 10.6040/j.issn.1672-3961.0.2017.366
祝学勇1,2(),刘海威3,马晓燕4,邢庆涛2,林孝群5,满铁强5
Xueyong ZHU1,2(),Haiwei LIU3,Xiaoyan MA4,Qingtao XING2,Xiaoqun LIN5,Tieqiang MAN5
摘要:
在黄泛区高液限黏土中添加不同剂量的石灰、粉煤灰和石灰粉煤灰,通过液塑限试验探究材料液限、塑性指数随时间变化的规律,确定最优的改性剂量与效果。试验表明:黄泛区高液限黏土主要矿物含量为伊利石、蒙脱石及高岭石,亲水性好,液限在50%左右;具有膨胀性、易泡散、水稳定性差等缺点,浸水4 d的承载比(CBR)低于3%;二灰土中石灰外掺4%、石灰与粉煤灰配合比3:9均可降低材料的亲水性、膨胀性,提高水稳定性,在88%压实度下改性土4 d浸水CBR能达8%,满足路床区填料要求。
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