摘要
本文以云南省某结晶堵塞高速公路隧道为例,通过现场调研、现场试验等手段,对该隧道的结晶体来源及预防措施进行了探析。结果表明:结晶体成分主要为CaCO_(3);结晶体CaCO_(3)中Ca^(2+)主要来源于水泥和速凝剂,CO_(3)^(2-)主要来源于地下水和CO_(2);利用20%掺量粉煤灰代替20%水泥,可以减少喷射混凝土的钙溶出作用。
Taking a crystallization blocked highway tunnel in Yunnan Province as an example,the paper sets out to explore the sources of crystallization and preventive measures for the tunnel through on-site investigation and field survey.The results show that the crystal composition mainly consists of CaCO_(3);the Ca^(2+) in the crystallized CaCO_(3) mainly comes from cement and accelerator,and the CO_(3)^(2-)mainly comes from groundwater and CO_(2);to solve the crystallization issue,20%cement can be replaced by 20%blended fly ash,which can slow down the calcium dissolution effect of the shotcrete.
作者
武东阳
肖振江
Wu Dongyang;Xiao Zhenjiang(Yunnan Laman Expressway Co.,Ltd.,Xishuangbanna 666300)
出处
《中阿科技论坛（中英文）》
2022年第10期140-144,共5页
China-Arab States Science and Technology Forum
基金
云南省交通运输厅项目(云交科教便[2019]59号)。
关键词
隧道
排水系统
结晶堵塞
预防措施
Tunnel
Drainage system
Crystallization blockage
Preventive measures
