摘要
输电线路杆塔基础在长期服役过程中,开裂是其最常见的破坏形式。造成此现象的原因有:(1)施工控制不严格,因离析现象导致混凝土力学性能发展不良,诱发开裂现象;(2)基于硫酸盐侵蚀生成的膨胀性产物水化硫铝酸钙和钙钒石会进一步加剧开裂行为,最终导致结构整体开裂。
In the long-term service of the transmission line tower foundation,cracking is the most common form of damage.The reasons for this phenomenon are:(1)the construction control is not strict,the mechanical properties of the concrete are poorly developed due to the segregation phenomenon,and the cracking phenomenon is induced;(2)the swelling products hydrated calcium sulphoaluminate and ettringite formed by sulfate attack will further aggravate the cracking behavior and eventually lead to the overall cracking of the structure.
作者
葛雄
鲁少军
侯新文
金涛
雷雨
钟燃
王京波
肖海涛
李嗣
GE Xiong;LU Shao-jun;HOU Xin-wen;JIN Tao;LEI Yu;ZHONG Ran;WANG Jing-bo;XIAO Hai-tao;LI Si(Maintenance Company,State Grid Hubei Electric Power Co,Ltd,Wuhan 430050,China)
出处
《建材世界》
2019年第5期49-51,56,共4页
The World of Building Materials
关键词
混凝土
施工过程
开裂机理
concrete
construction process
cracking mechanism
