论文部分内容阅读
在水利工程混凝土浇筑过程中,由于骨料离析、漏振等原因有时会出现质量缺陷,从而造成挡土墙或底板等混凝土建筑物(或构筑物)局部渗水;在水工闸门埋件如主轨、反轨及底槛安装过程中,也常由于混凝土浇筑困难造成混凝土不密实,致使埋件与新浇二期混凝土之间局部出现空洞。采取的补救措施也很多,或拆除重新浇筑;或先进行凿槽、冲洗处理,然后以高标号砂浆或混凝土修补。前者造成费用大,而且往往由于缺陷范围小,不影响安全使用;后者则会影响建筑物外观质量,而且由于混凝土凝固需要一定时间且本身存在干缩问题,
In the process of pouring concrete for water conservancy projects, quality defects sometimes occur due to segregation of the aggregate, leakage of vibration, etc., resulting in partial seepage of concrete structures (or structures) such as retaining walls or floors; , The anti-track and the bottom of the sill of the installation process, often due to concrete pouring caused by the lack of concrete is not solid, resulting in embedded parts and pouring two new concrete between the local holes. Many remedial measures have been taken, either demolished and re-poured; or crooked, rinsed and then repaired with high grade mortar or concrete. The former cost a lot, and often due to the small defect, does not affect the safe use; the latter will affect the appearance of the building quality, but also because of the concrete solidification takes some time and shrinkage itself,