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输水河戗台混凝土板勾缝开裂,容易造成戗台被冲刷掏空,进而造成输水河面板局部沉陷及坡面冲刷,影响堤岸的安全和输水。 在戗台混凝土板勾缝开裂原因分析上,一般认为有以下一些原因造成的:(1)基础夯实不密实,干容重达不到要求,造成基础沉陷,面板在自重作用下沟分开裂;(2)施工时板侧清洗不干净,使砂浆与混凝土板不能很好的粘接;(3)水灰比过大或过小;(4)养护时间不够;(5)扎缝密实度不够等。上述原因都容易造成戗台混凝土板勾缝开裂,但是设计
Water river taiwan concrete slab cracking, easily lead to taiwan was washed hollowing, and then cause water river panel partial settlement and slope erosion, affecting the safety of the bank and water. It is generally believed that the following reasons are caused by the following reasons: (1) The compaction of the foundation is not compacted and the dry weight can not reach the requirements, resulting in the foundation subsidence; 2) the construction side of the board cleaning is not clean, so that the mortar and concrete panels can not be well bonded; (3) water-cement ratio is too large or too small; (4) curing time is not enough; . The above reasons are likely to cause taiwan concrete plate cracking, but the design