土建工程中混凝土板件裂缝的成因分析

The analysis to the reason of crack on concrete slab in the soil construct engineering

混凝土的收缩、温度导致裂缝、变形引起的伸缩、支座处负筋下陷、浇板浇捣后的早期养护不调、板面负筋的保护层厚度偏厚、砂的粒径控制不严、砂粒过细、及含泥量较大、平面、立面转角形成应力等方面是引起土建工程中现浇板裂缝的主要原因,针对成因,加强防治,可减少有害的施工裂缝。

The concrete＇s constringency, temperature causes the crack, stretch and shrink cause by transform, sand path control not strick,sand grain over thin , and containing mpree measuring, etc is the main reason for for crack. Aim at the reason, and enhance the prevention and cure, can reduce the harmful construction crack.