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新型井管离心成型是利用高速旋转的管体模具内壁带动混凝土混合料运动,在离心力、重力、振动力、粘着力与摩擦力共同作用下,使混凝土混合料沿管体模具内壁分布、密实,并将多余水分挤出,制得高密实、高强度的井管。由于混凝土中各固相粒子密度不同,在离心力作用下其沉降速度各不相同,另外还由于离心过程中产生的冲击振动作用,容易造成混凝土内外分层现象,在离心过程中,只有合理地选择混凝土配合比、离心成型转速等,才能最大限度地发挥有利因素,限制不利因素,更好地控制离心混凝土井管的质量。
Centrifugal molding of the new well tubular is driven by the inner wall of the pipe mold rotating at a high speed to move the concrete mixture. Under the combined action of centrifugal force, gravity force, vibration force, adhesion force and friction force, the concrete mixture distributes along the inner wall of the pipe mold, And the excess water squeezed out to produce high density, high strength well tube. Due to the different density of solid particles in concrete, the sedimentation velocity varies with the centrifugal force. In addition, due to the shock and vibration generated during centrifugation, it is easy to cause the delamination inside and outside the concrete. In the process of centrifugation, only reasonable choice Concrete mix, centrifugal molding speed, etc., in order to maximize the use of favorable factors to limit unfavorable factors, better control of centrifugal concrete well tube quality.