Measures to avoid cracks on the wall of the silo's slipform construction

With the continuous progress of reserved grain and grain deep processing, a large number of shallow round silos have begun to be constructed, so inShallow round warehouse slipformWhat are the specific measures to avoid cracks on the warehouse wall during the construction process? Let's elaborate on this content in a dependent manner below, hoping to solve your questions!

When the silo wall is constructed by sliding formwork, the silo wall appears to be cracked or horizontally cracked, which will affect the air tightness of the silo, and this kind of cracking is inside and outside the barrel, so certain measures must be taken to control it. , This can prevent the silo wall from cracking.

1,When the formwork is designed and installed, the taper of 0.2%~0.5% must be set in accordance with the specifications, so that the upper mouth of the formwork is small and the lower mouth is large, so as to reduce the friction resistance of the concrete from the mold and prevent it from appearing during the construction process. The inverted cone situation causes the silo wall to crack.

2,When the mucosa is severe, the frictional resistance will increase and it will easily cause the silo wall to crack. When the mucosa appears, tools such as wooden sticks and rubber paddles should be used to beat the outside of the template to make the mortar stuck to the inner wall of the template fall off, keep the template clean and reduce friction. resistance.

3.When correcting deviation, the platform tilts too large, which is also a key factor that causes the silo wall to crack. Therefore, the deviation should not be corrected too quickly, and the deviation should be corrected slowly.

4.Excessively high concrete mold strength is also one of the main reasons that cause the silo wall to crack. Therefore, when the outdoor temperature is high, in addition to speeding up the sliding speed, it is also necessary to add fly ash to the concrete and a high-efficiency retarding type reducer. Aqueous agent may use low hydration heat cement, and use ice water to mix concrete and other measures to reduce the concrete entering temperature and strictly control the concrete exit temperature.

5.Slipform construction should try to choose to open the sliding in the lower temperature season, so that the influence of the ambient temperature on the sliding form can be reduced. Because the temperature of the raw materials is lower when the temperature is lower, the mold-in temperature of the concrete mixture is correspondingly lowered. In addition, during the construction of slipforms in the hot summer, methods such as shading or watering should be used to cool the formwork to reduce the temperature of the formwork, so that the concrete will not be too strong when it is ejected. The excessive friction will cause the concrete to crack when the form is lifted. .

6.Slip form is a process with very strict construction organization. Any problem in any link may cause the concrete to stay in the form for too long, resulting in excessive mold strength. Therefore, the construction must be tightly organized to ensure the organic combination of people, materials and machines. , That is, to ensure the vigorous energy of the construction personnel, the supply and demand of materials to meet the needs of the sliding form, and to ensure the mechanical integrity rate, can the normal sliding of the sliding form continue to appear the phenomenon of cracks and horizontal cracks.

More aboutShallow round warehouse slipformKnowledge, you can pay more attention to Anhui Xingcheng Slipform Construction Co., Ltd.!