Honeycomb prevention and control

Carefully design, strictly control the concrete mix ratio, often check to achieve accurate measurement.

The concrete is mixed evenly and suitable (bulk concrete slump 12~18, basement height 18 to 22, floor concrete 16~20).

The height of concrete pouring material more than 2m shall be filled with serial cylinder or chutes and should be layered and compacted (each pouring height shall not exceed 600mm) to prevent vibration leakage.

The formwork shall be tightly blocked, and the shear wall and pillar wall root shall be used with cement mortar to block the formwork joint in advance, strengthen the sealing measures, and the upper concrete shall be poured after the lower pouring interval 1~1.5h is sunk, so as to avoid the "rotten neck".

Hemp prevention and control

The formwork surface should be cleaned up, and do not stick to dry and hard cement mortar and other sundries.Before pouring the concrete, the formwork joints shall be fully watered and wet.

The formwork gap shall be strictly blocked with packing tape paper or putty, etc. The formwork isolation agent shall be selected with long-term uniform brush, and shall not be missed.

Concrete is evenly compacted and beat the outside of the formwork with a mallet to make the bubbles discharged.

Kong hole prevention and control

Concrete is evenly compacted and beat the outside of the formwork with a mallet to make the bubbles discharged.Sand mixed with clay blocks, formwork tools and other sundries fell into the concrete, should be removed in time.

Control of surface elevation of concrete slab

Pull the line leveling when receiving the concrete surface.

Control the final concrete dosage, more retreat and less fill, and remove the excess concrete in time.